Prevalence of smokeless tobacco use among adults in WHO South-East Asia

Smokeless and combustible tobacco use among 148,944 South Asian adults: a cross-sectional study of South Asia Biobank

INTRODUCTION

Tobacco use, in both smoking and smokeless forms, is highly prevalent among South Asian adults. The aims of the study were twofold: (1) describe patterns of SLT and combustible tobacco product use in four South Asian countries stratified by country and sex, and (2) assess the relationships between SLT and smoking intensity, smoking quit attempts, and smoking cessation among South Asian men.

METHODS

Data were obtained from South Asia Biobank Study, collected between 2018 and 2022 from 148,944 men and women aged 18 years and above, living in Bangladesh, India, Pakistan, or Sri Lanka. Mixed effects multivariable logistic and linear regression were used to quantify the associations of SLT use with quit attempt, cessation, and intensity.

RESULTS

Among the four South Asian countries, Bangladesh has the highest rates of current smoking (39.9% for male, 0.4% for female) and current SLT use (24.7% for male and 23.4% for female). Among male adults, ever SLT use was associated with a higher odds of smoking cessation in Bangladesh (OR, 2.88; 95% CI, 2.65, 3.13), India (OR, 2.02; 95% CI, 1.63, 2.50), and Sri Lanka (OR, 1.36; 95% CI, 1.14, 1.62). Ever SLT use and current SLT use was associated with lower smoking intensity in all countries.

CONCLUSIONS

In this large population-based study of South Asian adults, rates of smoking and SLT use vary widely by country and gender. Men who use SLT products are more likely to abstain from smoking compared with those who do not.

MPOWER Measures and Its Effect on Tobacco Control: A Cross-sectional Comparison of Global Adult Tobacco Surveys, India

OBJECTIVES

To study the MPOWER measures over time (GATS-1 vs GATS-2) and their effects on tobacco control indicators in India.

STUDY DESIGN AND METHODS

The study used a cross-sectional design to compare the common questions identified from GATS-1 and GATS-2. Odds ratios for various MPOWER measures were estimated using a multivariate logistic regression model.

RESULTS

Compared with GATS-1, the current any tobacco use was reduced by 32% in females and 17% in males in GATS-2 (M-measures). The P-measures have reduced across the survey periods. Under O-measures, compared with mixed users, only the male smokeless tobacco (SLT) users reported receiving more advice from a doctor to quit and reported trying more to stop SLT use. Compared with never users (W-measures), the health warnings were noticed on SLT products more by past users, smokers (males), and SLT users, while it was noticed on cigarette packages more by male past users and smokers. Promotion (E-measures) of cigarette and bidi was reported more by smokers (including mixed users), and promotion of SLT product was reported more by smokers (including mixed users) and male SLT users than by never users.

CONCLUSION

Overall, MPOWER measures have shown improvement, with most changes highly reported by the never users and past users than by the current tobacco users. Stringent methods for the enforcement of MPOWER measures to reach all forms of tobacco users and integration of the National Tobacco Control Programme with other national health programs are imperative for highest achievements. Also, specific targeted strategies for the effective control of SLT use are highly recommended to be included in the MPOWER package.

Correlates of nicotine dependence among patients visiting a tobacco cessation centre in India: A retrospective analysis

Background We did a retrospective secondary analysis of 1-year data of a tobacco cessation clinic (TCC) to assess correlates of nicotine dependence among tobacco users visiting the TCC at a tertiary care dental hospital. Methods Secondary data were obtained from the records of patients who had visited the TCC from January to December 2019. Of the 1436 records, 1144 were found to contain all the information needed for the study. Patient records were obtained from a pre-validated standard TCC patient assessment sheet (PAS), which included various sections: Sociodemo-graphic items, tobacco use profile items, nicotine dependence status, strategy used for cessation and follow-up details. Results Of the 1144 proformas, 97.1% (n=1111) were of men and 2.9% (n=33) were of women. Around 48.5% had medium nicotine dependence followed by high nicotine dependence (29.7%) and low nicotine dependence (21.8%). The mean (SD) age of initiation of tobacco use was 26.1 (9.44) years and a significantly lower age of initiation was observed in patients with high nicotine dependence. Greater number of years of tobacco use was significantly associated with high nicotine dependence. About 47% of patients had attempted to quit tobacco in the past and the quitting attempts were found to be significantly higher in patients with high dependence. Conclusion We explored crucial determinants of nicotine dependence among tobacco users reporting to the TCC. These factors may be incorporated in routine assessment of the tobacco use status and may be used in tailored cessation counselling strategies.

Social determinants of sex disparities in cancer in Southeast Asia

Sex disparities in cancer exist along the cancer spectrum, ranging from genomic predisposition and behavioral risk factors to access to screening, diagnostics, treatment, and survivorship care. A growing body of research is studying the biological underpinnings of these differences, from cancer risk to tumor biology to treatment response. It is well known, however, that the social determinants of health play a large role across the cancer disease continuum, which encompasses risk, prevention, diagnosis, treatment, survivorship, rehabilitation, and palliative care. Less literature focuses on the gendered disparities that are epidemiologic in nature, especially in Southeast Asia (SEA), a diverse region that is home to nearly 670 million people, where most are lower middle income countries, and where socioeconomic and cultural factors increase cancer risk for women. In this review, we highlight the social drivers of gendered disparities, namely the geographic, environmental, sociocultural, economic, and political forces that contribute to the increased mortality and poorer health outcomes in the region.

Knowledge, Opinion, and Practices Towards Screening of Oral Cancer Among Homeopathy and Ayurveda Students in Indore, Madhya Pradesh, India

INTRODUCTION

Oral cancer is one of the most common cancers in the world. Early recognition leads to higher cure rates and better quality of life. Homeopathy and Ayurveda can help improve the general well-being and vitality of patients without inducing any side effects.

AIM

To assess knowledge, opinion, and practices towards oral cancer among homeopathy and ayurvedic students.

OBJECTIVES

To find the correlation between knowledge and practices followed by homeopathy and ayurvedic students.

METHOD

A descriptive cross-sectional study was conducted among 157 homeopathy and 153 ayurvedic students in Indore city, Central India. The subjects were selected using a convenient sampling technique, and the data was collected using a pre-tested close-ended self-administered questionnaire with 24 questions. The data were analyzed by IBM Corp. Released 2011. IBM SPSS Statistics for Windows, Version 20.0. Armonk, NY: IBM Corp. using descriptive and analytical (Chi-square and independent sample t-tests) statistics. Correlation analysis was performed to assess the relation between knowledge and preventive practices score.

RESULTS

Homeopathy students showed a significantly higher mean knowledge (4.74+0.96) and practice score (4.82+1.54) as compared to ayurvedic students (knowledge score 4.49+1.11) (practice score 4.09+1.98). No significant differences were observed in the mean knowledge and practice scores of the homeopathy students. There was a statistically significant difference between the mean knowledge score and practice score of third-, fourth-, and fifth-year ayurvedic students at p-value <0.05. A positive (p-value <0.0001) correlation was observed between the knowledge and practice scores for ayurvedic students. As the year of professional studies increased, the overall practice of the students regarding oral cancer also increased, with fifth-year students showing significantly better practice (OR- 1, p-value = <0.05) than the other year students.  Conclusion: Homeopathy students showed better knowledge, whereas ayurvedic students showed better opinions and practices towards oral cancer.

Trends in smokeless tobacco use and attributable mortality and morbidity in the South-East Asia Region: implications for policy

OBJECTIVES

To describe the prevalence of smokeless tobacco (SLT) use and number of users by year, in addition to trends in mortality and attributable disease burden in countries of the WHO South-East Asia Region (SEAR), to inform policies for SLT control in the Region.

METHODS

For each SEAR country, we obtained data from Global Adult Tobacco Surveys, WHO STEPwise Approach to NCD Risk Factor Surveillance surveys and Demographic and Health Surveys conducted since 2010 to estimate prevalence of SLT use by country, sex and year. Using data from the World Population Prospects database we estimated the number of users by country. Next, using the results of previous meta-analyses and prevalence results, we estimated the population attributable fractions and attributable mortality and morbidity in terms of annual deaths and disability-adjusted life years lost. We then characterised trends in attributable deaths and disease burden for countries with comparable data.

RESULTS

There were wide differences in SLT use prevalence by country. We estimated that, during 2015-2019, there were 165 803 900 SLT users across SEAR, with 479 466 attributable deaths annually of which India accounted for 79.9% with 383 248. Attributable annual deaths increased in some countries during 2015-2019.

CONCLUSIONS

Annual deaths and disease burden attributable to SLT remain high across SEAR and have only declined modestly in recent years. Effective implementation of all WHO Framework Convention on Tobacco Control measures, addressing both supply-side and demand-side issues, in relation to SLT and areca nut products must be prioritised to ensure reductions in mortality and disease burden are sustained and accelerated.

