Smoking Risk Research Articles

Association between body mass index (BMI), respiratory symptoms, and asthma prevalence among the population in Khulna City, Bangladesh: an in-depth cross-sectional investigation

BackgroundAsthma, a chronic respiratory disease, has been steadily increasing in prevalence and significantly impacts global health. In Bangladesh, it remains a major public health concern. The relationship between asthma and body mass index (BMI) is complex, with higher rates observed among overweight individuals. This study aims to explore the association between BMI, respiratory symptoms, and asthma in Khulna City, Bangladesh, addressing the lack of comprehensive data for this region.MethodsThis study was a cross-sectional study. For data collection purposes, we considered Khulna Medical College and Hospital (KMC). Data collection involved a well-structured questionnaire during in-person meetings held from September 18 to November 6, 2022. We selected a total of 310 participants through simple random sampling and performed statistical analyses, including chi-square tests and logistic regression, to examine associations.ResultsThe majority of participants were aged above 60 years (36.5%), with most having a normal BMI (74.8%) and being male (69.0%). We found significant associations between the prevalence of asthma, age, BMI categories, and respiratory symptoms such as wheezing, coughing, chest tightness, and shortness of breath. Overweight individuals showed a higher likelihood of developing asthma (AOR 7.01; 95% CI 5.04–7.11), as did those with primary education (AOR 1.51; 95% CI 1.11–2.95) and smokers (AOR 2.80; 95% CI 1.27–6.15).ConclusionThis study identifies a higher asthma prevalence in Khulna City, associated with older age, overweight status, primary education level, and respiratory symptoms such as wheezing, coughing, chest tightness, and shortness of breath. Smoking further exacerbates the severity of the condition. We recommend public health strategies such as promoting healthier lifestyles, improving healthcare access, raising awareness about smoking risks, enhancing air quality, and establishing specialised asthma clinics for effective management and improved quality of life.

An Exploration of the Barriers and Facilitators Shaping Vaping Cessation Among Australian Young Adults

This study of 18–24-year-old young adults (YAs) in Australia who use, or used to use, nicotine vape products (NVPs) sought to explore their experiences when attempting to quit vaping to understand the barriers and identify facilitators of cessation. We analysed data from a survey (n = 532) of 422 YAs who vape and 110 YAs who used to vape, as well as interactive workshops (n = 12) and semi-structured interviews (n = 3), which included 7 YAs using and 8 no longer using NVPs. Social Cognitive Theory informed the data collection, with open-ended questions exploring how personal, environmental and behavioural factors shaped vaping cessation. Qualitative analyses revealed 11 themes shaping vaping cessation, including the normalisation of vaping, easy access and a desire to fit in. Vaping cessation was complicated by using NVPs to manage symptoms of mental ill-health. Additionally, former vapers reported using combustibles to replace vaping, highlighting the risk of health impacts from smoking. Potential support sources included friends and general practitioners, or family doctors. Support service development must consider de-normalising vaping, addressing underlying mental health issues and providing effective campaigns around the health risks of vaping and smoking. The findings highlight the need to invest in vaping cessation, and they can inform the design of vaping cessation programs to better support those trying to quit and ensure the success of their quit attempts.

Burden of Ischemic Heart Diseases among US States from 1990-2019.

Ischemic Heart Disease (IHD) is a leading cause of global mortality, including in the United States. Understanding the burden of IHD in the United States is crucial for informed decision-making and targeted interventions aimed at reducing morbidity and mortality associated with this leading cause of death. This study aimed to understand the burden of IHD, identify gender disparities and risk factors, explore the relationship between socioeconomic growth and IHD, and analyze risk factor distribution across the states of the United States. This study utilized data from the Global Burden of Diseases Study 2019, which provided comprehensive information on IHD from 1990 to 2019. Data related to IHD from these years were extracted using a query tool from the Institute for Health Metrics and Evaluation (IHME) website. The study assessed the relationship between IHD and socioeconomic development using the Socio-demographic Index (SDI) and measured the overall impact of IHD using Disability-adjusted Life Years (DALYs), considering premature death and disability. Additionally, the study analyzed the burden of IHD attributed to six main risk factors. Data analysis involved comparing prevalence, mortality, SDI, DALYs, attributable burden, and risk estimation among the states. Between 1990 and 2019, there was an improvement in socioeconomic development in all states. Age-standardized rates of disease burden for IHD decreased by 50% [ASDR 3278.3 to 1629.4 (95% UI: 1539.9-1712.3) per 100,000] with the most significant decline observed in Minnesota. Males had higher burden rates than females in all states, and the southeast region had the highest mortality rates. The prevalence of IHD showed a declining trend, with approximately 8.9 million cases (95% UI: 8.0 million to 9.8 million) in 2019, representing a 37.1% decrease in the Age-standardized Prevalence Rate (ASPR) from 1990. Metabolic risks were the leading contributors to the disease burden, accounting for 50% of cases, with Mississippi having the highest attributable risk. Arkansas had the highest attributable risk for high cholesterol and smoking. Conversely, Minnesota had the lowest burden of IHD among all the states. This study highlights variations in the burden of IHD across US states and emphasizes the need for tailored prevention programs to address specific risk factors and gender differences. Understanding the trend in IHD may inform policymakers and healthcare professionals in effectively allocating resources to reduce the burden of IHD and improve national health outcomes.

