Concurrent Alcohol Use and Waterpipe Tobacco Smoking: Smoking Topography, Toxicant Exposure, and Abuse Liability

Biomarkers of Waterpipe Tobacco Smoke Exposure: A Systematic Review and Meta-Analysis

INTRODUCTION

The prevalence of waterpipe tobacco smoking is increasing globally. Biomarkers of waterpipe tobacco smoke (WTS) exposure are less studied.

AIMS AND METHODS

To identify the types of biomarkers of WTS exposure and estimate changes in biomarker concentrations pre- to post-WTS exposure. PubMed, Embase, Web of Science, CINAHL Plus, PsycINFO, and Cochrane Library were searched for studies up to April 24, 2023. The types of biomarkers were identified. Random-effects models were used to estimate changes in biomarker concentrations pre- to post-WTS exposure.

RESULTS

Seventy-three studies involving 3755 participants exposed to WTS (49% male, mean age: 24.8 years) and 11 types of biomarkers of WTS exposure were identified. The biomarkers included tobacco alkaloids, expired carbon monoxide (eCO), carboxyhemoglobin (COHb), tobacco-specific nitrosamines, volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), heavy metals, unmetabolized VOCs, unmetabolized PAHs, furan metabolites, and heterocyclic aromatic amines. Compared with pre-WTS exposure, eCO (breath; mean difference [MD] 27.00 ppm; 95% confidence interval [CI]: 20.91 to 33.08), COHb (blood; MD 4.30%; 95%CI: 2.57 to 6.03), COHb (breath; MD 7.14%; 95%CI: 4.96 to 9.31), nicotine (blood; MD 8.23 ng/mL; 95%CI: 6.27 to 10.19), and cotinine (urine; MD 110.40 ng/mL; 95%CI: 46.26 to 174.54) significantly increased post-WTS exposure.

CONCLUSIONS

Biomarkers of WTS exposure were systematically identified. The similarity between the biomarkers of WTS exposure and those of cigarette smoke and higher concentrations of some biomarkers post-WTS exposure underscore the need for further research on applying biomarkers in surveillance, interventions, and regulations to mitigate the harms of waterpipe tobacco smoking.

IMPLICATIONS

This study provides the first comprehensive overview of biomarkers investigated and available for assessing WTS exposure and their concentration changes in the human body. Researchers can use biomarkers such as eCO, COHb, nicotine, and cotinine to measure the health risks associated with WTS exposure and objectively evaluate the effectiveness of public health interventions aimed at reducing waterpipe tobacco smoking. Public health policymaking can also be informed through increased biomarker concentrations following WTS exposure, to implement regulations and public health education campaigns on limiting or preventing waterpipe tobacco smoking.

Exploring the Presence and Type of Premium Cigar Retailers With Neighborhood Sociodemographic Correlates in the United States, 2019-2021

INTRODUCTION

Little is known about the location and store type of premium cigar retailers in the United States. Different store types may expose people to secondhand smoke (eg, cigar bar or lounge) and may also have age restrictions (eg, tobacco shops) that could reduce youth exposure to products and marketing.

AIMS AND METHODS

We obtained a national retailer dataset from the Premium Cigar Association (PCA) from 2019 to 2021. We coded store type using nine categories and used generalized estimating equations to examine associations between census tract sociodemographic characteristics and PCA store type.

RESULTS

Of the 1279 PCA retailers, the majority were cigar stores (39%), followed by tobacco shops (26%), cigar bars or lounges (20%), and beer, wine, or liquor stores (15%). Overall, there were no statistically significant associations between tract-level sociodemographic characteristics and the odds that a retailer was a specific store type versus another store type. However, PCA retailers located in tracts with a higher percentage of non-Hispanic Black residents were associated with 1.12 times the odds of being a cigar bar or lounge versus another type (95% CI, 1.02 to 1.22).

CONCLUSIONS

The majority of PCA retailers are specialty cigar stores or cigar bars or lounges, and few are more traditional tobacco retailers, such as convenience stores. We document a higher odds of a store being a cigar bar or lounge for retailers located in neighborhoods with a higher proportion of Black residents, which may contribute to inequities in tobacco-related disease and disability because of potentially greater secondhand smoke exposure.

IMPLICATIONS

Specialized retailers account for most premium cigar stores. One in five PCA retailers was a cigar bar or lounge, which raises public health concerns around exposure to secondhand smoke for patrons and employees. Local jurisdictions should examine zoning ordinances in tandem with sociodemographic characteristics to ensure inequities in the location of cigar bars or lounges are not produced or sustained given the potential harms associated with secondhand smoke exposure.

Prevalence and predictors of waterpipe smoking cessation among young adults in the US: Findings from a population-based study

BACKGROUND

The prevalence of waterpipe tobacco (WPT) smoking is 9.2 % among young adults aged 18-24 years in the United State (US). Adequate understanding of the factors predicting WPT smoking cessation among the young population is essential to tobacco control efforts. This study assessed the prevalence and predictors of WPT smoking cessation among young adults.

METHODS

The population assessment of tobacco and health (PATH) study data (waves 1-5) was used for the study. A total sample of 561 young adults exclusively using WPT (past 30-days) was used for the analysis. The probability of WPT smoking cessation (no use in the past 12 months) was estimated using the Kaplan-Meier survival method, and the predictors were assessed using the Cox proportional hazards regression model.