Tobacco chewing and associated factors among a vulnerable youth population in Sri Lanka

BACKGROUND

Tobacco in any form kills millions of people every year. Tobacco addiction among youth shows an increasing trend while smokeless type is becoming more common. This study aimed to describe the lifestyle of chewing smokeless tobacco among a group of high-risk youth population in Sri Lanka.

METHODS

A descriptive cross-sectional study was conducted among a sample of 1431 youths aged between 15 to 24 years residing in urban slums in Colombo Sri Lanka, using a cluster sampling technique combined with probability proportionate to size technique. Data were collected using an interviewer-administered questionnaire. Chewing smokeless tobacco was assessed using betel quid chewing and commercially prepared tobacco and areca nut packet chewing. Current chewer was defined as who had the practice of chewing during past 30 days.

RESULTS

The mean age of the study sample was 17.53 (95% CI: 17.40-17.65). Of the 1431 respondents, 57% were males and 43% were females. The prevalence of current smokeless tobacco chewers was 44.9% and among them 90.8% were males and 9.8% were females. Around 31.3% did not have smokeless tobacco chewing practice (Male-5.9%, Female-64.9%). Among the current smokeless tobacco chewers 21.5% chew both types of smokeless tobacco products and all of them were males. Male gender (OR 17.9; 11.4 -27.9) and ever smoking lifestyle (OR 4.4; 2.9-6.6) were significant determinants of current smokeless tobacco chewing lifestyle.

CONCLUSION AND RECOMMENDATIONS

The study shows a high prevalence of smokeless tobacco use by youth aged between 15 to 24 years who were residing in urban slum areas in the district of Colombo, in Sri Lanka, highlighting this target group for early intervention to reduce the uptake and promote the quitting of this practice.

Smokeless tobacco consumption and its association with tobacco control factors in the Western Pacific Region: results from the Global Youth Tobacco Survey 2015-2019

OBJECTIVES

We estimated the prevalence of smokeless tobacco (ST) consumption and its associations with tobacco control factors among school-going youth in 18 Western Pacific Region (WPR) countries.

METHODS

We analyzed school-based Global Youth Tobacco Survey (2014-2019) microdata from 18 WPR countries and estimated weighted prevalence rates of ST consumption, cigarette smoking, and dual use. We used multilevel binary logistic regression to examine the associations of ST consumption and dual use with demographic variables, exposure to pro-tobacco and anti-tobacco factors, national income, and MPOWER indicators.

RESULTS

Data from 58,263 school-going youth were analyzed. The prevalence of past 30-day ST consumption was highest in Kiribati (42.1%), the Marshall Islands (26.1%), Micronesia (21.3%), Palau (16.0%), and Papua New Guinea (15.2%). In adjusted multilevel models, ST consumption and dual use were significantly associated with sex, age, parental smoking, pro-tobacco factors, national income, and MPOWER score. For each unit increase in score for cessation programs, we observed approximately 1.4-fold increases in the odds of youth ST consumption (adjusted odds ratio [aOR], 1.38; 95% confidence interval [CI], 1.15 to 1.66) and dual use (aOR, 1.47; 95% CI, 1.16 to 1.86). Similarly, for each unit increase in score for health-related warnings, the odds of both ST consumption (aOR, 0.47; 95% CI, 0.42 to 0.53) and dual use (aOR, 0.35; 95% CI, 0.30 to 0.42) decreased by approximately 60%.

CONCLUSIONS

The prevalence of youth ST consumption was substantial in the Pacific Islands, exceeding that of cigarette smoking in some countries. Implementing MPOWER measures for ST products could help reduce ST consumption.

The Current Burden of Oropharyngeal Cancer: A Global Assessment Based on GLOBOCAN 2020

BACKGROUND

Oropharyngeal cancer (OPC) is a complex disease whose etiologies, either related to risk factors such as smoking or alcohol, or linked to HPV infection, are believed to be responsible for wide gender and geographical variability. This study depicts the current burden of OPC worldwide.

METHODS

Estimated OPC new cases, deaths, age-standardized rates (ASR) for both incidence and mortality in 2020 were obtained from the GLOBOCAN database for each country and across 20 UN-defined world regions by sex. The incidence-to-mortality ratio (IMR) was also estimated from ASR.

RESULTS

Worldwide, 98,400 new cases and 48,100 OPC deaths were estimated in 2020, with ASR of 1.1 and 0.51 per 100,000 for incidence and mortality, respectively. ASR for both incidence and mortality were approximately four times higher in men and varied greatly across geographical regions and countries within the same region. Higher incidence was estimated in Europe, North-America, Australia, and New Zealand. Mortality was the highest in Central-East Europe, Western Europe, Melanesia, South-Central Asia, and the Caribbean. South-Central Asia, most African areas, and Central America exhibited the lowest IMR values, whereas North-America, Australia, New Zealand, and North-Europe had the highest.

CONCLUSIONS

The marked geographical and gender variability in OPC incidence and mortality is likely to reflect the distribution of risk factors and the diverse prevalence of HPV-negative and HPV-positive cases.

IMPACT

Findings are likely to drive future research, support the development of targeted strategies to counteract disease burden, establish priorities for prevention and treatment programs, and address inequality in access to services.

Gutka consumption and dietary partialities explaining anemia in women of a coastal slum of Karachi, Pakistan: A mixed-method study

BACKGROUND

Limited literature is available on the dietary pattern and its consequences on health of women living in coastal slums of Karachi, Pakistan.

MATERIAL AND METHODS

The study employed a mixed-method approach where concurrent quantitative and qualitative assessments were carried out. An analytical cross-sectional survey was conducted to collect information on demographic, household, obstetrics characteristics, and dietary pattern of married women of reproductive age (MWRA). Blood samples were collected to identify the hemoglobin level to determine anemia. For the qualitative component, focus group discussions were carried out with women and in-depth interviews with shopkeepers to understand the availability of food items at household level and in local markets respectively. In addition, observational visits were carried out at different points in time to the local market to document the availability of iron-rich foods for the community.

RESULTS

The overall prevalence of anemia in sample population was 68.0%. Women with no formal education (AOR: 2.93 95% CI: 1.90-4.52), who consumed gutka (AOR: 2.84 95% CI: 1.81-4.46), did not eat red meat (AOR: 1.68 95% CI: 1.06-2.65), and only had seafood (AOR: 4.56 95% CI: 1.38-15.02) were more likely to be anemic as compared to their counterparts. Qualitative data revealed that any kind of meat and fruits were beyond the reach of community people due to non-affordable cost. A high percentage of women used a locally produced recreational substance known as gutka which gives them a feeling of wellbeing and suppresses hunger.

CONCLUSION

In our study population, lack of access to diversity of food items, illiteracy, and use of gutka are the statistically significant factors which are associated with anemia in married women of this coastal slum area. The lack of demand for diversity in food is related to poverty and preference of spending money on gutka.

The progression of the tobacco epidemic in India on the national and regional level, 1998-2016

BACKGROUND

Evidence regarding the progression of the tobacco epidemic remains fragmented in low- and middle-income countries. In India, most of the studies that examined tobacco consumption focused on one time point, on the country as a whole, and on men. Despite important gender differences in tobacco consumption, vast economic and cultural differences exist within India. We, therefore, assessed the progression of the tobacco epidemic in India on both the national and the regional level, by gender.

METHODS

We use information on current tobacco use among Indians aged 15-49 from three rounds of the National Family Health Survey (NFHS) (1998-99, 2005-06, 2015-16) to estimate the age-standardized sex specific smoking and smokeless tobacco prevalence across India and its states.

RESULTS

Age-standardized tobacco use prevalence in India increased between 1998-1999 and 2005-2006, and declined from 2005-2006 to 2015-2016, simultaneously for men and women. There are substantial spatial differences in the progression of the tobacco epidemic in India. While tobacco use declined in the majority of states, we observe high and increasing use for men in the north-eastern states of Manipur, Mizoram and Nagaland, and for women in the western state of Gujarat and north-eastern state of Manipur. We observed even more states with a recent increasing prevalence in either tobacco smoking or smokeless tobacco. Throughout, prevalence of tobacco use has been higher among men than women for all Indian regions, and remained higher than the national average in the north-eastern states.

CONCLUSIONS

Our results suggest that India and the majority of its states experienced a 'compressed tobacco epidemic' in which the prevalence of tobacco consumption increased and decreased simultaneously for women and men over a comparatively short period of time. Despite the overall progress India made in reducing tobacco use, further lowering tobacco consumption remains a public health priority, as the prevalence of smoking and/or smokeless tobacco use remains high in a number of states. We therefore conclude that tobacco regulations should be expanded with the aim of reducing the overall health burden associated with tobacco consumption across India.

Socioeconomic determinants of smokeless tobacco use among Indian women: An analysis of global adult tobacco survey-2, India

INTRODUCTION

The predominant form of tobacco consumption among women from many Asian countries, including India, is smokeless tobacco (SLT). The present study aimed to assess the prevalence and socioeconomic determinants of SLT use among Indian women.

