Health Effects of Tobacco at the Global, Regional, and National Levels: Results From the 2019 Global Burden of Disease Study

Prevalence and characteristics of tobacco use among adults in Kazakhstan: A cross-sectional National Survey

Background

Smoking remains a major public health concern worldwide, contributing significantly to morbidity and mortality. Despite the implementation of tobacco control measures, smoking prevalence in Kazakhstan remains high. This study aims to assess the prevalence, demographic characteristics, and regional variations in smoking habits among adults in Kazakhstan.

Methods

A cross-sectional national survey was conducted from October 2021 to May 2022, covering all 17 regions of Kazakhstan. A total of 6720 adults aged 18-69 years participated, selected using a weighted multistage cluster sampling method. Data were collected through structured interviews based on the WHO STEPwise approach. Smoking status, tobacco consumption patterns, and smoking cessation attempts were analyzed. The results were reported as means with 95 % confidence intervals (CI).

Findings

The overall smoking prevalence was 19.1 %. Smoking was significantly more common among men (30.3 %) than women (7.9 %). The highest smoking prevalence was observed in the 30-44 age group (44.2 %) and among private-sector employees (53.2 %). Regional differences were notable, with the lowest smoking prevalence in Atyrau (9.2 %) and the highest in Pavlodar (30.4 %). Among current smokers, 89.1 % smoked daily, with an average of 11.8 cigarettes per day (95 % CI: 11.4-12.2). Only 36.7 % of smokers who visited healthcare professionals in the past year received advice to quit. Additionally, 42.8 % attempted to quit smoking in the past 12 months. Passive smoking exposure was common, with 26.8 % of women and 22.3 % of men exposed at home, and 30.2 % of men and 14.4 % of women exposed at work. The prevalence of smokeless tobacco use was low (1 %).

Interpretation

Smoking remains prevalent among adults in Kazakhstan, with significant differences by gender, age, occupation, and region. The high prevalence of daily smoking and the low frequency of smoking cessation advice from healthcare professionals indicate the need for stronger tobacco control policies, targeted public health campaigns, and enhanced smoking cessation support programs. These findings provide a basis for future research and policy-making efforts aimed at reducing tobacco consumption and its associated health risks.

Efficacy of shared decision making in tobacco cessation among health facilities of Haryana, India - A double blinded, parallel group Randomized Controlled trial Protocol

Background

Shared decision-making (SDM) incorporates evidence, patient values, and preferences into medical decision-making. SDM and decision aids might promote health professional engagement and patient knowledge of tobacco cessation therapy, improving usage and results. The SDM facilitates talks that lead to better-informed judgements that align with patients' priorities, unlike individual decision-making. Thus, the study will attempt to identify the efficacy of shared decision making in tobacco dependence treatment.

Methods

1) Design: a two-arm parallel group randomized controlled trial (RCT) 2) Setting: Three selected government health centers of Haryana, India. 3) Participants: 596 tobacco users aged ≥18 visiting the outpatient department/Tobacco cessation centers (TCC) of selected health centers. 4) Intervention and Comparator: The intervention group will receive shared decision process for prescribing pharmacotherapy (Nicotine replacement therapy, Bupropion) using specially designed decision aid based on three-talk model for tobacco cessation, while the control group will get standard care. 5) Measurements: Primary outcomes include urinary cotinine analysis for evaluating 7-day point prevalence abstinence. Secondary outcomes include patient satisfaction questionnaire PSQ-18 score, cumulative days of tobacco abstinence, self-reported number of quit attempts, and the rate of withdrawal. The outcomes such as change in behavior status i.e. tobacco cessation will be compared between the intervention and the comparator groups. When comparing the two groups, differences between proportions will be assessed by chi-square test, differences between means with t-test. An intention to treat analysis will be done when comparing outcomes in both arms.

Discussion

SDM in tobacco cessation therapies in healthcare settings is understudied, thereby this study looks at comparable interventions in different settings to add to the evidence. This suggests that this study on SDM in tobacco cessation therapy, which includes healthcare professionals, aims to assist patients in making evidence- and value-based medical decisions.

Trial registration

This protocol has been registered under the registration number CTRI/2022/10/046793 with the Clinical Trials Registry in India.

Analysis of physicians' statements on electronic cigarettes in YouTube videos in Türkiye: a thematic content analysis

BACKGROUND

Electronic cigarettes (e-cigarettes) have become increasingly popular among both adults and young people seeking to quit smoking and have sparked significant debates regarding their health effects. The current study aims to analyze how physicians' opinions in Türkiye address public health risks by examining the most-watched electronic cigarette videos on YouTube.

METHODS

The 16 most-watched YouTube videos in Türkiye featuring physicians discussing e-cigarettes were analyzed using thematic content analysis. The videos were chosen from searches conducted between April 2024 and December 2024 with the keywords "electronic cigarette," "electronic cigarette use," "harm of e-cigarettes," "are e-cigarettes harmful," "e-cigarette benefits," "e-cigarette doctor" and "e-cigarette Physician." Videos over 1 min with physicians as primary speakers and at least 1,000 views were included. The verbal content of physicians' opinions in the videos was transcribed verbatim, and the analyzed videos were categorized into four main themes and eight sub-themes.

RESULTS

The analysis of the videos revealed that physicians emphasized the physical and psychological health risks of e-cigarettes, particularly their detrimental effects on the respiratory and cardiovascular systems. Nicotine addiction was highlighted as a persistent issue, with e-cigarettes perpetuating dependence rather than serving as a smoking cessation tool. Additionally, marketing strategies targeting younger demographics, such as flavored products and appealing advertisements, were identified as a significant factor in shaping misconceptions about the relative safety of e-cigarettes. While some physicians acknowledged a reduction in certain harmful substances compared to traditional cigarettes, the majority emphasized the long-term health effects of e-cigarettes and warned against assuming these products are less harmful.

CONCLUSION

The findings reveal that physicians on YouTube predominantly adopt a cautious approach toward e-cigarettes, emphasizing their health risks and potential to perpetuate nicotine addiction. Marketing strategies targeting younger audiences were identified as a significant factor influencing public perceptions. These insights highlight the importance of health professionals engaging on digital platforms to address misconceptions and promote accurate, evidence-based information about e-cigarettes.

Predictors of cigarette smoking and physical inactivity among teachers during the SARS-CoV-2 pandemic in Germany: a cross-sectional analysis of a nationwide online survey

Background

The SARS-CoV-2 pandemic significantly impacted professional and private lives, which influenced social and health-related behavior. Schools in particular were greatly affected as restrictions made teaching more challenging, leading to new stresses and additional workloads. Prior to the pandemic, teachers were already facing many physical and psychological stressors that were exacerbated by the pandemic. This may have resulted in a deterioration in the teachers' health behaviors. Therefore, the aim of this study was to examine the prevalence of cigarette smoking and physical activity among German teachers during the SARS-CoV-2 pandemic, to assess possible changes considering cigarette smoking and physical activity habits during the pandemic compared to the pre-pandemic period, and to identify predictors of teachers' cigarette smoking and physical inactivity during the pandemic.

Methods

In March 2021, a nationwide online survey was conducted among teachers in Germany. A total of 31,089 participants entered the analysis. Data on cigarette smoking and physical activity as well as sociodemographic, workplace-related, psychological, SARS-CoV-2-related, and health-related items were collected using established instruments and, if necessary, self-developed items. Two binary logistic regressions with stepwise inclusion of six different variable groups were performed to predict cigarette smoking and physical inactivity.

Results

Among all surveyed teachers, 13.9% reported smoking cigarettes, and 76.6% did not meet the physical activity recommendations. The regression analyses revealed 16 significant predictors of cigarette smoking and six significant predictors of physical inactivity.

Conclusions

The predictors revealed in the present study can help target interventions for teachers who are at higher risk for unhealthy behaviors during the SARS-CoV-2 pandemic and potential future pandemics. In particular, the alarming finding that more than three-quarters of teachers were physically inactive during the pandemic should place special emphasis on improving physical activity.

Estimating the Direct Medical Costs of Smoking-Attributable Non-communicable Diseases in Northeastern Iran From 2015 to 2023

Introduction: Smoking remains a significant public health issue, leading to severe non-communicable diseases (NCDs) and a considerable economic burden, particularly in low- and middle-income countries. In Iran, smoking-attributable diseases account for substantial healthcare costs. This study aims to estimate the direct medical costs of smoking-attributable NCDs in hospitals affiliated with Mashhad University of Medical Sciences from 2015 to 2023. Methods: A descriptive-analytical study was conducted using a cross-sectional design, analyzing hospital records from 2015 to 2023. The study population included all patients aged 35 and older with smoking-attributable NCDs hospitalized during this period. The smoking-attributable fraction (SAF) was calculated using prevalence data for current and former smokers and relative risk estimates for various NCDs. Direct medical costs were extracted from the hospital information system and analyzed using Microsoft Excel 2019 and STATA 14 software. Results: The total direct medical costs of smoking-related NCDs averaged $10.5 million annually, with male patients accounting for 93.4% of these costs. Cardiovascular diseases were the largest cost driver, comprising 74.1% of the total expenses, followed by respiratory diseases (15.2%) and cancers (10.7%). The attributable risk for smoking-related diseases was consistently higher in men, particularly for lung cancer (76.9%) and chronic obstructive pulmonary disease (68.3%). Conclusion: Smoking imposes a significant financial burden on the healthcare system, particularly for male patients. Targeted tobacco control interventions, such as increased taxation and public awareness campaigns, are urgently needed to reduce smoking prevalence and mitigate its economic impact on healthcare systems. Comprehensive policies could alleviate the strain on Iran's healthcare system and improve public health outcomes.

Association of tobacco use with depressive symptoms in adults: Considerations of symptom severity, symptom clusters, and sex

OBJECTIVE

We aim to assess the association between depressive symptoms, depressive symptom severity and symptom clusters with tobacco use. We will also evaluate sex differences in these associations.

METHOD

This cross-sectional study used data from the National Health and Nutrition Examination Survey (2005-2018). Depressive symptoms were assessed using the Patient Health Questionnaire-9. Tobacco use was categorized into four groups: cigarette use, smoked tobacco products (pipes and cigars), smokeless tobacco products (chewing tobacco and snuff), and non-tobacco use (reference group).