RESULTS

During the five waves, 25.1 % of the young adult WPT smokers quit smoking. Among them, 58.2 % were females and the remaining 41.8 % were males. The Hispanics (40.2 %) had the highest rate of cessation among the ethnic groups. Regret smoking (adjusted hazard ratio (aHR) = 2.33, 95 % confidence interval (CI) = 1.24-4.36), smoking restriction at home (aHR = 2.86, 95 % CI = 1.41-5.88), and living in Midwest geographical region (aHR = 2.11, 95 % CI = 1.16-3.84) increased the likelihood whereas alcohol use (aHR = 0.62, 95 % CI = 0.41-0.93) decreased the likelihood of cessation among the young adult WPT smokers.

CONCLUSIONS

Communicating the health and economic consequences associated with WPT smoking (e.g., pictorial health warning labels), involving smoker's household members in WPT awareness campaigns, and closing regulatory loopholes related to WPT venues will increase the WPT smoking cessation rate among the young population in the US.

The CHRNA5 Polymorphism (rs16969968) and its Association with Waterpipe Smoking Addiction among Jordanians

Waterpipe smoking is a form of tobacco use that causes nicotine/tobacco dependence and has become a global health problem. In the current study, the association of rs16969968 SNP in the CHRNA5 gene with waterpipe dependence was investigated. A total of 386 men and women who used a waterpipe to smoke tobacco were recruited and divided into less dependent and more dependent smokers based on their score on the Lebanon Waterpipe Dependence Scale (LWDS). Results showed a significant difference in the distribution of GG, GA, and AA genotypes by waterpipe dependence status (P<0.001). The more dependent group showed a higher frequency of the AA genotype than the less dependent smokers' group (38% versus 23% respectively). In addition, the more dependent smokers exhibited more A allele than less dependent smokers (53% versus 37% respectively, P<0.001). In conclusion, there is an association between the rs16969968 SNP and waterpipe dependence as assessed by the LWDS.

Arabian nights in Hong Kong: Chinese young adults' experience of waterpipe smoking

BACKGROUND

Waterpipe smoking (WPS) has increased among young adults who may be oblivious to its harmful effects. We explored Chinese young adults' experiences of using waterpipes.

METHODS

Semi-structured interviews with 49 Chinese young adults aged between 18 to 30 years who had smoked waterpipes in the past 30 days were undertaken between May and October 2019. We analysed transcripts using interpretive description that includes an inductive analytical approach and constant comparison strategy.

RESULTS

Six themes on the WPS experience emerged: fostering social connections on weekend nights; bars as a natural setting for waterpipe smoking; providing pleasure; securing social status among young females; growing acceptance and a lack of education; lack of regulation on waterpipe smoking.

CONCLUSIONS

We provide the first evidence regarding Chinese young adults' WPS use. Policy measures to de-normalise false perceptions of WPS are urgently needed to deter use among young adults.

Impact of flavors and humectants on waterpipe tobacco smoking topography, subjective effects, toxicant exposure and intentions for continued use

INTRODUCTION

The present study examined how the lack of characterising flavours and low levels of humectants may affect users' waterpipe tobacco (WT) smoking topography, subjective effects, toxicant exposure and intentions for continued use.

METHODS

89 WT smokers completed four ad libitum smoking sessions (characterising flavor/high humectant (+F+H); characterising flavor/low humectant (+F-H); no characterising flavor/high humectant (-F+H); no characterising flavor/low humectant (-F-H)) in a randomised cross-over design. WT was commercially available; same brand but nicotine levels were not held constant. A subsample (n=50) completed a standardised, 10-puff session preceding ad libitum smoking. Participants completed questionnaires, exhaled carbon monoxide (eCO) testing and provided blood samples for plasma nicotine. Smoking topography was measured throughout the session. Post hoc analyses showed that -F+H and -F-H did not differ significantly in humectant levels. Therefore, these groups were collapsed in analyses (-F-H).

RESULTS

WT smokers reported significantly greater satisfaction, liking, enjoyment and greater intentions for continued use when smoking +F+H compared with other WT products, with -F-H receiving the lowest ratings. Significant differences in topography were observed during standardised and ad libitum sessions, with the -F-H preparation leading to greater total inhaled volume and eCO boost, but lower nicotine boost compared with +F+H (all p<0.05).

DISCUSSION

The findings demonstrate the importance of flavours and humectants on improving WT smoking experience and increasing the likelihood that users will want to initiate and continue smoking. Moreover, it demonstrates that flavours and humectants influence smoking behaviour and toxicant exposure in some unexpected ways that are important for regulatory efforts.

Use of Rideshare Services to Increase Participant Recruitment and Retention in Research: Participant Perspectives

BACKGROUND

Recruitment and retention of participants are important factors in empirical studies. Methods that increase recruitment and retention can reduce costs and burden on researchers related to the need for over-recruitment because of attrition. Rideshare services such as Uber and Lyft are a potential means for decreasing this burden.

OBJECTIVE

This study aimed to understand the role rideshare utilization plays in participant recruitment and retention in research trials.

METHODS

Data are presented for a study (N=42) in which rideshare services were utilized for participant transportation to and from study visits during a 2-session, in-laboratory research study.

RESULTS

Retention at visit 2 was greater than 95% (42/44) in the initial study. In a follow-up survey of the participants from the original trial, participants (N=32) reported that the rideshare service was an important reason they returned for all study visits. Participants reported whether they would prefer differing levels of additional monetary compensation or a ride from a rideshare service. When the additional compensation was less than US $15, participants reported a preference for the rideshare service.

CONCLUSIONS

Rideshare services may represent a relatively low cost means for increasing study retention. Specifically, findings indicate that rideshare services may not be crucial for initial participant recruitment but for their retention in multi-visit studies.