METHODOLOGY

The study used data from the Global Adult Tobacco Survey-2, India, conducted during 2016-2017, with a sample size of 40,265 women aged 15 years and above. Chi-square test and binary logistic regression were applied with the current use of SLT as the dependent variable to find the sociodemographic factors associated with it.

RESULTS

Overall, 12.8% (95% confidence interval [CI]; 12.4-13.1) of all women and 7.4% (CI: 6.0-8.8) of pregnant women reported SLT use. Its use was higher among women >50 years (23.1%, CI: 22.2-23.8), and those from northeast India (34.9%, CI: 33.8-36.0). Adjusted odds of using SLT were higher among older women (adjusted odds ratio [AOR]: 5.8, CI: 4.5-7.3), women from rural areas (AOR: 1.5, CI: 1.4-1.7), and women belonging to scheduled tribe (AOR: 2.4, CI: 2.2-2.7) as compared to their counterparts. In addition, poor (AOR: 2.6; 95% CI, 2.4-2.8) and middle class (AOR: 1.8; 95% CI, 1.7-2.0) women were more likely to use SLT compared to their rich counterparts. The use of SLT within 30 min of waking up in the morning was seen in 57.2 percent of women users. SLT prevalence was highest among Mizo-speaking women (46.1%, CI: 42.6-49.6), followed by Manipuri (38.9%, CI: 35.5-42.2), Odiya (34.4%), and Khasi (34%, CI: 29.8-38.2).

CONCLUSIONS

There is an imperative need for women-centric schemes on SLT cessation, with special attention to older women, pregnant women, from rural areas, poor households, and the north-eastern region of India.

Tobacco Use Among 1 310 716 Women of Reproductive age (15-49 Years) in 42 Low- and Middle-Income Countries: Secondary Data Analysis From the 2010-2016 Demographic and Health Surveys

INTRODUCTION

Tobacco use among women, especially during pregnancy is a public health concern. There is a need to understand the diverse nature of their tobacco consumption across the globe.

METHODS

We used Demographic and Health Surveys (DHS) data collected between 2010 and 2016 from 42 low- and middle-income countries (LMICs) to estimate the prevalence of smoking, smokeless tobacco, and dual use among pregnant and non-pregnant women of reproductive age (15-49 y). We compared tobacco use between both groups adjusted for age, type of residence, education and combined wealth index, and a subgroup analysis for the South-East Asia Region (SEAR) as the tobacco use in SEAR among women is far more diverse than in other regions primarily due to the popularity of smokeless tobacco use in this region.

RESULTS

Based on the data of 1 310 716 women in 42 LMICs, the prevalence of smoking was 0.69%(95%CI: 0.51-0.90) among pregnant women and 1.09%(95%CI: 0.81-1.42) among non-pregnant women. The prevalence of smokeless tobacco use was 0.56%(95%CI: 0.33-0.84) among pregnant women and 0.78%(95%CI: 0.35-1.37) among non-pregnant women. The relative risk ratios(RRR) for smoking (0.85; 95%CI: 0.67-1.09) and smokeless tobacco use (0.81; 95%CI:0.67-1.00) were not-significantly lower among pregnant women than non-pregnant women and education and wealth index had an inverse relationship with both forms of tobacco. In SEAR, among pregnant women, the prevalence of smoking and smokeless tobacco use was 1.81% and 0.45%, respectively. However, pregnant women were 7%(RRR 1.07; 95%CI:1.02-1.12) more likely to use smokeless tobacco than non-pregnant women.

CONCLUSION

Despite the added risk of foetal harm during pregnancy, there is no evidence that the tobacco consumption between pregnant and non-pregnant women differ in 42 LMICs. A significantly higher use of smokeless tobacco among pregnant women in SEAR is of particular concern and warrants further investigation.

IMPLICATIONS

Tobacco use among women in low- and middle-income countries (LMICs) is lower than high-income countries (HICs), but this may be because LMICs are earlier in the epidemiological transition of tobacco use. If ignored as a public health issue and the tobacco industry continues to market its products to women, the level of tobacco use may rise as it did in HICs. Also, despite low prevalence rates and with no evidence that these differ among pregnant and non-pregnant women, is concerning as tobacco consumption in any form during pregnancy is associated with poor birth outcomes. This suggests a need for raising awareness about the harms of tobacco use among women in LMICs, especially during pregnancy. There is a need to develop preventive and cessation interventions to decrease tobacco use (smoking and smokeless) among women who are from low socio-economic status and less educated, as they bear the greatest burden of tobacco use.

Pilot Model for Community Based Oral Cancer Screening Program: Outcome from 4 Northeastern Provinces in Thailand

Management of advanced-stage oral cancer adds a great burden to individuals and health care systems. Community-based oral cancer screening can be beneficial in early detection and treatment. In this study, a novel oral cancer screening program was conducted utilizing an existing network of health care personnel, facilities, and digital database management for efficient coverage of a large population. The screening program considered 392,396 individuals aged ≥40 from four northeastern provinces in Thailand. Three levels of screening were performed: S1 by village healthcare volunteers to identify risk groups, S2 by dental auxiliaries to visually identify abnormal oral lesions, and S3 by dentists for final diagnosis and management. A total of 349,318 individuals were interviewed for S1, and 192,688 were identified as a risk group. For S2, 88,201 individuals appeared, and 2969 were further referred. Out of 1779 individuals who appeared for S3, oral potentially malignant disorders (OPMDs) were identified in 544, non-OPMDs in 1047, doubtful lesions in 52, and no results in 136 individuals. Final treatment was carried out in 704 individuals that included biopsies of 504 lesions, exhibiting 25 cancerous lesions and 298 OPMDs. This study is so far one of the largest oral cancer screening programs conducted in Thailand and showed effective implementation of community-based oral cancer screening.

Burden of tobacco in Nepal: a systematic analysis from the Global Burden of Disease Study 1990-2017

OBJECTIVE

This study systematically reviews the data extracted from the Global Burden of Disease Study and sets out to assess the age-specific and sex-specific mortality and disability attributable to different forms of tobacco from 1990 to 2017, for Nepal.

DESIGN

This cross-sectional study extracted data from the Institute for Health Metrics and Evaluation's Global Burden of Disease database, then was quantitatively analysed to show the trends and patterns of prevalence of tobacco use, deaths and disability-adjusted life-years (DALYs) attributable to tobacco use from different diseases from the year 1990 to 2017 in Nepal.

SETTING

Nepal.

RESULTS

In between 1990 and 2015, the age-standardised prevalence of daily tobacco smoking decreased by 33% in males, 48% in females and 28% in both. By 2017, the age-standardised mortality rate and DALYs attributable to tobacco use, including any form, decreased by 34% and 41%, respectively, with tobacco smoking having the most contribution. However, the absolute number of deaths and DALYs increased by 39% and 3%, respectively. An increasing rate of deaths and DALYs attributable to tobacco was noted with an increase in age. Non-communicable diseases were responsible for most deaths and disabilities attributable to tobacco use.

CONCLUSION

The prevalence of smoking along with the age-standardised mortality rate and DALYs shows a decreasing trend. However, attention should be made to implement a strong plan to control all forms of tobacco including secondhand exposure.

Disparities in smokeless tobacco use in Bangladesh, India, and Pakistan: Findings from the Global Adult Tobacco Survey, 2014-2017

BACKGROUND

Smokeless tobacco (SLT) use is associated with multiple adverse health effects. It is prominent in Bangladesh, India, and Pakistan, but disparities in use within and across these countries are not well documented or understood. This study assessed the prevalence, patterns, and correlates of SLT use in these three countries.

METHOD

Data came from the Global Adult Tobacco Survey, a household survey of adults aged ≥15 years. Data were collected in 2014 (Pakistan), 2017 (Bangladesh), and India (2016-2017). Current SLT use (nasal or oral use) was defined as reported SLT use daily or less than daily at the time of the survey. Prevalence of both overall and specific SLT types were assessed. Multivariate logistic regression was used to assess correlates of SLT use.

RESULTS

Overall, SLT use among adults ≥15 years of age was 20.6% in Bangladesh, 21.4% in India, and 7.7% in Pakistan, corresponding to 22.0 million SLT users in Bangladesh, 199.4 million in India, and 9.6 million in Pakistan. Among current tobacco users overall, the percentage of those who used SLT was 58.4% (CI: 56.0-60.7) in Bangladesh, 74.7% (CI: 73.4-76.0) in India, and 40.3% (CI: 36.2-44.5) in Pakistan. The most commonly used oral SLT product was Zarda (14.5%) in Bangladesh, Khaini (11.2%) in India, and Naswar (5.1%) in Pakistan. Females had greater odds of SLT use than males in Bangladesh, but lower odds of SLT use than males in India and Pakistan. In all three countries, the odds of SLT use was higher among those 25 years and older, lower education, lower wealth index, and greater exposure to SLT marketing.