RESULTS

This study included 33,509 participants. Cigarette use was associated with a 0.83-unit increase in total PHQ-9 scores (95% CI =  [0.63, 1.04]), and 1.73 times higher odds of reporting depressive symptoms (95% CI =  [1.48, 2.02]) compared to non-tobacco use. However, the use of smoked and smokeless tobacco was not associated with depressive symptoms. In females, cigarette use showed a stronger association with total PHQ-9 scores (aCoef =  1.23, 95% CI =  [0.92, 1.55]) than in males (aCoef =  0.45, 95% CI =  [0.21, 0.69]). Additionally, female smoked tobacco users showed positive associations with both PHQ-9 scores and the presence of depressive symptoms, but this relationship was not observed in males. Furthermore, subgroup analysis revealed associations between cigarette use and cognitive-affective and somatic symptom clusters, as well as a relationship between the logarithm of total cigarette consumption and depressive symptoms.

CONCLUSION

Cigarette use was associated with higher odds of depressive symptoms with females having a stronger association. Further studies are needed to replicate these findings and examine the underlying mechanisms.

Prevalence of smoking among undergraduate students in the Kingdom of Saudi Arabia: A meta-analysis

INTRODUCTION

In recent years, tobacco smoking has become a major public health concern in the Kingdom of Saudi Arabia (KSA), particularly among adolescents and college students. Hence, the current study aimed to collect the available evidence of smoking prevalence in KSA over the past decade (2014-2023) among college students in KSA and to find its pooled prevalence.

METHODS

This meta-analysis obtained relevant studies from PubMed, published during the period April 2014 to June 2023. All articles published in English in study venues within the Kingdom of Saudi Arabia on smoking prevalence/ epidemiology/factors among undergraduate and/or college-going students were included. Systematic review and review articles were excluded. MedCalc was used to calculate the pooled prevalence (95% CI).

RESULTS

Among the 258 initial pool of articles, 34 fulfilled the eligibility criteria. Further screening revealed only 34 articles met the inclusion criteria for this meta-analysis. These studies' minimum and maximum sample sizes were 208 and 3322, respectively. The lowest prevalence was 7.9%, and the highest was 59.57%. Hence, using the random effect model, the pooled prevalence of this study was 24.5% (95% CI: 21.013-28.09).

CONCLUSIONS

The pooled prevalence of smoking is found to be 24.5%. Periodical educational seminars and related content must be arranged for college/university students to minimize the prevalence; hence, by reducing the smoking prevalence, morbidity and mortality can be minimized.

Global disease burden analysis of Cardiometabolic disease attributable to second-hand smoke exposure from 1990 to 2040

Objective

Secondhand smoke (SHS) is a strong but comparatively controllable cardiometabolic risk factor. This study aims to assess the present and future burden of cardiometabolic diseases (CMDs) from SHS exposure.

Methods

Using the Global Burden of Disease (GBD) framework, we examined mortality and disability-adjusted life year (DALY) from CMDs attributable to SHS, by age, sex, and year, including cardiovascular disease [CVD, ischemic heart disease (IHD) and/or stroke], and/or Type 2 Diabetes Mellitus (T2DM) from 1990 to 2019. The predicted death number and age-standardized mortality rate (ASMR) from 2020 to 2040 were estimated by the Bayesian age-period cohort (BAPC) model.

Results

SHS exposure declined until 2016 but stabilized or increased thereafter. From 1990 to 2019, CMD-related deaths and DALYs due to SHS are continuously increasing, particularly in low-middle and middle Sociodemographic Index (SDI) regions. In 2019, a significant proportion of CMD-related deaths and DALYs among females under 65 were attributed to SHS exposure. In females aged 25-29, SHS contributed to 16.12 % and 13.30 % of IHD and T2DM deaths, respectively. Surprisingly, forecasts show that annual deaths from IHD, stroke, and T2DM related to SHS exposure are anticipated to rise over the next 20 years.

Conclusions

SHS exposure has stopped declining in recent years. CMD-related deaths from controlled SHS have increased and are predicted to rise substantially over the next 20 years. Reducing SHS exposure could have major benefits for cardiometabolic health worldwide, especially for women under 65 years in less developed regions.

Brain-wide pleiotropy investigation of alcohol drinking and tobacco smoking behaviors

To investigate the pleiotropic mechanisms linking brain structure and function to alcohol drinking and tobacco smoking, we integrated genome-wide data generated by the GWAS and Sequencing Consortium of Alcohol and Nicotine use (GSCAN; up to 805,431 participants) with information related to 3935 brain imaging-derived phenotypes (IDPs) available from UK Biobank (N = 33,224). We observed global genetic correlation of smoking behaviors with white matter hyperintensities, the morphology of the superior longitudinal fasciculus, and the mean thickness of pole-occipital. With respect to the latter brain IDP, we identified a local genetic correlation with age at which the individual began smoking regularly (hg38 chr2:35,895,678-36,640,246: rho = 1, p = 1.01 × 10-5). This region has been previously associated with smoking initiation, educational attainment, chronotype, and cortical thickness. Our genetically informed causal inference analysis using both latent causal variable approach and Mendelian randomization linked the activity of prefrontal and premotor cortex and that of superior and inferior precentral sulci, and cingulate sulci to the number of alcoholic drinks per week (genetic causality proportion, gcp = 0.38, p = 8.9 × 10-4, rho = -0.18 ± 0.07; inverse variance weighting, IVW beta = -0.04, 95%CI = -0.07--0.01). This relationship could be related to the role of these brain regions in the modulation of reward-seeking motivation and the processing of social cues. Overall, our brain-wide investigation highlighted that different pleiotropic mechanisms likely contribute to the relationship of brain structure and function with alcohol drinking and tobacco smoking, suggesting decision-making activities and chemosensory processing as modulators of propensity towards alcohol and tobacco consumption.

Age is associated with altered locomotor and hypothermic response to acute nicotine

Cigarette smoking is at an all-time low. However, nicotine consumption has diversified with the introduction of commercial tobacco products that include Electronic Nicotine Delivery Systems. Nicotine is the main psychoactive component of tobacco and contributes to the addictive properties of tobacco products. Prolonged nicotine exposure induces neural adaptations that promote addiction-related behaviors in an age-dependent manner. Here, we investigated nicotine sensitivity among young adult and middle-aged male mice by comparing initial responses to nicotine tartrate from different suppliers. We observed that all nicotine compounds tested in the present study induced a robust reduction in locomotor activity and body temperature, and nicotine exposure resulted in increased serum cotinine concentration. We observed age-related differences in the magnitude and the time course of nicotine responses for locomotor and hypothermic effects. Reduction in locomotor activity was larger among young adult mice, but the time course of this response was similar for both age groups. Nicotine-induced reduction in body temperature was of a comparable magnitude for both age groups but young adults showed a faster decrease than middle-aged mice. These results suggest that age of exposure is a key factor contributing to nicotine sensitivity and its potential addictive effects. These responses were consistently produced for nicotine tartrate from different sources. Our findings reveal distinct responses between young adults and middle-aged mice, suggesting that age-specific neurobiological mechanisms in nicotine sensitivity continue developing into adulthood. These age-related variations in nicotine response are crucial for developing targeted interventions and understanding the risk factors for nicotine dependence across the lifespan.

Trends and Association between Smoking and the Socio-Demographic Index Among 11 South American Countries, 1990-2019

OBJECTIVES

To examine prevalence trends in the use of smoked tobacco products in 11 South American (SA) countries (i.e., Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Paraguay, Peru, Suriname, Uruguay, and Venezuela) and their association with country-specific socio-demographic index (SDI) over 30 years.

DATA AND METHODS

The estimates of SDI and smoked tobacco prevalence stratified by age, sex, and country were extracted from the Global Burden of Disease Study (1990-2019) on individuals aged 15+. The annual percentage changes (APCs) of trends in country-specific prevalence of smoked tobacco were evaluated using Joinpoint regression. Correlation analysis was also used to explore the association between country-specific prevalence of smoked tobacco and their SDIs, a measure of developmental status considering income per capita, educational attainment, and total fertility rate.

RESULTS

While all SA countries showed an overall decline in smoked tobacco use prevalence between 1990 and 2019 (APCs between -0.52%-and -4.73%; p < 0.05), Bolivia and Ecuador showed a significant increasing trend (APCs of 0.34% and 0.20%). Country-specific SDI was strongly and significantly correlated (rs = -0.99 to -0.85) with smoking prevalence in SA countries, except for Ecuador and Bolivia (rs = 0.16 and 0.36, respectively).

CONCLUSION

In recent decades, most SA countries have experienced a significant reduction in the prevalence of smoked tobacco use, except Ecuador and Bolivia, where smoking rates have risen, showing a direct correlation with SDI. These findings can contribute to the design and implementation of strategies and policies for tobacco prevention and control in the SA region especially within the two affected countries - Ecuador and Bolivia.

Sociodemographic index-age differences in the global prevalence of cardiovascular diseases, 1990-2019: a population-based study

BACKGROUND

This study aims to assess the global burden and trends in cardiovascular diseases (CVDs) prevalence, stratified by sociodemographic index (SDI) categories and age groups, across 204 countries and territories.

METHODS

Utilizing data from the Global Burden of Disease Study 2019, this study analyzed trends in the age-standardized prevalence rate of overall and type-specific CVDs, including rheumatic heart disease, ischemic heart disease, stroke, hypertensive heart disease, non-rheumatic valvular heart disease, cardiomyopathy and myocarditis, atrial fibrillation and flutter, peripheral artery disease, endocarditis, and other cardiovascular and circulatory diseases. Age-standardized prevalence rates were stratified by SDI categories (low, low-middle, middle, high-middle, and high) and age groups (0-14, 15-49, 50-69, and ≥ 70 years). The corresponding average annual percentage change was calculated to assess temporal trends.