CONCLUSION

An estimated 231 million adults aged 15 years or older currently use SLT in Bangladesh, India, and Pakistan, comprising 40.3%-74.7% of overall tobacco product use in these countries. Moreover, marked variations in SLT use exist by population groups. Furthermore, exposure to pro-SLT marketing was found to be associated with higher SLT use compared to non-exposed. It is important that tobacco control strategies address all forms of tobacco product use, including SLT.

White paper on smokeless tobacco & women's health in India

Smokeless tobacco (SLT) use is widespread across many nations and populations, and India shares more than three-quarters of the global burden of SLT consumption. Tobacco use in India has been largely viewed as a male-dominant behaviour. However, evidence from medical, social and behavioural sciences show significant SLT use among women and young girls. This paper highlights key dimensions of SLT use among women in India including prevalence and determinants, the health effects arising from SLT use and cessation behaviours. The paper concludes by providing recommendations with the aim of setting research priorities and policy agenda to achieve a tobacco-free society. The focus on women and girls is essential to achieve the national targets for tobacco control under the National Health Policy, 2017, and Sustainable Development Goals 3 of ensuring healthy lives and promote well-being for all.

The Reasons for Using Smokeless Tobacco: A Review

Background:

Smokeless tobacco use is a public health problem in some parts of the world. The major objective of this study was to investigate the reasons and factors of consumption.

Methods:

A content analysis was conducted on articles for the past thirty years (1989–2019). We reviewed and selected 400 abstracts of original articles from PubMed databases by the search strategy, and reviewed one by one. Among these, 45 abstracts were selected, in which the patterns of use, the reasons for using, and the determinants and predictors were described. Eleven papers were selected based on the results and related to the research objectives. The results of these articles were evaluated precisely word by word and phrase by phrase with content analysis method and inductive approach.

Results:

The reasons for the use of smokeless tobacco fell in two main themes: socio-cultural structure; and, beliefs, each contained Sub-themes such as “culture and living conditions”, “laws”, “family and peer relationships”, “beliefs related to psychological” and “beliefs related to physical influences”, “beliefs”, “The role of harm perceptions “.

Conclusion:

There was a difference between beliefs, cultures and social conditions among the people about using of smokeless tobacco and the association of these factors is investigated in future studies. We also suggest for the prevention and control of smokeless tobacco use, cultural norms and beliefs will need to address adequately.

Tobacco use and betel quid chewing among adults in Myanmar- estimates and social determinants from demographic and health survey, 2015-16

BACKGROUND

National-level prevalence of tobacco use and betel quid chewing, and associated socio-demographic factors were estimated using first-ever, Myanmar Demographic Health Survey, 2015-16.

METHODS

Questions about tobacco smoking, smokeless tobacco use, and betel quid chewing were used to create outcome variables such as tobacco smoking, smokeless tobacco use, and 'dual use' (tobacco use and betel quid chewing). Sex-stratified weighted prevalence rates, distribution by socio-demographic factors were presented. Association of demographic factors with tobacco and/or betel quid chewing was assessed by multinomial logistic regression.

RESULTS

Among men, prevalence (%) of tobacco use and betel quid chewing was 40.9 (95% CI 38.1, 42.1) and 58.9 (95% CI 56.3, 61.6) respectively. Among women tobacco use was 3.7 (95% CI 2.0, 4.3) and betel quid chewing 18.2 (95% CI 16.4, 20.0). Among men prevalence of either tobacco or betel quid and 'dual use' was 50.4 (95% CI 48.5, 52.3) and 25.0 (95% CI 23.1, 26.8) respectively, whereas among women the corresponding rates were 17.9 (95% CI 16.2, 19.6) and 2.0 (95% CI 1.6, 2.9). Smokeless tobacco use was low (< 5%) in both sexes. Tobacco use and/or betel quid chewing was associated with age, wealth, marital status, and occupation in both sexes. However, the effect sizes were much larger among women for wealth groups. People of older age and lower wealth had a higher odds of being a tobacco user and/or betel quid chewer.

CONCLUSIONS

In Myanmar, prevalence of both tobacco use and betel quid chewing was high particularly among men. Tobacco control interventions should be strictly implemented and 'dual use' of both tobacco and betel quid should also be urgently addressed.

Smokeless Tobacco Use in Iran: A Systematic Review

Background

Smokeless tobacco (ST) use is one of the most important public health problems in Southeast Asia. The use of these substances increases the incidence of some cancers and other diseases. The purpose of this review study was to investigate on ST use in Iran.

Methods

A literature search was conducted on PubMed, Google Scholar, and three national databases [Scientific Information Database (SID), IranMedex, and IranDoc] based on the standard search strategy.

Findings

Most consumer people lived in Sistan and Baluchestan Province (Zahedan and Chabahar Cities) and Golestan Province, Iran. ST use rates ranged from 11.0% to 45.7% among college students in Sistan and Baluchestan (Zahedan and Chabahar) and Golestan. There are various types of ST consumed in Iran that have been mentioned in various articles, including Pan, Gutka, Nass, Naswar, Biti, and Supari.

Conclusion

Most studies on ST have been conducted in Sistan and Baluchestan and Golestan Provinces and we need more research for other provinces. Consumption by women is a warning and a threat to women's health in the future. Further studies will be needed to find out more precisely the prevalence of consumption in Iran.

Sex Differences in the Heterogeneous Dynamic Incidence of Oral Cancer: A Comparison between Taiwan and Thailand

Background

This study aims at investigating differences in oral cancer (OC) incidence trends between two populations in Taiwan and Thailand.

Methods

We used the population-based cancer registry data from Taiwan (1979-2016) and Khon Kaen (KK), Thailand (1985-2016). We performed joinpoint analyses to detect the trend change points for the OC incidence and to quantify the time trends in both sexes and regions. Age-period-cohort curves were plotted to explain the incidence trends.

Results

In Taiwan, the estimated annual increases in OC were approximately 6.0% in males, although the increase slowed after 2009, and 2.6% in females. In KK, the OC incidence steadily decreased by -2.5% per year in females, but there was no obvious change in males. A strong period effect observed in those aged 45-69 years in Taiwanese males resulted in a peak incidence in the middle age group. Decreased period and cohort effects were observed in females in KK.

Conclusions

Taiwanese males are the predominant sex affected by OC in Taiwan, and the trend has decelerated since 2009. Age, period, and cohort effects were different between males and females in the two regions.

Periodontal Diseases as Putative Risk Factors for Head and Neck Cancer: Systematic Review and Meta-Analysis

Whether "periodontal disease" can be considered as an independent risk factor for head and neck cancer (HNC) remains controversial. The aim of the current meta-analysis was to quantitatively assess this relationship in order to determine whether this represents a true risk factor, with implications for cancer prevention and management. PubMed, Scopus, and Embase databases were systematically searched. Selective studies were reviewed, and meta-analysis was performed to estimate the pooled odds ratio (OR) with 95% confidence intervals (CIs) on eligible studies using a random effects model. In total, 21 eligible observational studies (4 cohorts and 17 case-controls) were identified for qualitative synthesis after a review of 1051 articles. Significant heterogeneity could be identified in measures utilized for reporting of periodontal disease. Meta-analysis performed on nine studies that employed objective measures for reporting periodontal disease demonstrated a significant association between periodontal disease and HNC [OR 3.17, 95% CI, 1.78-5.64]. A diseased periodontium represents an independent risk marker, and a putative risk factor, for HNC. Prospective studies with standardized measures of periodontal disease severity and extent, integrated with microbiological and host susceptibility facets, are needed to elucidate the mechanisms of this positive association and whether treatment of the former influences the incidence and outcomes for HNC.

COVID-19 in Smokeless Tobacco Habitués: Increased Susceptibility and Transmission

As the coronavirus disease (COVID-19) pandemic continues to sweep across the globe, the world is responding by implementing public awareness campaigns, social distancing measures, and other preventive strategies to arrest the spread of this lethal disease. Infection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exacts a heavy toll on patients with existing comorbidities. Smokeless tobacco (SLT) consumption is of particular concern in countries in South Asia with high population densities, as it facilitates exposure to SARS-CoV-2 within or between communities by the act of public spitting. Salivary droplets generated in this act are a potential threat because they can transmit this airborne infection. Moreover, large gatherings at tobacco retail outlets, frequent hand-to-mouth contact, and sharing of apparatus by SLT habitués could also aid in increasing the spread of SARS-CoV-2. SLT-induced higher expression of angiotensin-converting enzyme 2 receptors along with the presence of furin in the oral mucosa and dysfunctional immune responses among SLT habitués increase viral dissemination and an individual's susceptibility to COVID-19. Issuing rigorous regulations to restrict the use of various forms of SLT products and the obnoxious act of spitting in public can assist in arresting the spread of COVID-19. Widespread education campaigns enlightening the community regarding the adverse effects of SLT consumption and its relationship with COVID-19, along with providing effective assistance to quit for those who are addicted, would decrease the spread of COVID-19.

Prevalence of Consumption of Smokeless Tobacco Products and Exposure to Second-Hand Smoke among Women in the Reproductive Age Group in a Rural Area of Koppal, Karnataka

Background:

Tobacco use is one of the most important causes of death and disease globally. Nearly one-third of the population in India uses tobacco, and smokeless form is culturally acceptable even among women.

Objectives:

(1) To estimate the prevalence of consumption of smokeless tobacco (SLT) products among women in the reproductive age group in the study setting. (2) To determine the various factors associated with the consumption of SLT. (3) To estimate the prevalence of exposure to second-hand smoke among the study participants.

Materials and Methods:

A cross-sectional study was conducted in the field area of primary health center Irkalgad, Koppal in March 2018. A cluster sampling technique was used and a total of 829 women were included. Data were collected using pretested and semi-structured questionnaire and analyzed using the Epi info software version 3.5.4 (Centers for Disease Control and Prevention” (CDC), Atlanta, Georgia, United States of America).

Results:

The prevalence of consumption of SLT products was 17.85%, and the most common product consumed was tobacco with betel quid. Tobacco consumption was found to be significantly associated with age, literacy, marital, and employment status of the study participants.

Conclusion:

The present study concludes that SLT consumption is high among women in the reproductive age group in the study setting and identifies multiple determinants for effective planning of interventions.

Tobacco Smoking and Use of Smokeless Tobacco and Their Association with Psychological Distress and Other Factors in a Rural District in Bangladesh: A Cross-Sectional Study

Background

Tobacco smoking and use of smokeless tobacco are the most preventable cause of death in Bangladesh. The prevalence of psychological distress is increasing globally. This paper reports the smoking status and their association with psychological distress and other factors in a rural district, Narail, of Bangladesh.

Materials and Methods

Data were collected from 2425 adults of age 18–90 years. Smoking status along with sociodemographic characteristics and measures of psychological distress using the Kessler 10-item questionnaire were collected using a face-to-face data collection method.

Results

The crude (age-standardized) prevalence of ever smoking was 27.1 (24.3)% that includes current 25.6 (23.7) and smoker 1.5 (0.6)%, and the prevalence of smokeless tobacco (SLT) was 23.5 (13.4)%. The prevalence of ever smoking was the highest in daily labourers (62.9%) and SLT use was the highest in widowed people (47.2%). After adjustment for covariates, no education (odds ratio (OR): 3.78, 95% confidence interval (CI): 1.57–9.07 for females and OR: 2.69, 95% CI: 1.87–3.87 for males) compared to at least secondary level of education and daily labours (OR: 6.66, 95% CI: 1.67–26.6 for females and OR: 5.12, 95% CI: 1.30–20.19 for males) compared to housework were associated with higher prevalence of ever smoking. Any level of psychological distress, such as mild psychological distress, was associated with at least double the prevalence of tobacco smoking in females (OR: 2.12, 95% CI: 1.67–3.83) but not in males (OR: 1.12, 95% CI: 0.80–1.56). Psychological distress was not associated with SLT use.

Conclusions

Prevalence of both smoking and SLT use was high, particularly in daily labourers, people with no education, and females with psychological distress in rural Bangladesh. Appropriate intervention programs should especially target those of low levels of education and laborious occupations for increasing awareness for the cessation of smoking in rural Bangladesh.

Perception of the risk of tobacco use in pregnancy and factors associated with tobacco use in rural areas of Myanmar

INTRODUCTION

Tobacco use is recognized as the most important preventable risk factor for pregnancy complications and undesirable fetal outcomes. This study examined the reported prevalence of tobacco use among married men and women residing in rural areas, and their knowledge on the risks of tobacco use during pregnancy and the factors associated with tobacco use.

METHODS

A cross-sectional study was conducted within 32 villages in the delta region of Myanmar, randomly selected through multistage sampling procedure by using a pre-tested structured questionnaire during 2016. In all, 617 people participated in the household survey.

RESULTS

About 80% of current smokers (109/128) smoked at home, of whom 16% reported the presence of a pregnant woman in their smoking area. Less than 25% of the respondents were aware of the negative impacts of tobacco use on pregnancy outcomes. Men had significantly lower perceived risk towards smoking on some pregnancy outcomes. Multivariate analysis confirmed the significant influence of male gender (adjusted OR, AOR=12.62; 95% CI: 6.30–25.29) and the age of women <35 years (AOR=3.51; 95% CI: 1.97–6.26) on current tobacco use, when controlling for other variables.

CONCLUSIONS

Men in the study villages and those with a low level of education had poor knowledge on the risks of tobacco on pregnancy outcomes. However, good knowledge and perceived risk of undesirable impacts on pregnancy did not have any influence on tobacco use.

Smokeless Tobacco and Its Adverse Effects on Hematological Parameters: A Cross-Sectional Study

Background

Smokeless tobacco (SLT) as a drug substance has been used throughout the world although it has dangerous effects on human health. Among the 28 known carcinogens in SLT, tobacco-specific nitrosamines are considered to be the most potent. This has challenged the metabolic condition leading to a rise in the inflammatory status, increased apoptosis, and red blood cell (RBC) membrane damage. Therefore, the present study was undertaken to evaluate the adverse effects of SLT on hematological parameters and establish a correlation between them.

Materials and Methods

A total of 100 subjects (50 SLT users and 50 nonusers) were selected for the study. Complete demographic data and history were taken and clinical examination was done to evaluate any oral mucosal changes. Venous blood samples were taken to analyze the hematological parameters.

Results

Significant changes were observed in the complete blood profile in SLT users when compared to nonusers. All the hematological parameters had a negative correlation with form of SLT except for total leucocyte count which had a positive correlation.

Conclusion

The current study confers an imperative role into SLT mediated effects on a complete hemogram and might be beneficial in spreading awareness against its usage. It also serves as a forewarning alarm among the population consuming SLT as an alternative to smoking tobacco.

Improving Utility of Data on Cancer Mortality Risk Associated with Smokeless Tobacco: Recommendations for Future Research

Background:

We analyzed in detail the studies utilized in most recent global systematic review of risk of cancer mortality with smokeless tobacco (SLT) use to report challenges in the available data that limit the understanding of association between SLT use and cancer mortality.

Methods:

For each study, we documented study design, reporting of mortality risk by type of SLT variant, SLT use frequency, and sex of SLT user for oral, oesophageal, pharyngeal, laryngeal and orolaryngeal cancers. These findings are discussed within the context of prevalence of SLT use by geographic regions and sex.

Results:

Majority of studies reported mortality risk for oral (70.6%) followed by oesophageal cancer (38.2%). The availability of population-based evidence was low (35.3%). The geographic distribution of studies did not reflect the geographic distribution of countries with high SLT consumption; 61.8% of the studies were from India followed by Sweden (20.6%). Hospital-based (84.2%) studies reported risk with chewing tobacco and the population-based studies (61.5%) with non-chewing tobacco. Hardly any study reported on a particular type of SLT. Definition of SLT use as current, ever or former was limited without consideration of the wide variations in frequency and duration of use within these patterns. Mortality risk reporting for males dominated all cancers other than oral (50% males).

Conclusions:

Unless the methodological and generalizability challenges identified in this review are addressed in future research to develop a stronger scientific basis of the association of SLT use and cancer mortality, we would continue to face significant challenges in monitoring the health effects of SLT.

A nationally representative study on socio-demographic and geographic correlates, and trends in tobacco use in Nepal

Tobacco control still poses an immense challenge for the government of Nepal. Updated knowledge on the current pattern of tobacco use and its associated factors will be helpful for policy makers to curb the tobacco epidemic. This study fills this gap by, (i) exploring demographic, socio-economic and geographic correlates of current tobacco use using a nationally representative sample of 15-49-year adults from Nepal Demographic Health survey 2016, and (ii) examining the prevalence and trends of both smoking and non-smoking forms of tobacco use in a nationally representative sample of 15-49-year adults drawn from three consecutive Demographic Health Surveys (DHS) between 2006 and 2016.Among males, the prevalence of smokeless tobacco use was higher than that of smoking (40.1% and 27.4% respectively), whereas among females smoking was more common than smokeless tobacco use (prevalence of 5.5% and 3.8% respectively). Both smoking and smokeless tobacco use were associated with older age and lower level of education. Among males, those living in urban areas were more likely to consume any form of tobacco. Residents of terai/plains were more likely to use smokeless tobacco. The concentration curves on cumulative proportion of tobacco use ranked by wealth quintiles showed tobacco use to be highest among the lowest socio-economic groups in both males and females in all three survey years. We found a decreasing trend of tobacco smoking and an increasing trend of smokeless tobacco use over the 10-year period. However, the consumption of both forms of tobacco increased in young males during the same period. Proper monitoring of adherence to directives of the anti-tobacco law should be ensured to curb the increasing burden of tobacco use among young males, and a similar effort is needed to sustain the decline in tobacco uses among other population groups in Nepal.