RESULTS

From 1990 to 2019, the global age-standardized prevalence rate per 100,000 population for CVD decreased from 6728.04 (95% UI 6394.55 to 7059.66) to 6431.57 (95% UI 6109.95 to 6759.8), with an average annual percent change of -0.15% (95% CI -0.17 to -0.13). When stratified by SDI category, the age-standardized prevalence rate of CVD decreased significantly in high-middle and high SDI countries but increased in middle, low-middle, and low SDI countries. By age group, the age-standardized prevalence rate of CVD declined in the 50-69 and ≥ 70 years groups but increased in the 0-14 and 15-49 years groups. SDI levels were negatively associated with faster increases in the age-standardized prevalence rate of CVD across all ages and age groups. Low SDI countries consistently showed the highest age-standardized prevalence rates of CVD in the younger age groups (0-14 and 15-49 years), while high-middle SDI countries had the highest rates in the older age groups (50-69 and ≥ 70 years). The age-standardized prevalence rate of CVD was negatively associated with SDI levels in the 0-14 and 15-49 years groups and positively associated with SDI levels in the 50-69 and ≥ 70 years groups. Type-specific CVDs such as rheumatic heart disease, other cardiovascular and circulatory diseases, non-rheumatic valvular heart disease, and hypertensive heart disease showed increased age-standardized prevalence rates from 1990 to 2019.

CONCLUSIONS

This study highlights significant disparities in CVD prevalence across sociodemographic and age groups. While the global prevalence of CVD has generally decreased, the rise in CVD prevalence in lower SDI countries and younger populations calls for tailored intervention strategies. Addressing these disparities is crucial to mitigating the growing burden of CVD and promoting cardiovascular health on a global scale.

Behavioral modification strategies for tobacco cessation: A scoping review

Tobacco use remains a global public health challenge, with numerous associated health risks. Behavioral modification strategies have played a pivotal role in helping individuals achieve and maintain tobacco cessation. This scoping review aims to compare different behavioral modifications for tobacco cessation counseling. A literature search was performed in PubMed Central, Embase, Google Scholar, and Cochrane Library up to 2023 to identify appropriate studies. Full text of original research articles, in vivo studies, randomized control trials, and observational studies were only included in the study. Eighteen articles fulfilled the inclusion criteria and articles were available through the electronic database. Tobacco cessation counseling depends heavily on behavioral modification, which provides individuals with an organized and evidence-based approach to quitting smoking. Various behavior change theories and models, such as the Transtheoretical Model, Social Cognition Model, and Theory of Planned Behavior, have been used to help people effectively stop smoking. Most studies used the Transtheoretical model for tobacco cessation since it assisted in quitting both smoking and smokeless tobacco users and can be beneficial in persuading individuals to quit tobacco usage. This scoping review reveals that Behavioral modification strategies have demonstrated their efficacy in facilitating tobacco cessation, providing valuable insights into the diverse approaches available to support individuals in quitting tobacco use.

Electronic cigarettes and subsequent use of cigarettes in young people: An evidence and gap map

BACKGROUND AND AIMS

The use of e-cigarettes may influence later smoking uptake in young people. Evidence and gap maps (EGMs) are interactive on-line tools that display the evidence and gaps in a specific area of policy or research. The aim of this study was to map clusters and gaps in evidence exploring the relationship between e-cigarette use or availability and subsequent combustible tobacco use in people aged < 30 years.

METHODS

We conducted an EGM of primary studies and systematic reviews. A framework and an interactive EGM was developed in consultation with an expert advisory group. A systematic search of five databases retrieved 9057 records, from which 134 studies were included. Systematic reviews were appraised using AMSTAR-2, and all included studies were coded into the EGM framework resulting in the interactive web-based EGM. A descriptive analysis of key characteristics of the identified evidence clusters and gaps resulted in this report.

RESULTS

Studies were completed between 2015 and 2023, with the first systematic reviews being published in 2017. Most studies were conducted in western high-income countries, predominantly the United States. Cohort studies were the most frequently used study design. The evidence is clustered on e-cigarette use as an exposure, with an absolute gap identified for evidence looking into the availability of e-cigarettes and subsequent cessation of cigarette smoking. We also found little evidence analysing equity factors, and little exploring characteristics of e-cigarette devices.

CONCLUSIONS

This evidence and gap map (EGM) offers a tool to explore the available evidence regarding the e-cigarette use/availability and later cigarette smoking in people under the age of 30 years at the time of the search. The majority of the 134 reports is from high-income countries, with an uneven geographic distribution. Most of the systematic reviews are of lower quality, suggesting the need for higher-quality reviews. The evidence is clustered around e-cigarette use as an exposure and subsequent frequency/intensity of current combustible tobacco use. Gaps in evidence focusing on e-cigarette availability, as well as on the influence of equity factors may warrant further research. This EGM can support funders and researchers in identifying future research priorities, while guiding practitioners and policymakers to the current evidence base.

Health, economic and social burden of tobacco in Latin America and the expected gains of fully implementing taxes, plain packaging, advertising bans and smoke-free environments control measures: a modelling study

OBJECTIVE

To investigate the tobacco-attributable burden on disease, medical costs, productivity losses and informal caregiving; and to estimate the health and economic gains that can be achieved if the main tobacco control measures (raising taxes on tobacco, plain packaging, advertising bans and smoke-free environments) are fully implemented in eight countries that encompass 80% of the Latin American population.

DESIGN

Markov probabilistic microsimulation economic model of the natural history, costs and quality of life associated with the main tobacco-related diseases. Model inputs and data on labour productivity, informal caregivers' burden and interventions' effectiveness were obtained through literature review, surveys, civil registrations, vital statistics and hospital databases. Epidemiological and economic data from January to October 2020 were used to populate the model.

FINDINGS

In these eight countries, smoking is responsible each year for 351 000 deaths, 2.25 million disease events, 12.2 million healthy years of life lost, US$22.8 billion in direct medical costs, US$16.2 billion in lost productivity and US$10.8 billion in caregiver costs. These economic losses represent 1.4% of countries' aggregated gross domestic products. The full implementation and enforcement of the four strategies: taxes, plain packaging, advertising bans and smoke-free environments would avert 271 000, 78 000, 71 000 and 39 000 deaths, respectively, in the next 10 years, and result in US$63.8, US$12.3, US$11.4 and US$5.7 billions in economic gains, respectively, on top of the benefits being achieved today by the current level of implementation of these measures.

CONCLUSIONS

Smoking represents a substantial burden in Latin America. The full implementation of tobacco control measures could successfully avert deaths and disability, reduce healthcare spending and caregiver and productivity losses, likely resulting in large net economic benefits.

Cigarette Smoking and its Association with Primary Open Angle Glaucoma: A Systematic Review and Meta-Analysis

PURPOSE

To systematically assess the association between cigarette smoking and development of Primary Open Angle Glaucoma (POAG) in the general adult population. Heterogeneity will be explored appropriately.

METHODS

Outcomes of glaucoma, OAG and POAG were explored in adults who were current, former, and never cigarette smokers. An additional category of 'smokers with "any" smoking status' was used where former smokers were not clearly distinguished from current and never smokers and in smokers whose form of smoking was not defined. All studies were observational and there was no limit to time period. Databases used were MEDLINE, Embase, Global Health and Web of Science. Study quality was assessed using the JBI critical appraisal tool. The DerSimonian-Laird random-effects model and weighting method was applied for meta-analysis with subgroup and sensitivity analyses along with meta-regression.

RESULTS

Four cohort, six cross-sectional and nine case-control studies were included. Only one cohort study attained a low risk of bias (RoB), two cohort studies were of medium RoB and the rest of the studies were of high RoB. There was no evidence for an association between smoking statuses: current smoking: OR 0.96, 95%CI (0.76,1.21), former smoking: OR 0.96, 95%CI (0.83,1.11), smoking (any): OR 1.48, 95%CI (0.96, 2.29) and glaucoma. Sensitivity analyses did not have a material impact on findings. Heterogeneity was not explained by smoking status, study quality, smoking exposure, and glaucoma outcome criteria.

CONCLUSION

This review suggests no evidence for an association between cigarette smoking and the development of POAG. There was no evidence that current, former, and general smoking increased the risk of glaucoma.

Integration of a Tobacco Cessation Program into a Rural Community-Based Maternal and Child Health Program in India: A Stakeholders' Perspective on Task Shifting

INTRODUCTION

According to the Global Adult Tobacco Survey-2, India, 7.5% of pregnant women are tobacco users with a high prevalence of smokeless tobacco use in rural India. Although pregnant women may receive advice to quit tobacco, lack of knowledge on providing cessation support among healthcare workers results in missed opportunities. Community Health Workers (CHWs) play a significant role in maternal and child health (MCH) programs. Thus, task-shifting for providing cessation support by CHWs was planned and the perceptions and attitudes of concerned stakeholders were explored.

AIMS AND METHODS

A pre-implementation qualitative study was conducted in four states of India within existing rural, community-based MCH program settings. Implementation research frameworks were used to develop data collection tools and for inductive and deductive thematic analysis. In-depth interviews were conducted with stakeholders (n = 28) like coordinators, pregnant women, and village functionaries of the government health system. Four focus groups were conducted with female CHWs (n = 24).

RESULTS

Stakeholders intended to adopt the intervention as objectives of the cessation intervention were aligned with the aims of the MCH program. CHWs related to their role in task-shifting and understood the context for implementing the intervention within the MCH program. Pregnant women expressed openness to receiving cessation support from CHWs acting as a facilitator for task-shifting. Barriers anticipated were the additional workload and time required for CHWs to implement the intervention.

CONCLUSIONS

Task-shifting to female CHWs for screening tobacco users, providing brief advice and cessation support within the MCH program was perceived to be acceptable, adoptable, and feasible.

IMPLICATIONS

The study builds insight into the process of developing a grounded approach for the integration of tobacco cessation intervention into a rural, community-based antenatal care setting by task shifting to female CHWs for providing cessation support to pregnant women. The study fills gaps in the literature related to establishing tobacco cessation interventions for pregnant women. The delineated efforts in integration of the intervention and task shifting can be replicated in other developing countries, especially in rural communities within South Asian and Southeast Asian regions having cultural practices, community-based healthcare structures, and tobacco consumption patterns that are comparable to India.