Prevalence of oromucosal lesions in relation to tobacco habit among a Western Maharashtra population

OBJECTIVES

This study was conducted to determine the number and types of oromucosal lesions (OMLs) in relation to tobacco habits in patients who attended the outpatient department.

METHODOLOGY

A total of 1730 patients visiting the Department of Oral Medicine and Radiology were interviewed and screened for tobacco habits (smoking and smokeless). Clinical oral examination was conducted with diagnostic instruments using the Color Atlas of Common Oral Diseases as a guide for diagnosis. When clinical features were not diagnostic, a biopsy was done.

RESULTS

Of the 1730 outpatients, 975 (56.3% ) individuals used tobacco in one or other forms and 687 (70.4%) of these had OMLs.

CONCLUSION

The results of this study provide important information on the prevalence of OMLs in patients seeking dental care. This provides baseline data for future studies on the prevalence of oral lesions in the general population.

Population-based cancer screening through community participation: Outcome of a district wide oral cancer screening program from rural Kannur, Kerala, India

Background:

Oral cancer is a major public health challenge, and about one-fifth of all oral cancer cases reported globally are from India. In spite of the potential for early detection by simple visual examination, the majority of patients report in later stages of the disease, especially in low and middle-income countries. We report the results from a district level population-based oral cancer screening program.

Methods:

A cross-sectional survey was carried out among people aged >15 years in 48 panchayats of Kannur district in Kerala, India. This comprehensive multi-stakeholder district-wide screening was carried out in six stages including planning, sensitization, recruiting of community volunteers and training, survey, organization of specialist camps and referring to cases to cancer center. The descriptive statistical analysis was performed using EpiData analysis software (Version 2.2.2.180).

Results:

Among the 1,061,088 people in 265,272 houses surveyed, 2507 of them attended the screening camps, and 13 oral cancers and 174 oral precancers were detected. Majority of the oral cancer patients were male (69%), with primary education or illiterate (62%) and low socioeconomic status (61%). Five of the patients diagnosed with early-stage cancer are alive and have good oral health-related quality of life.

Conclusion:

Detection of precancerous and early-stage cancers should be a priority of oral cancer screening programs. The possible key for addressing cancer screening needs of the rural population is to equip the primary health centers in cancer screening activities with available human resources while adapting to local context.

Description of tobacco use and cessation among Bhutanese refugees participating in a tobacco cessation program

OBJECTIVES

To compare the tobacco use, exposure, and cessation differences between Bhutanese refugee and non-Hispanic Caucasian tobacco users in a US federally qualified health center tobacco cessation program.

DESIGN

A retrospective cohort study reviewing data from 374 patients counseled on tobacco cessation was performed. Demographic information, tobacco use history, exposure to tobacco, and type of tobacco used characterized baseline assessments. The patient record was followed forward in time to evaluate tobacco cessation outcomes as the dependent variable. Data were analyzed using odds ratios and the Mann-Whitney U-test.

RESULTS

Data analysis included 318 patients (211 non-Hispanic Caucasian patients and 107 Bhutanese refugee patients). Bhutanese refugees demonstrated a higher likelihood of smokeless tobacco product use than the non-Hispanic Caucasian population (67.3% vs 1%, OR = 214.971, 95% CI 50.429, 916.383), and a greater odds of having household tobacco users (OR = 2.533, 95% CI 1.532, 4.186). Likewise, the non-Hispanic Caucasian population exhibited larger odds of smoking cigarettes vs the Bhutanese population (97.2% vs 26.2%, OR = 96.399, 95% CI 38.449, 241.687), had a higher odds of passive smoke exposure (OR = 12.765, 95% CI 5.36, 30.393), and higher likelihood of a past quit attempt (OR = 9.037, 95% CI 5.180, 15.765). Significant gender differences with regard to type of tobacco used were noted among Bhutanese refugees. Bhutanese refugees demonstrated significantly higher likelihood of tobacco cessation, compared with the non-Hispanic Caucasian population, at all length cutpoints, while showing no difference in number of follow-up visits or median time followed.

CONCLUSION

These culture-specific findings, showing unique tobacco use characteristics and increased cessation among the Bhutanese refugee population, provide novel information helpful to professionals identifying and treating these individuals for tobacco cessation. More research is needed to confirm our results and findings.

Reviewing smokeless tobacco epidemiology, carcinogenesis, and cessation strategy for otolaryngologists

OBJECTIVES/OBJECTIVES

We aimed to provide an otolaryngologist-targeted summary regarding the epidemiology, carcinogenesis, and cessation strategies for smokeless tobacco usage.

STUDY DESIGN

Evidence-based literature review.

METHODS

We reviewed the current evidence-based literature concerning trends in smokeless tobacco use, associations with neoplastic change, and therapeutic interventions to assist with sustained abstinence. In complement, we present an actual case of laryngeal squamous cell carcinoma in the setting of chronic tobacco-dentifrice usage in a lifelong nonsmoker.

RESULTS

This report provides a synopsis of epidemiological data and evidence-based recommendations for general, pharmaceutical, and behavioral cessation strategies.

CONCLUSIONS

Smokeless tobacco use continues to be prevalent among patients seen by otolaryngologists, particularly of various Indian and Southeast Asian descent. The data presented in this article will aid in the identification of at risk patients. The provided recommended cessation strategies will tool otolaryngologists for patient counseling and management, ultimately aimed at improving health outcomes. Laryngoscope, 128:2067-2071, 2018.

Adverse Health Effects of Betel Quid and the Risk of Oral and Pharyngeal Cancers

Global reports estimate 600 million betel quid (BQ) chewers. BQ chewing has been demonstrated not only to be a risk factor for cancers of the oral cavity and pharynx and oral potentially malignant disorders (OPMD) but also to cause other cancers and adverse health effects. Herein, we summarized the international comparison data to aid in the understanding of the close relationship between the prevalence of BQ chewing, the occurrence of oral and pharyngeal cancers, and adverse health effects. Potential biomarkers of BQ carcinogens, such as areca nut, alkaloids, and 3-methylnitrosaminopropionitrile (MNPN), are closely associated with human health toxicology. Molecular mechanisms or pathways involving autophagy, hypoxia, COX-2, NF-κB activity, and stemness are known to be induced by BQ ingredients and are very closely related to the carcinogenesis of cancers of oral and pharynx. BQ abuse-related monoamine oxidase (MAO) gene was associated with the occurrence and progress of oral and pharyngeal cancers. In summary, our review article provides important insights into the potential roles of environmental BQ (specific alkaloid biomarkers and nitrosamine products MNPN) and genetic factors (MAO) and offers a basis for studies aiming to reduce or eliminate BQ-related OPMD and oral/pharyngeal cancer incidences in the future.

A Policy Perspective on the Global Use of Smokeless Tobacco

Background

Globally, over 300 million people consume diverse smokeless tobacco (ST) products. They are addictive, cause cancer, increased cardiovascular mortality risks and poor pregnancy outcomes.

Purpose of Review

To identify gaps in implementing key ST demand-reduction measures, focused literature reviews were conducted and findings synthesized according to relevant WHO Framework Convention on Tobacco Control (FCTC) Articles.

Recent Findings

The literature supports implementation of ST demand-reduction measures. For taxation, labelling and packaging, most administrations have weaker policies for ST than cigarettes. Capacity to regulate ST contents and offer cessation support is lacking. There is poor compliance with bans on ST advertising, promotion and sponsorship.

Summary

The literature on implementation of WHO FCTC for ST is limited. Although strengths of ST demand-control activities are currently identifiable from available literature, full implementation of FCTC is lacking. A wider evidence-based response to WHO FCTC is proposed, particularly for countries facing the greatest disease burdens.

Smokeless Tobacco: Profiling Sachets and Pattern of Use among Low Socioeconomic Population of Puducherry

BACKGROUND

Tobacco consumption is highest among labor classes and low socioeconomic status (SES), with inclination toward smokeless tobacco (SLT).

AIM

The aim of the study was to determine the prevalence and pattern of SLT consumption with secondary objective to profile various sachets of SLT most commonly sold in the study setting.

SETTING AND DESIGN

A cross-sectional questionnaire study conducted in rural Puducherry.

MATERIALS AND METHODS

A self-interviewed structured questionnaire was administered to 150 participants from two villages. Data on education, occupation, and income were collected with details in the form of tobacco consumed, duration of habit, daily consumption, and brand of SLT among other things. Profiling of sachets was done with manufacturing date, date of expiry, presence and absence of warning signs, and name of the manufacturer as parameter.

STATISTICAL ANALYSIS

Descriptive analysis was done for frequency distribution and Chi-square test for proportions.