Nicotine Impairs Smooth Muscle cAMP Signaling and Vascular Reactivity

OBJECTIVE

This study aimed to determine nicotine's impact on receptor-mediated cyclic adenosine monophosphate (cAMP) synthesis in vascular smooth muscle (VSM). We hypothesize that nicotine impairs β adrenergic-mediated cAMP signaling in VSM, leading to altered vascular reactivity.

METHODS

The effects of nicotine on cAMP signaling and vascular function were systematically tested in aortic VSM cells and acutely isolated aortas from mice expressing the cAMP sensor TEpacVV (Camper), specifically in VSM (e.g., CamperSM).

RESULTS

Isoproterenol (ISO)-induced β-adrenergic production of cAMP in VSM was significantly reduced in cells from second-hand smoke (SHS)-exposed mice and cultured wild-type VSM treated with nicotine. The decrease in cAMP synthesis caused by nicotine was verified in freshly isolated arteries from a mouse that had cAMP sensor expression in VSM (e.g., CamperSM mouse). Functionally, the changes in cAMP signaling in response to nicotine hindered ISO-induced vasodilation, but this was reversed by immediate PDE3 inhibition.

CONCLUSIONS

These results imply that nicotine alters VSM β adrenergic-mediated cAMP signaling and vasodilation, which may contribute to the dysregulation of vascular reactivity and the development of vascular complications for nicotine-containing product users.

Effect of smoking on prostate cancer: Results from the National Health and Nutrition Examination Survey 2003-2018 and Mendelian randomization analyses

INTRODUCTION

The controversial relationship between smoking and prostate cancer (PCa) risk prompted us to conduct a cross-sectional study using the National Health and Nutrition Examination Survey (NHANES) database and apply Mendelian randomization (MR) analyses in order to clarify the possible causal effect of smoking on PCa risk.

METHODS

Using univariate and multivariate logistic regression methods, a secondary analysis of the pooled 2003-2018 NHANES dataset was performed to explore the association between smoking and PCa risk. Propensity-score matching was used to reduce selection bias. Then, we conducted subsequent MR analysis study to investigate the potential causal effect of smoking on PCa risk, with genetic variants of four exposure factors including the lifetime smoking index, light smoking, smoking initiation, and the amount of smoking per day obtained from genome-wide association studies, and PCa summary statistics obtained from three database populations. Inverse-variance weighting was the primary analytical method, and weighted median and MR-Egger regression were used for sensitivity analyses. The MR results for the three PCa databases were combined using meta-analysis.

RESULTS

The study included 16073 NHANES subjects, comprising 554 with PCa and 15519 without PCa. Logistic regression before and after matching did not reveal any significant association. Meta-analysis of the MR results also did not support an association of PCa risk with lifetime smoking index (OR=0.95; 95% CI: 0.83-1.09), light smoking (OR=1.00; 95% CI: 0.95-1.06), smoking initiation (OR=0.99, 95% CI=0.99-1.00), or the amount of smoking per day (OR=1.00; 95% CI: 0.99-1.00) and PCa risk.

CONCLUSIONS

There was no evidence for an association between smoking and the risk of PCa. Further studies are needed to determine if there are any associations of other forms of smoking with the risk of PCa at different stages.

Chronic nicotine exposure is associated with electrophysiological and sympathetic remodeling in the intact rabbit heart

Nicotine is the primary addictive component of tobacco products. Through its actions on the heart and autonomic nervous system, nicotine exposure is associated with electrophysiological changes and increased arrhythmia susceptibility. To assess the underlying mechanisms, we treated rabbits with transdermal nicotine (NIC, 21 mg/day) or control (CT) patches for 28 days before performing dual optical mapping of transmembrane potential (RH237) and intracellular Ca2+ (Rhod-2 AM) in isolated hearts with intact sympathetic innervation. Sympathetic nerve stimulation (SNS) was performed at the first to third thoracic vertebrae, and β-adrenergic responsiveness was additionally evaluated following norepinephrine (NE) perfusion. Baseline ex vivo heart rate (HR) and SNS stimulation threshold were higher in NIC versus CT (P = 0.004 and P = 0.003, respectively). Action potential duration alternans emerged at longer pacing cycle lengths (PCL) in NIC versus CT at baseline (P = 0.002) and during SNS (P = 0.0003), with similar results obtained for Ca2+ transient alternans. SNS shortened the PCL at which alternans emerged in CT but not in NIC hearts. NIC-exposed hearts tended to have slower and reduced HR responses to NE perfusion, but ventricular responses to NE were comparable between groups. Although fibrosis was unaltered, NIC hearts had lower sympathetic nerve density (P = 0.03) but no difference in NE content versus CT. These results suggest both sympathetic hypoinnervation of the myocardium and regional differences in β-adrenergic responsiveness with NIC. This autonomic remodeling may contribute to the increased risk of arrhythmias associated with nicotine exposure, which may be further exacerbated with long-term use.NEW & NOTEWORTHY Here, we show that chronic nicotine exposure was associated with increased heart rate, increased susceptibility to alternans, and reduced sympathetic electrophysiological responses in the intact rabbit heart. We suggest that this was due to sympathetic hypoinnervation of the myocardium and diminished β-adrenergic responsiveness of the sinoatrial node following nicotine treatment. Though these differences did not result in increased arrhythmia propensity in our study, we hypothesize that prolonged nicotine exposure may exacerbate this proarrhythmic remodeling.

Smokeless Tobacco Harbors Bacteria Involved in Biofilm Formation as Well as Salt and Heavy Metal Tolerance Activity

In our previous culture-independent study on smokeless tobacco products, we have observed a strong positive correlation between several bacteria and genes involved in nitrate/nitrite reduction, biofilm formation, and pro-inflammation. Therefore, the present investigation was carried out to analyze the inhabitant bacterial population of the Indian ST products for assessing the health-associated risk attributes using culture-dependent approach. Traditional cultivation approaches recovered several bacterial isolates from commercial ST products on different culture media. A high colony formation unit (CFU) count was observed that ranged from 173 × 104 to 630.4 × 105 per gram of ST products. Of the 74 randomly selected and distinct bacterial isolates, 17 isolates showed a significantly enhanced growth (p-value < 0.05) in the presence of the aqueous tobacco extract. On biochemical characterization, these bacteria were identified as the member of Bacillus, Enterobacter, Micrococcus, Providencia, Serratia, Pantoea, Proteus, and Pseudomonas. Most of these bacteria also exhibited biofilm-forming activity, where eight bacterial isolates were identified for strong biofilm-forming action. 16S rRNA-based molecular characterization of these bacteria identified them as Bacillus subtilis, Bacillus paralicheniformis, Enterobacter sp., Serratia marcescens, Pantoea anthophila, and Enterobacter cloacae. Moreover, these bacteria also exhibited the potential to withstand high salt and heavy metal concentrations. The findings demonstrate that Indian ST products are heavily populated with wide bacterial species exhibiting potential in biofilm formation, heavy metal resistance, and salt tolerance.

Brain-wide pleiotropy investigation of alcohol drinking and tobacco smoking behaviors

To investigate the pleiotropic mechanisms linking brain structure and function to alcohol drinking and tobacco smoking, we integrated genome-wide data generated by the GWAS and Sequencing Consortium of Alcohol and Nicotine use (GSCAN; up to 805,431 participants) with information related to 3,935 brain imaging-derived phenotypes (IDPs) available from UK Biobank (N=33,224). We observed global genetic correlation of smoking behaviors with white matter hyperintensities, the morphology of the superior longitudinal fasciculus, and the mean thickness of pole-occipital. With respect to the latter brain IDP, we identified a local genetic correlation with age at which the individual began smoking regularly (hg38 chr2:35,895,678-36,640,246: rho=1, p=1.01×10 -5 ). This region has been previously associated with smoking initiation, educational attainment, chronotype, and cortical thickness. Our genetically informed causal inference analysis using both latent causal variable approach and Mendelian randomization linked the activity of prefrontal and premotor cortex and that of superior and inferior precentral sulci, and cingulate sulci to the number of alcoholic drinks per week (genetic causality proportion, gcp=0.38, p=8.9×10 -4 , rho=-0.18±0.07; inverse variance weighting, IVW beta=-0.04, 95%CI=-0.07 - -0.01). This relationship could be related to the role of these brain regions in the modulation of reward-seeking motivation and the processing of social cues. Overall, our brain-wide investigation highlighted that different pleiotropic mechanisms likely contribute to the relationship of brain structure and function with alcohol drinking and tobacco smoking, suggesting decision-making activities and chemosensory processing as modulators of propensity towards alcohol and tobacco consumption.

Food-Oral Processing: Current Progress, Future Directions, and Challenges

Oral processing refers to the series of physical, chemical, and biological processes inside the oral cavity when we consume food. This process affects the taste, quality, and nutrient absorption of the body. In the human diet, oral processing plays a crucial role because it impacts not only the food flavor and texture but also the absorption and utilization of nutrients. With the progress of science and technology and the increasing demand for food, the study of oral processing has become increasingly important. This paper reviews the history and definition of oral processing, its current state of research, and its applications in food science and technology, focusing on personalized taste customization, protein structure modification, food intake and nutrition, and bionic devices. It also analyzes the impact of oral processing on different types of food products and explores its potential in the food industry and science research.

Advancing progress on tobacco control in low-income and middle-income countries through economic analysis

BACKGROUND

More than 80% of the world's 1.3 billion tobacco users live in low-income and middle-income countries (LMICs), where progress to address tobacco and its harms has been slow. The perception that tobacco control detracts from economic priorities has impeded progress. The Secretariat of the WHO Framework Convention on Tobacco Control (FCTC) is leading the FCTC 2030 project, which includes technical assistance to LMICs to analyse the economic costs of tobacco use and the benefits of tobacco control.

METHODS

The Secretariat of the WHO FCTC, United Nations Development Programme and WHO supported 21 LMICs between 2017 and 2022 to complete national investment cases to guide country implementation of the WHO FCTC, with analytical support provided by RTI International. These country-level cases combine customised estimates of tobacco's economic impact with qualitative analysis of socio-political factors influencing tobacco control. This paper overviews the approach, observed tobacco control advancements and learnings from 21 countries: Armenia, Cabo Verde, Cambodia, Chad, Colombia, Costa Rica, El Salvador, Eswatini, Georgia, Ghana, Jordan, Laos, Madagascar, Myanmar, Nepal, Samoa, Sierra Leone, Sri Lanka, Suriname, Tunisia and Zambia.

RESULTS

Tobacco control advancements in line with investment case findings and recommendations have been observed in 17 of the 21 countries, and many have improved collaboration and policy coherence between health and economic stakeholders.

CONCLUSIONS

Tobacco control must be seen as more than a health concern. Tobacco control leads to economic benefits and contributes to sustainable development. National investment cases can support country ownership and leadership to advance tobacco control.

Interpreting results, impacts and implications from WHO FCTC tobacco control investment cases in 21 low-income and middle-income countries

BACKGROUND

Tobacco control investment cases analyse the health and socioeconomic costs of tobacco use and the benefits that can be achieved from implementing measures outlined in the WHO Framework Convention on Tobacco Control (WHO FCTC). They are intended to provide policy-makers and other stakeholders with country-level evidence that is relevant, useful and responsive to national priorities and policy context.

METHODS

This paper synthesises findings from investment cases conducted in Armenia, Cabo Verde, Cambodia, Chad, Colombia, Costa Rica, El Salvador, Eswatini, Georgia, Ghana, Jordan, Laos, Madagascar, Myanmar, Nepal, Samoa, Sierra Leone, Sri Lanka, Suriname, Tunisia and Zambia. We examine annual socioeconomic costs associated with tobacco use, focusing on smoking-related healthcare expenditures, the value of lives lost due to tobacco-related mortality and workplace productivity losses due to smoking. We explore potential benefits associated with WHO FCTC tobacco demand-reduction measures.

RESULTS

Tobacco use results in average annual socioeconomic losses of US$95 million, US$610 million and US$1.6 billion among the low-income (n=3), lower-middle-income (n=12) and upper-middle-income countries (n=6) included in this analysis, respectively. These losses are equal to 1.1%, 1.8% and 2.9% of average annual national gross domestic product, respectively. Implementation and enforcement of WHO FCTC tobacco demand-reduction measures would lead to reduced tobacco use, fewer tobacco-related deaths and reduced socioeconomic losses.

CONCLUSIONS

WHO FCTC tobacco control measures would provide a positive return on investment in every country analysed.

Contingency management for smoking cessation for individuals with overweight or obesity: A randomized controlled trial

BACKGROUND

Interventions for quitting smoking and weight control among individuals with excess weight are scarce. Our study evaluated the effectiveness of cognitive behavioral therapy (CBT) plus contingency management (CM) in this population, and examined whether CM for smoking cessation improved CBT treatment outcomes at end of treatment (EOT) and at 1-, 3-, 6-, and 12-month follow-ups (FU).

METHODS

In an 8-week randomized clinical trial, 120 adults who smoke with overweight or obesity (54.16% females; MBMI = 31.75 ± 4.31) were randomly assigned to CBT for both quitting smoking and weight control (n = 60) or the same treatment plus CM for smoking cessation (n = 60). Outcome variables were compared (i.e., treatment completion, smoking abstinence, weight change and secondary outcomes).

RESULTS

At EOT, the CBT + CM group achieved 78.33% 7-day point-prevalence abstinence rates compared to 61.67% in the CBT group (p = .073), and rates declined over time (12-month FU: 18% vs 12%). Participants who attained abstinence weighed more compared to baseline at EOT (Mkg = 1.07; SD = 1.88) and over time (12-month FU: Mkg = 4.19; SD = 4.31). No differences were found between the two groups in outcome variables.

CONCLUSIONS

Both interventions were effective in promoting abstinence and reducing tobacco use over time. Combining CBT with CM for smoking cessation did not improve treatment outcomes in individuals with overweight or obesity compared to CBT only. Future studies should evaluate whether implementing CM for weight maintenance helps control post-cessation weight gain in this population.

The Product Science of Electrically Heated Tobacco Products: An Updated Narrative Review of the Scientific Literature

Heated tobacco products represent a novel category of tobacco products in which a tobacco consumable is heated to a temperature that releases nicotine from the tobacco leaf but not to a temperature sufficient to cause combustion. Heated tobacco products may therefore have the potential to be a less harmful alternative for adult smokers who would otherwise continue to smoke cigarettes, as their use should result in exposure to substantially fewer and lower levels of toxicants. This update represents a two-year extension to our previous narrative review, which covered peer-reviewed journal articles published up to August 31, 2021. The scientific evidence published between 2021 and 2023 continues to indicate that aerosols produced from heated tobacco products contain fewer and substantially lower levels of harmful and potentially harmful constituents and that these observed reductions consistently translate to reduced biological effects in both in vitro and in vivo toxicological studies. Biomarker and clinical data from studies in which product use is controlled within a clinical setting continue to suggest changes in levels of biomarkers of exposure, biomarkers of potential harm, and clinical endpoints indicating the potential for reduced harm with switching to exclusive use of heated tobacco products in adult smokers. Overall, the available peer-reviewed scientific evidence continues to indicate that heated tobacco products offer promise as a potentially less harmful alternative to cigarettes, and as such, the conclusions of our original narrative review remain valid.

Depression Severity Moderates Reward Learning Among Smokers With Current or Past Major Depressive Disorder in a Smoking Cessation Randomized Clinical Trial

INTRODUCTION

Behavioral and pharmacological smoking cessation treatments are hypothesized to increase patients' reward learning to reduce craving. Identifying changes in reward learning processes that support effective tobacco-dependence interventions among smokers who experience depression may guide patients toward efficient treatment strategies. The objective was to investigate the extent to which adult daily cigarette smokers with current or past major depressive disorder (MDD) learned to seek reward during 12 weeks of treatment combining behavioral activation and varenicline. We hypothesized that a decline in reward learning would be attenuated (least to most) in the following order: (1) behavioral activation integrated with ST (BASC) + varenicline, (2) BASC + placebo, (3) standard behavioral cessation treatment (ST) + varenicline, (4) ST + placebo.

METHODS

We ran a phase IV, placebo-controlled, randomized clinical trial with 300 participants receiving 12 weeks of one of four conditions across two urban medical centers. Depressive symptoms were measured using the Beck Depression Inventory-II (BDI). Reward learning was ascertained at weeks 1, 7, and 14 using the Probabilistic Reward Task (PRT), a laboratory task that uses an asymmetric reinforcement schedule to assess (a) learning to seek reward (response bias), (b) differentiate between stimuli, and (c) time to react to cues.

RESULTS

There was a significant interaction of BDI group × PRT response bias. Response bias declined from weeks 7 to 14 among participants with high baseline depression symptoms. The other two BDI groups showed no change in response bias.

CONCLUSIONS

Controlling for baseline depression, participants showed a decrease in response bias from weeks 1 to 14, and from weeks 7 to 14. Treatment condition and abstinence status were unassociated with change in reward learning.

IMPLICATIONS

Smokers who report greater depression severity show a decline in reward learning despite their participation in smoking cessation treatments, suggesting that depressed populations pose unique challenges with standard smoking cessation approaches.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT02378714.

Examining the correlates of cigarette smoking, e-cigarette use and dual use among Canadian post-secondary students

Many Canadians use nicotine products such as cigarettes and e-cigarettes. A particular subpopulation of concern is post-secondary students given they have a higher prevalence of use. Many correlates of cigarette smoking and e-cigarette use have been identified. However, less focus has been on examining the correlates of cigarette smoking, e-cigarette use and dual use. This study explores the correlates of different nicotine modality use in post-secondary students. Using data from the Canadian Campus Wellbeing Survey (CCWS; n = 27,164), a multi-level nominal regression assessed the correlates of nicotine modality use. In comparison to individuals who were <20, individuals 20-24 (OR = .448, 95% CI .321, .625), 25-29 (OR = .140, 95% CI .093, .212), 30-34 (OR = .076, 95% CI .046, .125) and over 35 (OR = .041, 95% CI .024, .071) had lower odds of e-cigarette use compared to cigarette smoking. Identifying as a woman (OR = 1.553, 95% CI 1.202, 2.006), non-heterosexual (OR = .642, 95% CI = .485,0.851), current cannabis user (OR = 1.651, 95% CI 1.296, 2.104), and being an international student (OR = .350, 95% CI .251, .487) also impacted the odds of e-cigarette use vs only cigarette smoking. When considering dual use vs cigarette smoking, individuals aged 20-24 (OR = .491, 95% CI .337, .717), 25-29 (OR = .221, 95% CI .137, .357), 30-34 (OR = .163, 95% CI .091, .292) and over 35 (OR = .122, 95% CI .065, .230) had lower odds than individuals <20. Current cannabis use (OR = 1.680, 95% CI = 1.209, 2.138), binge drinking (OR = 1.885, 95% CI 1.384, 2.568), and international student status (OR = .689, 95% CI .476, .996) also impacted cigarette smoking vs dual-use. Overall, a minority of young adults (11.5%) at post-secondary institutions in our sample use nicotine products, and the higher prevalence of e-cigarette use warrants continued monitoring. Health promotion campaigns addressing e-cigarette use are required. Additionally, tailored intervention efforts could prioritize the treatment needs of international students studying in Canada.

Parameter Space and Potential for Biomarker Development in 25 Years of fMRI Drug Cue Reactivity: A Systematic Review

Importance

In the last 25 years, functional magnetic resonance imaging drug cue reactivity (FDCR) studies have characterized some core aspects in the neurobiology of drug addiction. However, no FDCR-derived biomarkers have been approved for treatment development or clinical adoption. Traversing this translational gap requires a systematic assessment of the FDCR literature evidence, its heterogeneity, and an evaluation of possible clinical uses of FDCR-derived biomarkers.

Objective

To summarize the state of the field of FDCR, assess their potential for biomarker development, and outline a clear process for biomarker qualification to guide future research and validation efforts.

Evidence Review

The PubMed and Medline databases were searched for every original FDCR investigation published from database inception until December 2022. Collected data covered study design, participant characteristics, FDCR task design, and whether each study provided evidence that might potentially help develop susceptibility, diagnostic, response, prognostic, predictive, or severity biomarkers for 1 or more addictive disorders.