RESULTS

The overall prevalence of SLT was 44% with women consuming more than males. 41-50-year-old were highest users of SLT. More than 50% of the participants were unaware of the "pictorial warnings" and 65% did not know about the presence of "contents" on sachets. Pan masala with tobacco was the most preferred form. Only 5 of the 23 commercial brands of sachets had both "pictorial and readable warnings" printed.

CONCLUSION

The prevalence of STC was high when compared to the general population. Steps need to be taken to address the adverse effects printed on sachets for low SES populations. The printed warnings need to be inspected regularly. Dual tobacco use is a new addition to the existing list of challenges.

Psychology of tobacco use: Are anti-tobacco policies encouraging the use of smokeless tobacco? A cross-sectional study in an industrial township

BACKGROUND

Anti-tobacco policies are focused on curbing smoking. Less attention is given to the use of smokeless tobacco use. This raises the concern whether these policies lead to increased use of smokeless tobacco use. The present study addresses this issue.

MATERIALS AND METHODS

A stratified random sample of 399 participants over 18 years and both genders were part of this cross-sectional study. They included an interview of urban and rural residents by house-to-house survey including outpatients, inpatients, and college students. Information was collected by face-to-face interview on a standard instrument for recording tobacco use. Additional questions were added to elicit switch from smoking to smokeless forms of tobacco. In-depth interviews were also held with some tobacco vendors.

STATISTICAL ANALYSIS

Data were summarized in percentages and with mean and standard deviation. Chi-square and two sample t-tests were used to explore associations.

RESULTS

Prevalence of smokeless tobacco use was 36.59% (95% confidence interval: 31.97%-41.41%). Smokeless tobacco use was highest in rural community at 60.20% compared to urban community in which it was 40%. Unskilled workers had the highest prevalence of smokeless tobacco use at 48.57% compared to lowest prevalence among professionals (12.50%). Years of schooling was inversely related to both smoking and smokeless tobacco use. Prevalence of smoking at 20.55% was much less than use of smokeless tobacco use. Awareness of adverse health effects and ban in public places were the main reasons for quitting smoking. About 10% of those who quitted smoking took smokeless tobacco.

CONCLUSION

There was a tendency among tobacco users to switch over to smokeless tobacco use due to awareness of health effects and ban on smoking in public places. A much higher prevalence of smokeless tobacco use compared to smoking suggests that the problem of smokeless tobacco use is receiving less attention from policymakers vis-à -vis smoking control policies.

An Examination of Stroke Risk and Burden in South Asians

BACKGROUND

South Asians (India, Pakistan, Sri Lanka, Bangladesh, Nepal, and Bhutan) are at a disproportionately higher risk of stroke and heart disease due to their cardiometabolic profile. Despite evidence for a strong association between diabetes and stroke, and growing stroke risk in this ethnic minority-notwithstanding reports of higher stroke mortality irrespective of country of residence-the explanation for the excess risk of stroke remains unknown.

METHODS

We have used extensive literature review, epidemiologic studies, morbidity and mortality records, and expert opinions to examine the burden of stroke among South Asians, and the risk factors identified thus far.

RESULTS

We summarize existing evidence and indicate gaps in current knowledge of stroke epidemiology among South Asian natives and immigrants.

CONCLUSIONS

This research focuses attention on a looming epidemic of stroke mainly due to modifiable risk factors, but also new determinants that might aggravate the effect of vascular risk factors in South Asians causing more disabling strokes and death.

Prevalence, pattern and sociodemographic differentials in smokeless tobacco consumption in Bangladesh: evidence from a population-based cross-sectional study in Chakaria

BACKGROUND

The health hazards associated with the use of smokeless tobacco (SLT) are similar to those of smoking. However, unlike smoking, limited initiatives have been taken to control the use of SLT, despite its widespread use in South and Southeast Asian countries including Bangladesh. It is therefore important to examine the prevalence of SLT use and its social determinants for designing appropriate strategies and programmes to control its use.

OBJECTIVE

To investigate the use of SLT in terms of prevalence, pattern and sociodemographic differentials in a rural area of Bangladesh.

DESIGN

Population-based cross-sectional household survey.

SETTING AND PARTICIPANTS

A total of 6178 individuals aged ≥13 years from 1753 households under the Chakaria HDSS area were interviewed during October-November 2011.

METHODS

The current use of SLT, namely sadapatha (dried tobacco leaves) and zarda (industrially processed leaves), was used as the outcome variable. The crude and net associations between the sociodemographic characteristics of respondents and the outcome variables were examined using cross-tabular and multivariable logistic regression analysis, respectively.

RESULTS

23% of the total respondents (men: 27.0%, women: 19.3%) used any form of SLT. Of the respondents, 10.4% used only sadapatha,13.6% used only zarda and 2.2% used both. SLT use was significantly higher among men, older people, illiterate, ever married, day labourers and relatively poorer respondents. The odds of being a sadapatha user were 3.5-fold greater for women than for men and the odds of being a zarda user were 3.6-fold greater for men than for women.

CONCLUSIONS

The prevalence of SLT use was high in the study area and was higher among socioeconomically disadvantaged groups. The limitation of the existing regulatory measures for controlling the use of non-industrial SLT products should be understood and discussion for developing new strategies should be a priority.

Educational and wealth inequalities in tobacco use among men and women in 54 low-income and middle-income countries

BACKGROUND

Socioeconomic differentials of tobacco smoking in high-income countries are well described. However, studies to support health policies and place monitoring systems to tackle socioeconomic inequalities in smoking and smokeless tobacco use common in low-and-middle-income countries (LMICs) are seldom reported. We aimed to describe, sex-wise, educational and wealth-related inequalities in tobacco use in LMICs.

METHODS

We analysed Demographic and Health Survey data on tobacco use collected from large nationally representative samples of men and women in 54 LMICs. We estimated the weighted prevalence of any current tobacco use (including smokeless tobacco) in each country for 4 educational groups and 4 wealth groups. We calculated absolute and relative measures of inequality, that is, the slope index of inequality (SII) and relative index of inequality (RII), which take into account the distribution of prevalence across all education and wealth groups and account for population size. We also calculated the aggregate SII and RII for low-income (LIC), lower-middle-income (lMIC) and upper-middle-income (uMIC) countries as per World Bank classification.

FINDINGS

Male tobacco use was highest in Bangladesh (70.3%) and lowest in Sao Tome (7.4%), whereas female tobacco use was highest in Madagascar (21%) and lowest in Tajikistan (0.22%). Among men, educational inequalities varied widely between countries, but aggregate RII and SII showed an inverse trend by country wealth groups. RII was 3.61 (95% CI 2.83 to 4.61) in LICs, 1.99 (95% CI 1.66 to 2.38) in lMIC and 1.82 (95% CI 1.24 to 2.67) in uMIC. Wealth inequalities among men varied less between countries, but RII and SII showed an inverse pattern where RII was 2.43 (95% CI 2.05 to 2.88) in LICs, 1.84 (95% CI 1.54 to 2.21) in lMICs and 1.67 (95% CI 1.15 to 2.42) in uMICs. For educational inequalities among women, the RII varied much more than SII varied between the countries, and the aggregate RII was 14.49 (95% CI 8.87 to 23.68) in LICs, 3.05 (95% CI 1.44 to 6.47) in lMIC and 1.58 (95% CI 0.33 to 7.56) in uMIC. Wealth inequalities among women showed a pattern similar to that of men: the RII was 5.88 (95% CI 3.91 to 8.85) in LICs, 1.76 (95% CI 0.80 to 3.85) in lMIC and 0.39 (95% CI 0.09 to 1.64) in uMIC. In contrast to men, among women, the SII was pro-rich (higher smoking among the more advantaged) in 13 of the 52 countries (7 of 23 lMIC and 5 of 7 uMIC).

INTERPRETATION

Our results confirm that socioeconomic inequalities tobacco use exist in LMIC, varied widely between the countries and were much wider in the lowest income countries. These findings are important for better understanding and tackling of socioeconomic inequalities in health in LMIC.

Prevalence of oral ulcers and its association with addictions in rural population of western Uttar Pradesh and eastern Rajasthan

BACKGROUND

Head and neck cancer in Indian perspective predominantly relates to tobacco use. The present study explores the prevalence of oral ulcers and its association with addictions among the population of Uttar Pradesh and Rajasthan, India.

METHODOLOGY

The screening method in early detection of head and neck cancer is broadly symptom based. 1399 subjects from Uttar Pradesh and Rajasthan were screened by trained personnel between April and June 2015.

RESULTS

Study findings showed, mouth ulcers and trismus were common symptoms and tobacco chewing and smoking were common addictions. There were statistically significant associations among the symptoms and addictions as well as predominance in rural populations. The majority of smokers (27.1%) belonged to age ≥55 years whereas the tobacco chewers (29.2%) and alcohol abusers (45.8%) in the age group 25-34 years. Also the risk of developing mouth ulcers and trismus in this area are approximately 35 (MRR: 35.7, 95% CI: 15.5-81.9) and nearly eight (MRR: 7.7, 95% CI: 2.2-26.6) times higher respectively in males. However, joint use of smoked and smokeless tobacco increases nearly three times more risk of either mouth ulcers or trismus.