Findings

There were 415 FDCR studies published between 1998 and 2022. Most focused on nicotine (122 [29.6%]), alcohol (120 [29.2%]), or cocaine (46 [11.1%]), and most used visual cues (354 [85.3%]). Together, these studies recruited 19 311 participants, including 13 812 individuals with past or current substance use disorders. Most studies could potentially support biomarker development, including diagnostic (143 [32.7%]), treatment response (141 [32.3%]), severity (84 [19.2%]), prognostic (30 [6.9%]), predictive (25 [5.7%]), monitoring (12 [2.7%]), and susceptibility (2 [0.5%]) biomarkers. A total of 155 interventional studies used FDCR, mostly to investigate pharmacological (67 [43.2%]) or cognitive/behavioral (51 [32.9%]) interventions; 141 studies used FDCR as a response measure, of which 125 (88.7%) reported significant interventional FDCR alterations; and 25 studies used FDCR as an intervention outcome predictor, with 24 (96%) finding significant associations between FDCR markers and treatment outcomes.

Conclusions and Relevance

Based on this systematic review and the proposed biomarker development framework, there is a pathway for the development and regulatory qualification of FDCR-based biomarkers of addiction and recovery. Further validation could support the use of FDCR-derived measures, potentially accelerating treatment development and improving diagnostic, prognostic, and predictive clinical judgments.

Determinants of Smoking Cessation Outcomes and Reasons for Relapse in Patients Admitted to a Smoking Cessation Outpatient Clinic in Turkey

The aim of this study was to identify the determinants of smoking cessation outcomes and reasons for relapse following smoking cessation treatment. Using a mixed-method design, 179 patients were recruited from the Smoking Cessation outpatient clinic of Ankara Numune Training and Research Hospital between May 2016 and May 2017. Quantitative data were collected via questionnaires or from patient files and qualitative data were obtained via 5 focus group interviews with 28 patients who relapsed to smoking following treatment. The success rate of the smoking cessation clinic at the end of one year was 26%. The number of applications to the clinic was significantly higher in the group who quit smoking. Treatment success was found to be higher in the group that applied behavioral recommendations. In focus group interviews with patients who relapsed, the most common causes were stressful events, especially workplace problems and serious health problems experienced by relatives. The presence of smokers in the immediate vicinity increased the risk of relapse. It was concluded that not stopping treatment before the recommended period, continuity in follow-up appointments, support of the environment, support of pharmacotherapy with cognitive behavioral therapy and improving patients' coping skills were important.

The prevalence and sociodemographic determinants of tobacco and nicotine use among students in healthcare disciplines in Saudi Arabian universities: a cross-sectional survey

Background

Tobacco smoking is one of the most significant health-related problems worldwide. However, the prevalence and sociodemographic determinants of tobacco and nicotine use among students on healthcare courses in Saudi Arabia are limited.

Methods

This cross-sectional study used a questionnaire that was distributed via SurveyMonkey between November 2022 and June 2023 to all student universities offering healthcare courses. Data are presented as frequency and percentages. The associated sociodemographic factors with current tobacco and nicotine use were subjected to logistic regression.

Results

Overall, 5,012, of whom 3,872 (77.25%) were males, responded to the online survey. The prevalence of current tobacco and nicotine use was 3,553 (71%). The majority of users used electronic nicotine delivery systems (1,622: 32.36%). The current use of cigarettes (AOR: 1.75 (1.42 to 2.15)), e-cigarettes (AOR: 1.17 (1.01 to 1.37)), and smokeless tobacco substances (AOR: 1.35 (1.02 to 1.90)) were more pronounced among males compared to female students. However, the current use of a hookah was less among males (AOR: 0.74 (95% CI: 61 to 0.91)). Smoking cigarettes was practiced less among students living in other regions compared to the Central Region. However, smokeless tobacco substances seem to be more prevalent in the Western, Southern, and Northern Regions, (AOR: 1.57 (95% CI: 1.09 to 2.26)), (AOR: 1.43 (95% CI: 1.04 to 1.95)), and (AOR: 1.57 (95% CI: 1.09 to 2.26)), respectively.

Conclusion

Smoking is prevalent among students in the healthcare disciplines, with electronic nicotine delivery systems being the most used product. Several sociodemographic factors were associated with higher tobacco or nicotine use.

Through the Looking Glass: Revisiting Smoking and Health

January 11, 2024, marked the 60th anniversary of the initial U.S. Surgeon General report "Smoking and Health," which definitively linked cigarette smoking and lung cancer.1 Similar to the old Virginia Slims slogan "you've come a long way, baby," smoking rates have diminished greatly since the release of that report.2 However, smoking still represents the leading cause of preventable deaths.3 Numerous countries have enacted policies aimed at decreasing conventional cigarette use, such as including warning labels on tobacco products, limiting advertising, and imposing bans on particular products. Such measures have contributed to significant reductions in cigarette use.

Changes in E-cigarette Use, Cigarette Smoking, and Dual-Use Among the Youth (13-15 Years) in 10 Countries (2013-2019)-Analyses of Global Youth Tobacco Surveys

INTRODUCTION

The increasing use of e-cigarettes among the youth is a public health problem that needs surveillance. We report changes in e-cigarette use, cigarette smoking, and "dual use" among youth in 10 countries.

AIMS AND METHODS

Global Youth Tobacco Survey (GYTS)s from Georgia, Iraq, Italy, Latvia, Montenegro, Paraguay, Peru, Qatar, Romania, and San Marino were analyzed. Changes in prevalence of "awareness of e-cigarettes," "ever use" (even tried a few puffs) and "current use" (during last 30 days) of e-cigarettes and cigarette smoking, and "dual use" (both e-cigarette and cigarette smoking) between baseline (2013 and 2014) and most recent (2017-2019) surveys were estimated.

RESULTS

"Awareness of e-cigarettes" and "ever e-cigarette use" significantly increased (p < .001). "Ever e-cigarette use" was highest in Italy, 93% (95% CI 90.9, 94.4). "Current e-cigarette use" significantly (p < .05) increased by > 50% in most countries. During the most recent surveys, "current e-cigarette" use was > 10% in five countries Italy (18.3%) and Latvia (18.5%) being the highest. Cigarette smoking significantly declined in Italy, Latvia, Peru, and San Marino (p < .05) but remains unchanged in other countries. "Dual use" (both electronic and conventional cigarettes) significantly increased in all countries (p < .001). During the most recent surveys "dual use" was highest in Italy (10%, 95% CI 8.1, 12.2) and Latvia (8.6%, 95% CI 7.2, 10.2). Youth aged 14 and ≥15 years the smokers, were more likely to be e-cigarette users.

CONCLUSIONS

Awareness and use of e-cigarettes and "dual use" among youth have increased. Closer monitoring of tobacco use among youths and comprehensive tobacco control policies inclusive of e-cigarettes are needed.

IMPLICATIONS

Secondary data analyses of serial GYTSs in 10 countries showed that both awareness of e-cigarette and e-cigarette use has increased among school-going youth aged 13-15 years. A concurrent increase in "dual use" of e-cigarettes and cigarette smoking during the last 30 days in all 10 countries indicates continued cigarette smoking in the absence of e-cigarettes because of the common risk construct of tobacco product use. Results call for continued surveillance of both e-cigarettes and cigarette smoking among school-going youth. Comprehensive tobacco control measures inclusive of e-cigarettes should be implemented to reduce tobacco use among the youth.

Analyzing arguments on tobacco tax increases. Focus on French parliamentary questions and responses, 2000-2020

INTRODUCTION

Tax increases are the most effective but still the least-used tobacco control measure. The tobacco industry (TI) employs lobbying strategies to oppose the implementation of tax policies on its products. Over the past two decades, French tobacco tax policies have been characterized by a relative inconsistency. This research aims to understand why, by analyzing the arguments of French policymakers (MPs and government) between 2000 and 2020 in favor or against tax increases.

METHODS

To capture parliamentary debates, we performed an advanced term search on the French National Assembly website, using the keyword 'tobacco'. The search returned 5126 available documents out of which 1106 (12.6%, 645 questions, 461 responses) covered price and taxation and were included. They were analyzed using descriptive statistics and thematic content analysis (NVivo) and were compared, when relevant, to arguments raised in the international literature on TI lobbying against taxation increases.

RESULTS

We found 3176 arguments on tobacco taxation: 77.2% were against tobacco tax increases and 22.7% were in favor of tax policies. Arguments varied depending on the source: 92.4% of MPs' arguments were against tax increases, while 52.1% of arguments from government responses were in favor. The anti-tax arguments were similar to those identified in the international literature that singled out negative economic and social consequences (illicit trade, penalizing tobacconists). Other arguments that were more specific to the French context, highlighted the key economic and social role played by tobacconists in France. Pro-tax arguments highlighted the health, economic and social benefits of tax policies.

CONCLUSIONS

This is the first French tobacco research on parliamentary documents, although Parliament is a place of direct TI lobbying. It will enable public health actors to better understand the arguments used by the TI in order to counter them in front of MPs, and to better monitor debates in Parliament.

National and regional economic inequalities in first- and second-hand tobacco consumption among women of reproductive ages in Iran

INTRODUCTION

The epidemic of tobacco consumption is one of the major public health threats the world has been facing so far. This study was performed to investigate the economic inequalities in tobacco consumption among women of reproductive ages at national and regional levels in Iran.

METHODS

We used data from 10,339 women of reproductive ages (18-49 years) who participated in Iran's 7th Non-Communicable Disease Risk Factor Surveillance (STEPS). Wagstaff normalized concentration index and decomposition method were applied to measure economic inequalities in first- and second-hand tobacco consumption and determine their corresponding contributory factors, respectively.

RESULTS

The prevalence of women's first-hand tobacco consumption, and their exposure to second-hand smoke in the home, and workplace were 3.6%, 28.3%, and 8.4%, respectively. First- and second-hand tobacco consumption was significantly more concentrated among low-economic women. Exposure to home second-hand smoke, education, and economic status had the largest contributions to the measured inequality in first-hand tobacco consumption (48.9%, 38.9%, and 30.8%, respectively). The measured inequality in women's secondhand smoke exposure at home was explained by their level of education (43.8%), economic status (30.3%), and residency in rural areas (18%), and at work by residency in rural areas (42.2%), economic status (38.8%), and level of education (32%). Our results also revealed diversity in the geographical distribution of inequalities in rural and urban areas and five regions of the country.

CONCLUSION

The present study highlighted the need for more enforcement of tobacco control rules and increasing tobacco taxes as general measures. Furthermore, there is a need for gender-sensitive initiatives at national and regional levels to educate, support, and empower low-economic women and households for tobacco cessation, and complying with restrictive smoking rules.

Implementation of the Article 13 WHO FCTC measures and changes in cigarette smoking among youth in 42 countries

INTRODUCTION

Despite a decline in global smoking prevalence among adolescents, around 21 million youth report current cigarette smoking. Exposure to tobacco advertising, promotion and sponsorship (TAPS) is a risk factor for smoking initiation, and therefore the Article 13 of the WHO Framework Convention on Tobacco Control (WHO FCTC) requires comprehensive TAPS bans. We examined the associations between changes in youth cigarette smoking and implementation of Article 13.

METHODS

We used two rounds of cross-sectional data from the Global Youth Tobacco Survey (GYTS) for 42 countries: first between 2006 and 2015, and second between 2017 and 2020. The GYTS data were linked with the WHO FCTC implementation reports from 2016 and 2018. The outcome was current smoking. Multilevel binary logistic regression models, stratified by country income level, were used to test the prevalence differences between the latest and previous GYTS rounds and their associations with TAPS bans with postestimations using marginal analyses.

RESULTS

The percentage of students currently smoking decreased from 10.0% (95% CI 8.0 to 12.1) to 7.7% (95% CI 6.1 to 9.3) from first to second GYTS rounds (p<0.001), adjusting for country clustering. In low-income and lower-middle-income countries, the degree of decrease significantly differed between countries with versus without bans on display, partial internet TAPS ban, ban on depiction of tobacco products and by number of TAPS measures, adjusting for age and sex of the respondents. In high-income and upper-middle-income countries, the degree of decrease significantly differed by presence (or absence) of partial or full internet TAPS ban, ban on product placement and by number of TAPS measures.

CONCLUSION

Implementation of TAPS bans is associated with decreased smoking among adolescents both in high-income and low-income countries. Enhanced and continuous efforts are necessary to protect youth from the promotion of tobacco and nicotine products.

Chronic nicotine exposure is associated with electrophysiological and sympathetic remodeling in the intact rabbit heart

Nicotine is the primary addictive component in tobacco products. Through its actions on the heart and autonomic nervous system, nicotine exposure is associated with electrophysiological changes and increased arrhythmia susceptibility. However, the underlying mechanisms are unclear. To address this, we treated rabbits with transdermal nicotine (NIC, 21 mg/day) or control (CT) patches for 28 days prior to performing dual optical mapping of transmembrane potential (RH237) and intracellular Ca 2+ (Rhod-2 AM) in isolated hearts with intact sympathetic innervation. Sympathetic nerve stimulation (SNS) was performed at the 1 st - 3 rd thoracic vertebrae, and β-adrenergic responsiveness was additionally evaluated as changes in heart rate (HR) following norepinephrine (NE) perfusion. Baseline ex vivo HR and SNS stimulation threshold were increased in NIC vs. CT ( P = 0.004 and P = 0.003 respectively). Action potential duration alternans emerged at longer pacing cycle lengths (PCL) in NIC vs. CT at baseline ( P = 0.002) and during SNS ( P = 0.0003), with similar results obtained for Ca 2+ transient alternans. SNS reduced the PCL at which alternans emerged in CT but not NIC hearts. NIC exposed hearts also tended to have slower and reduced HR responses to NE perfusion. While fibrosis was unaltered, NIC hearts had lower sympathetic nerve density ( P = 0.03) but no difference in NE content vs. CT. These results suggest both sympathetic hypo-innervation of the myocardium and diminished β-adrenergic responsiveness with NIC. This autonomic remodeling may underlie the increased risk of arrhythmias associated with nicotine exposure, which may be further exacerbated with continued long-term usage.

NEW & NOTEWORTHY

Here we show that chronic nicotine exposure was associated with increased heart rate, lower threshold for alternans and reduced sympathetic electrophysiological responses in the intact rabbit heart. We suggest that this was due to the sympathetic hypo-innervation of the myocardium and diminished β- adrenergic responsiveness observed following nicotine treatment. Though these differences did not result in increased arrhythmia propensity in our study, we hypothesize that prolonged nicotine exposure may exacerbate this pro-arrhythmic remodeling.

Vaping and Hookah Use Among Medical Trainees: A Multinational Survey Study

The increased use of E-cigarettes and hookah among young consumers represents a public health concern. This study aimed to investigate the frequency and patterns of use of E-cigarettes and hookah among medical trainees. This cross-sectional multinational online survey included medical students, residents, and fellows in Brazil, the U.S., and India between October 2020 and November 2021. Information on sociodemographics; mental health; and E-cigarettes, hookah, tobacco, marijuana, and alcohol use were collected. Generalized structural equation models were used in 2022 to explore the factors associated with current vaping and current hookah use (ongoing monthly/weekly/daily use). People reporting previous sporadic/frequent use or those who never used/only tried it once were the reference group. Overall, 7,526 participants were recruited (Brazil=3,093; U.S.=3,067; India=1,366). The frequency of current vaping was 20% (Brazil), 11% (U.S.), and <1% (India), and current hookah use was 10% (Brazil), 6% (U.S.), and 1% (India). Higher family income (OR=6.35, 95% CI=4.42, 9.12), smoking cigarettes (OR=5.88, 95% CI=4.88, 7.09) and marijuana (OR=2.8, 95% CI=2.35, 3.34), and binge drinking (OR=3.03, 95% CI=2.56, 3.59) were associated with current vaping. The same was true for hookah use: higher family income (OR=2.69, 95% CI=1.75, 4.14), smoking cigarettes (OR=3.20, 95% CI=2.53, 4.06), smoking marijuana (OR=4.17, 95% CI=3.35, 4.19), and binge drinking (OR=2.42, 95% CI=1.96, 2.99). In conclusion, E-cigarettes and hookah were frequently used by Brazilian and American trainees, sharply contrasting with data from India. Cultural aspects and public health policies may explain the differences among countries. Addressing the problems of hookah and E-cigarette smoking in this population is relevant to avoid the renormalization of smoking.

Occupational health hazards of bidi workers and their families in India: a scoping review

BACKGROUND

Bidi workers and their families are exposed to harmful substances during bidi rolling, thereby jeopardising their health. We aimed to assess existing evidence on health conditions of bidi workers and their families in India.

METHODS

We searched nine databases and relevant websites, and conducted citation screening to identify primary studies assessing occupational health hazards of bidi workers and their families. Two authors independently conducted screening and data extraction. We synthesised the findings narratively in a structured fashion.

RESULTS

We found 3842 studies, out of which 95 studies met our eligibility criteria. High prevalence of disease conditions across all organ systems of the body was reported in bidi workers. Studies on female bidi workers showed decreased fertility (n=2), increased frequency of miscarriages (n=1) and higher risk of cervical cancer (n=1). Pregnant bidi workers were at an increased risk of anaemia and pregnancy-induced hypertension (n=2), higher frequency of neonatal deaths (n=1), stillbirths (n=1) and premature births (n=1) in comparison with non-bidi workers. Babies born to bidi workers reported low birth weight (n=5). Evidence from cohort studies suggests causal nature of the exposure to the disease condition.

CONCLUSION

Our review shows that bidi rolling leads to numerous occupational health hazards in bidi workers and their family members. It is essential to provide alternative livelihoods, and safe and protective working environment, and cover bidi workers under various social security provisions to alleviate the deleterious effect of bidi making at home. It is also important to shift bidi making away from home and strengthen existing regulations and promulgation of new provisions, including India's Occupational Safety, Health, and Working Conditions Code 2020.

The prevalence of smoking and the levels of self-esteem and self-efficacy among adolescents in Turkey: A descriptive cross-sectional study

PURPOSE

This study was conducted to determine the prevalence of smoking and the levels of self-esteem and self-efficacy in adolescents and to examine the risk factors affecting smoking.

DESIGN AND METHODS

The present study is a cross-sectional descriptive study. This study was conducted with a total of 2566 adolescents (13-19 years of age). In order to collect research data, Personal Information Form, Rosenberg Self-Esteem Scale, and Self-Efficacy Scale for Children were used.

RESULTS

In the current study, the mean age of adolescents was 15.88 ± 1.20 years and the prevalence of smoking was 11.3%. Variables such as age, gender, family type, parental employment status, presence of smokers in the immediate circle, and self-efficacy levels were determined as risk factors that had an impact on smoking. It was found that the total score of the self-efficacy scale increased the probability of smoking by 3.413 times, the academic self-efficacy subscale by 5.064 times, and the emotional self-efficacy subscale by 2.045 times.

CONCLUSION

The present study concludes that certain adolescents are in the risk group. The adolescents in the risk of smoking are those who have low levels of self-efficacy, who are older, male, have a nuclear family, whose mothers do not work, whose fathers work, and who have smokers in their immediate circle.

PRACTICAL IMPLICATIONS

School nurses can identify students at risk of smoking at an early stage. In addition, training sessions and intervention programs aimed at improving social skills can be developed to boost their self-efficacy.

Prevalence of use, perceptions of harm and addictiveness, and dependence of electronic cigarettes among adults in Kuwait: A cross-sectional study

INTRODUCTION

Electronic cigarettes (e-cigarettes) have become one of the most common forms of nicotine delivery used by youth and young adults worldwide. Given the lack of epidemiologic data in Kuwait, this study sought to estimate the prevalence of e-cigarette use, assess perceptions of harm and addictiveness of e-cigarettes, measure the level of dependence on e-cigarettes and assess factors associated with dependence level among adults.