CONCLUSION

Male individuals are more exposed to certain addictions such as tobacco (smoked and smokeless) and alcohol. The prevalence of oral ulcers is primarily associated with the addictions. Therefore, these persons are more at risk of further developing head neck cancer. A large level community screening and awareness are required especially among the rural population of India.

Smokeless tobacco and oral potentially malignant disorders in South Asia: a protocol for a systematic review

INTRODUCTION

Oral potentially malignant disorders (OPMDs) are chronic lesions or conditions characterized by a potential for malignant transformation. Apart from being possible pre-cursors to oral cancer, OPMDs themselves are usually painful and debilitating conditions having an influence on the quality of life, both in terms of pain and social disability. Smokeless tobacco (SLT) use is considered a major risk factor for OPMDs. SLT use is a culturally and socially acceptable habit in South Asia. According to a recent report, 90 % of the SLT burden of the whole world lies in the South Asian countries of Pakistan, India, Sri Lanka, Bangladesh, Bhutan, Nepal, Afghanistan, and Maldives. This review aims to assess the association between the use of various SLT products in South Asia and risk of OPMDs.

METHODS

This review will focus on epidemiological studies on the use of SLT and risk modification for OPMDs, which have been carried out in the human population of South Asian countries. Articles reporting estimates of relative risk, e.g., odds ratio (OR) or relative risk (RR) with their 95 % confidence intervals (CI) for SLT users versus non-users. Articles reporting data from which these effect estimates can be computed will be included in the review. We will search MEDLINE, the Science Citation Index (SCI), Scopus, and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases for relevant literature using a combination of keywords and MeSH terms, where applicable. Appropriate sources of gray literature will also be included in the search. The electronic searches will be supplemented by a hand search of the bibliographies of the included articles. The included studies will be assessed for their quality using an established quality assessment tool. All relevant data from the included articles will be recorded in an MS Excel spread sheet and then transferred to Rev Man 5.3 to carry out a meta-analysis. Heterogeneity among the estimates will be assessed through the I (2) statistic. Sensitivity and subgroup analysis will be carried out to see the effects of individual or group of studies on the pooled effect estimate. Results of the review will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.

DISCUSSION

This review may have a potential limitation with regard to the designs of the studies included as we expect that most of the included studies will be of the observational types. We will however try to address this issue by conducting sensitivity and subgroup analysis of similar quality studies.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42015029705 .

Tobacco Consumption Among HIV-Positive Respondents: Findings From the Third Round of the National Family Health Survey

INTRODUCTION

HIV-positive people are often more susceptible to illnesses associated with smoking, for example, cardiovascular disease, than those in the general population. The purpose of this article is to examine the association between tobacco use and HIV-status in India.

METHODS

This article analyzed data from the National Family Health Survey III, which provides a representative sample of the Indian population. Patterns in tobacco consumption among HIV-positive and negative respondents were assessed through logistic and ordinal regression models. Associations between smoking, asthma, and tuberculosis were examined through bivariate logistic regressions.

RESULTS

A greater percentage of male HIV-positive participants (68%) reported current tobacco use in comparison to male HIV-negative respondents (58%) and female HIV-positive (12%) and negative (11%) participants. Multivariable logistic regression analyses revealed that there was a positive correlation between male respondents' HIV-status and their propensity to use tobacco (odds ratio [OR] = 1.48, confidence interval [CI] = 1.05-2.1, P < .05) when controlled for extraneous variables. Results from ordinal regression analyses illustrated that male HIV-positive respondents had a twofold increased OR of smoking 20 or more cigarettes (OR = 2.1, CI = 1.4-3.2, P < .005). Finally, there was a positive association between being HIV-infected (adjusted odds ratio [AOR] = 4.6, CI = 2.02-10.6, P < .005), smoking 15-19 cigarettes (AOR = 2.11, CI = 1.1-4.1, P < .05) and male participants' TB-status.

CONCLUSIONS

Results in this article suggest HIV-positive men in India were not only significantly more likely to consume tobacco, but they also smoked a higher number of cigarettes compared to their HIV-negative counterparts. This is a cause for concern as our analyses revealed a possible association between the number of cigarettes smoked and TB-status.

IMPLICATIONS

This article contributes to knowledge on the intertwining epidemics of HIV and smoking through using cross-sectional data from the National Family Survey III to demonstrate that HIV-positive men in India display patterns of tobacco consumption which differs to that of HIV-negative men. These findings could have strong implications for long-term treatment of HIV-positive patients as smoking has been proven to increase the likelihood of contracting HIV-related illnesses.

Patterns of Use and Perceptions of Harm of Smokeless Tobacco in Navi Mumbai, India and Dhaka, Bangladesh

Background:

Globally, smokeless tobacco use is disproportionately concentrated in low-income and middle-income countries like India and Bangladesh.

Objectives:

The current study examined comparative patterns of use and perceptions of harm for different smokeless tobacco products among adults and youth in Navi Mumbai, India, and Dhaka, Bangladesh.

Methods:

Face-to-face interviews were conducted on tablets with adult (19 years and older) smokeless tobacco users and youth (16–18 years) users and non-users in Navi Mumbai (n = 1002), and Dhaka (n = 1081).

Results:

A majority (88.9%) of smokeless tobacco users reported daily use. Approximately one-fifth (20.4%) of the sample were mixed-users (used both smoked and smokeless tobacco), of which about half (54.4%) reported that they primarily used smokeless over smoked forms like cigarettes or bidis. The proportion of users planning to quit was higher in India than in Bangladesh (75.7% vs. 49.8%, p < 0.001). Gutkha was the most commonly used smokeless product in India, and pan masala in Bangladesh. Among users in Bangladesh, the most commonly reported reason for using their usual product was the belief that it was “less harmful” than other types. Perceptions of harm also differed with respect to a respondent's usual product. Bangladeshi respondents reported more negative attitudes toward smokeless tobacco compared to Indian respondents.

Conclusions:

The findings highlight the high daily use of smokeless tobacco, and the high prevalence of false beliefs about its harms. This set of findings reinforces the need to implement effective tobacco control strategies in low and middle-income countries like India and Bangladesh.

Smokeless tobacco use in Urban Indian women: Prevalence and predictors

Context:

India is the second largest consumer of tobacco. Tobacco consumption in nonsmoking forms is culturally accepted even among women.

Aims:

This study aimed at understanding the patterns and predictors of smokeless tobacco (SLT) use among the urban low-socioeconomic women in Mumbai, India.

Materials and Methods:

This is a cross-sectional community-based survey of tobacco usage among women residing in seven low-socioeconomic communities in suburbs of Mumbai, India. Staff for the study was recruited, trained, clusters selected, accurately mapped, households identified, meetings held with community leaders, and household surveys conducted. Women using tobacco were invited to participate in the detailed survey and interviewed to document the various sociodemographic factors and in depth information on tobacco use. The data were computerized and analyzed.

Results:

About 22.30% of the total female population consumed tobacco, mainly in the smokeless forms, with only 0.50% of the tobacco users using smoked tobacco. Masheri was the most common form of tobacco used, followed by chewing tobacco. The median frequency of use of different tobacco products varied from 2 to 4 per day. The mean age at initiation of tobacco was 26.23 years. According to the results of univariate and multivariate logistic regression analysis, illiterate women, with advancing age, belonging to Hindu, Muslim, or Buddhist communities, who were either manual laborers or housewives, divorced or separated, and speaking Marathi were at higher risk of being tobacco user.

Conclusion:

Patterns and predictors of SLT use among women have been identified in the present study. This will guide in planning prevention and control strategies.

Early pregnancy B vitamin status, one carbon metabolism, pregnancy outcome and child development

Periconception supplementation with folic acid is recommended until 12 gestational weeks to prevent neural tube defects. Doses of folic acid contained in supplements and timing and length of use during pregnancy vary. The effects of status in periconception and pregnancy folate, cobalamin, betaine and their interactions on one carbon metabolism (1C), as well as the global effect of 1C on foetal growth and pregnancy outcome, are reviewed. Results from prospective studies are reviewed. Cessation of folic acid supplement use after the first trimester is associated with a sharp drop in plasma folate status and enhanced conversion of betaine to dimethylglycine. Dimethylglycine production is also higher in mothers with low folate status than in those with normal-high folate status. The effects of high doses of folic acid on one carbon metabolism in mothers with low early pregnancy cobalamin status and on foetal growth are also reviewed. Several studies report that moderately elevated early pregnancy fasting plasma total homocysteine (tHcy) is inversely associated with birth weight and a predictor of intrauterine growth retardation. There is also evidence for increased risk of preterm birth when maternal folate status is low.