METHODS

A cross-sectional study enrolled adults (n=3032, aged ≥18 years) living in Kuwait using a web-based questionnaire. Participants self-reported ever and current (past 30-day) e-cigarette use and self-completed the 10-item Penn State E-cigarette Dependence Index. Associations were evaluated using multinomial logistic regression.

RESULTS

The prevalence of ever and current e-cigarette use was estimated to be 40.2% (1220/3032) and 29.4% (892/3032), respectively. The prevalence of current e-cigarette use was higher in males compared to females (47.6% vs 14.4%, p<0.001). Relative to cigarette smoking, 40.6% of participants reported that e-cigarettes are less harmful, and 41.8% indicated that e-cigarettes are equally addictive. Among current e-cigarette users (n=892), 84.8% were ascertained to have developed either low, medium, or high dependence. The use of pod-based devices compared to disposable devices was associated with a high dependence level (adjusted odds ratio, AOR=8.56; 95% CI: 4.52-16.22).

CONCLUSIONS

These findings suggest that a large proportion of adults in Kuwait use e-cigarettes, and a considerable proportion of current users have developed dependence. Therefore, such results should alert public health authorities and warrant the development of evidence-based awareness campaigns, policies, and prevention measures to protect and improve the health of people.

Gendered Pattern and Predictors of Tobacco use in India: Evidence from the Second Round of Global adult Tobacco Survey

Background

India has completed the second round of the Global Adult Tobacco Survey (GATS) to monitor adult tobacco use and progress in tobacco control efforts. This study assesses the gendered pattern of tobacco use and its predictors in the second rounds of GATS.

Material and Methods

Publicly available GATS-2 (2016-2017) data was analyzed which contains self-reported tobacco use information of ≥15 years Indians (n = 74,037). The independent predictors of "smoking only," "smokeless only," and "dual use" among current male and female tobacco users were assessed using the multinomial regression model.

Results

The burden of "smoking only," "smokeless only," and "dual-use" of tobacco were 8.9% (8.74-9.15), 16.69% (16.42-16.96), and 3.89% (3.75-4.03), respectively, in the second round with wide regional variation as well as male dominance in use. Region, age, education, caste, and religion were significantly and consistently associated with different types of tobacco use in both genders. Other contextual predictors of tobacco use were residence, marital status, occupation, awareness, and wealth index (WI).

Conclusions

Tobacco use predictors and their gendered patterns are contextual. Monitoring the predictors for tobacco use, which may change over time, should be given priority in the national tobacco control program.

Global, regional, and national deaths, disability-adjusted life years, years lived with disability, and years of life lost for the global disease burden attributable to second-hand smoke, 1990-2019: A systematic analysis for the Global Burden of Disease Study

BACKGROUND

Smoke-free policies have led to a decline in smoking prevalence. Nevertheless, as the global population grows, more non-smokers are exposed to second-hand smoke (SHS) hazards. Mitigating SHS hazards requires a systematic analysis of the global disease burden attributable to SHS.

METHODS

Data on SHS was extracted from the Global Burden of Disease Study 2019. First, we measured the disease burden of SHS by the number of cases and age-standardized rates of deaths, disability-adjusted life years (DALYs), years lived with disability (YLDs), and years of life lost (YLLs) from 1990 to 2019. Second, trends in the disease burden of SHS in different periods were estimated based on the annual percentage change (APC) by joinpoint regression analysis. Finally, using histogram plots, world maps, Pearson correlation analysis, and population attributable fraction (PAF), we conducted a stratified analysis of SHS exposure by sex, age, geographic location, sociodemographic index (SDI) level, and disease.

RESULTS

The number of deaths caused by SHS remained stable between 1990 and 2019, and the number of YLDs more than doubled in three decades. In contrast, the number of DALYs and YLLs caused by SHS decreased. The declining trend in deaths (APC = -1.42 % [95 % UI -1.79 %, -1.05 %]), DALYs (APC = -1.91 % [95 % UI -2.15 %, -1.67 %]), and YLLs (APC = -1.28 % [95 % UI -1.93 %, -0.64 %]) had slowed down in recent years, while SHS-related YLDs were still increasing (APC = 1.84 % [95 % UI 0.74 %, 2.96 %]). From 2010 to 2019, we found that SHS exposure increased the risk of tracheal, bronchus, and lung cancer (PAF increased by 11.75 %), breast cancer (PAF increased by 5.36 %), diabetes mellitus (PAF increased by 8.24 %), and ischemic heart disease (PAF increased by 4.46 %). In addition, the disease burden caused by SHS was highest in middle SDI and low-middle SDI countries.

CONCLUSION

The global disease burden attributable to SHS is still severe, and policymakers need to implement more effective measures to reduce the harm of SHS.

Nudging Interventions on Alcohol and Tobacco Consumption in Adults: A Scoping Review of the Literature

Background: The World Health Organization identified alcohol and tobacco consumption as the risk factors with a greater attributable burden and number of deaths related to non-communicable diseases. A promising technique aimed to modify behavioral risk factors by redesigning the elements influencing the choice of people is nudging. Methodology: A scoping review of the literature was performed to map the literature evidence investigating the use of nudging for tobacco and alcohol consumption prevention and/or control in adults. Results: A total of 20 studies were included. The identified nudging categories were increasing salience of information or incentives (IS), default choices (DF), and providing feedback (PF). Almost three-quarters of the studies implementing IS and half of those implementing PF reported a success. Three-quarters of the studies using IS in conjunction with other interventions reported a success whereas more than half of the those with IS alone reported a success. The PF strategy performed better in multi-component interventions targeting alcohol consumption. Only one DF mono-component study addressing alcohol consumption reported a success. Conclusions: To achieve a higher impact, nudging should be integrated into comprehensive prevention policy frameworks, with dedicated education sessions for health professionals. In conclusion, nudge strategies for tobacco and alcohol consumption prevention in adults show promising results. Further research is needed to investigate the use of nudge strategies in socio-economically diverse groups and in young populations.

Death, Disability, and Premature Life Years Lost Due to Cigarettes, Bidis, and Smokeless Tobacco in India: A Comparative Assessment

BACKGROUND

Due to the staggering number of tobacco users in India, it is important to determine the exact mortality and morbidity rates due to tobacco use. This study aimed to estimate deaths, disability-adjusted life years (DALYs), and years of life lost (YLLs) attributable to cigarettes, bidis, and smokeless tobacco (SLT) in India.

METHODS

Data pooling and meta-analysis were done using case-control studies available on the three types of tobacco products. Health burden was estimated by applying the population attributable fraction (PAF) value to the total disease burden.

FINDINGS

A total of 33 studies were included. PAF was calculated for oral and lung cancer as well as ischemic heart disease (IHD) due to cigarettes, oral and lung cancer, IHD, and chronic obstructive pulmonary disease due to bidi, and oral and stomach cancer and IHD due to SLT. Cigarettes resulted in 8.4 million DALYs, 8.26 million YLLs, and 341 deaths; bidis led to 11.7 million DALYs, 10.7 million YLLs, and 478 thousand deaths, and SLTs accounted for 4.38 million DALYs, 4.3 million YLLs, and 171 thousand deaths annually.

CONCLUSION

Evidence of measurable health burden and methodology for calculation for individual states was provided in the study. The generated evidence could be utilized for policy recommendations and revision of the existing taxation norms.

The association between cigarette smoking and health care service utilization among middle-aged and elderly adults in China

Objective

To assess the associations between tobacco use and health care service utilization in Chinese individuals aged more or equal to 40 years old.

Method

This research was a cross-sectional study using data from eight provinces in China, and the final sample consisted of 4,733 observations (4,749 participants) aged more or equal to 40 years old. The dependent variable was health care utilization measured by outpatient and inpatient service utilization. Descriptive statistics were used to summarize the socio-demographic characteristics of the sample according to smoking status. The association between tobacco use and health care service utilization was examined by an instrumental variable (IV) probit model.

Results

Of the respondents interviewed in 2020, 3,116 (65.84%) were never smokers, 654 (13.82%) were smokers with the smoking index (SI) <400, and 963(20.34%) were smokers with SI≥400. Smokers with SI <400 reported a 6.80% higher probability of using outpatient services. Smokers with SI <400 and SI≥400 reported a 3.10 and 4.20% higher average probability of using ≥3 outpatient visits than never smokers, respectively. Additionally, smokers with SI <400 and SI≥400 reported a 6.30 and 6.20% higher average probability of using inpatient services than those who had not smoked. Moreover, smokers with SI≥400 were more likely to have had ≥2 hospital visits than nonsmokers.

Conclusions

Smokers make greater use of health care services. Control of smoking may ease the burden of related health care utilization.

Projections of smoking-related cancer mortality in Australia to 2044

BACKGROUND

While many high-income countries including Australia have successfully implemented a range of tobacco control policies, smoking remains the leading preventable cause of cancer death in Australia. We have projected Australian mortality rates for cancer types, which have been shown to have an established relationship with cigarette smoking and estimated numbers of cancer deaths attributable to smoking to 2044.

METHODS

Cancer types were grouped according to the proportion of cases currently caused by smoking: 8%-30% and >30%. For each group, an age-period- cohort model or generalised linear model with cigarette smoking exposure as a covariate was selected based on the model fit statistics and validation using observed data. The smoking-attributable fraction (SAF) was calculated for each smoking-related cancer using Australian smoking prevalence data and published relative risks.

RESULTS

Despite the decreasing mortality rates projected for the period 2015-2019 to 2040-2044 for both men and women, the overall number of smoking-related cancer deaths is estimated to increase by 28.7% for men and 35.8% for women: from 138 707 (77 839 men and 60 868 women) in 2015-2019 to 182 819 (100 153 men and 82 666 women) in 2040-2044. Over the period 2020-2044, there will be 254 583 cancer deaths (173 943 men and 80 640 women) directly attributable to smoking, with lung, larynx, oesophagus and oral (comprising lip, oral cavity and pharynx) cancers having the largest SAFs.

INTERPRETATION

Cigarette smoking will cause over 250 000 cancer deaths in Australia from 2020 to 2044. Continued efforts in tobacco control remain a public health priority, even in countries where smoking prevalence has substantially declined.