Smoking Cessation and Incident Cardiovascular Disease

The association between smoking cessation and cardiovascular disease (CVD) risk in relation to cumulative smoking exposure remains poorly understood. To evaluate the associations among smoking cessation, lifetime smoking burden, and CVD risk according to the number of years elapsed after smoking cessation. This retrospective cohort study of the Korean National Health Insurance Service database investigated smoking duration and intensity between January 2006 and December 2008. Participants were categorized by self-reported smoking habits as current, ex-, or never-smokers. Smoking records were updated every 2 years until December 2019, with participants whose smoking status changed or whose smoking status was unclear excluded. Data analysis was performed between June and December 2022. Time-updated self-reported smoking status, years since quitting, and cumulative smoking amount (pack-years [PY]). The primary outcome was incidence and hazard ratio of CVD (composite of cardiovascular death, myocardial infarction, stroke, and heart failure). Overall, 5 391 231 participants (39.9% male; mean [SD] age, 45.8 [14.7] years; 853 756 [15.8%] current smokers, 104 604 [1.9%] ex-smokers, and 4 432 871 [82.2%] never smokers) were followed up for a mean (SD) of 4.2 (4.4) years. The median (IQR) baseline cumulative smoking amounts were 14.0 (7.5-20.0) PY in current smokers and 10.5 (5.3-20.0) PY in ex-smokers. The median (IQR) duration of smoking cessation was 4 (2-8) years for ex-smokers. Regardless of continued smoking, a dose-dependent association was evident between smoking and incident CVD. Compared with current smokers, ex-smokers with a lifetime smoking burden of less than 8 PY (light ex-smokers) experienced a significant reduction in CVD risk within 10 years of cessation, with a CVD risk similar to that of never-smokers. Conversely, ex-smokers with at least 8 PY (heavy ex-smokers) exhibited a slower decline in CVD risk than light ex-smokers, requiring more than 25 years for the residual CVD risk to disappear. In this cohort study, smoking and CVD risk exhibited a dose-dependent association, with light ex-smokers having a CVD risk similar to that of never-smokers relatively soon after smoking cessation. For heavy ex-smokers, greater than 25 years might be required for the residual CVD risk to align with that of never-smokers.

The Complement Factor H (Y402H) risk polymorphism for age-related macular degeneration affects metabolism and response to oxidative stress in the retinal pigment epithelium

Age-related macular degeneration (AMD), the leading cause of central vision loss in the elderly, involves death of the retinal pigment epithelium (RPE) and light-sensing photoreceptors. This multifactorial disease includes contributions from both genetic and environmental risk factors. The current study examined the effect of the Y402H polymorphism of Complement Factor H (CFH, rs1061170) and cigarette smoke, predominant genetic and environmental risk factors associated with AMD. We used targeted and discovery-based approaches to identify genotype-dependent responses to chronic oxidative stress induced by cigarette smoke extract (CSE) in RPE differentiated from induced pluripotent stem cells (iPSC) derived from human donors harboring either the low risk (LR) or high risk (HR) CFH genotype. Chronic CSE altered the metabolic profile in both LR and HR iPSC-RPE and caused a dose-dependent reduction in mitochondrial function despite an increase in mitochondrial content. Notably, cells with the HR CFH SNP showed a greater reduction in maximal respiration and ATP production. Significant genotype-dependent changes in the proteome were observed for HR RPE at baseline (cytoskeleton, MAPK signaling) and after CSE exposure, where a less robust upregulation of the antioxidants and significant downregulation in proteins involved in nucleic acid metabolism and membrane trafficking were noted compared to LR cells. In LR cells, uniquely upregulated proteins were involved in lipid metabolism and chemical detoxification. These genotype-dependent differences at baseline and in response to chronic CSE exposure suggest a broader role for CFH in modulating the response to oxidative stress in RPE and provides insight into the interaction between environmental and genetic factors in AMD pathogenesis.

The association of combined GSTM1, GSTT1, and GSTP1 genetic polymorphisms with lung cancer risk in male Iraqi Waterpipe Tobacco (Nargila) smokers

Mutations in genes encoding proteins necessary for detoxifying oxidative stress products have been predicted to increase susceptibility to lung cancer (LC). Despite this, the association between waterpipe tobacco smoking (WP), genetic polymorphisms, and LC risk remains poorly understood. This is the first study to explore the relationship between WP tobacco smoking and these genetic factors. Previously, we investigated the association of GSTP1 SNPs (rs1695-A/G and rs1138272-C/T) with LC in Iraqi males who smoke WP. Here, we expanded our analysis to include GSTM1 (active/null) and GSTT1 (active/null) genotypes, both individually and in combination with GSTP1 SNPs. Multiplex PCR and RFLP-PCR assays were utilized to determine the genotypes of 123 cases and 129 controls. No significant association was observed between GSTM1-null or GSTT1-null genotypes and LC risk, either separately or in combination with variant genotypes of GSTP1 (rs1695 "AG+GG" and rs1138272 "CT+TT"). However, smoking WP and carrying null genotypes elevated the risk five-fold for GSTM1-null (OR 5.17, 95 % CI 2.02–13.24, P<0.001) and three-fold for GSTT1-null (OR 3.08, 95 % CI 1.55–6.13, P=0.001) compared to non-smokers carrying active genotypes. Conversely, genotype distribution analysis based on LC histological types did not indicate an increased risk of LC. Lung cancer is a complex multifactorial disease. WP smoking and GSTs genetic polymorphisms might be associated with an increased risk of developing LC. However, our data did not confirm an association between GST polymorphisms alone and the risk of LC.

Association of adverse childhood experiences with adult-onset cardiometabolic conditions and prescription medicine use

Abstract Association of adverse childhood experiences with adult-onset cardiometabolic conditions and prescription medicine use Background and importance Adverse childhood experiences are potentially preventable and traumatic events that occur during childhood. Childhood exposure to trauma is highly prevalent and adults who had adverse childhood experiences are at increased risk of developing physical conditions. However, effect of adverse childhood experiences on health outcomes remains underrecognized. Aim Here, we aimed to measure the association of cumulative adverse childhood experience with adult physical condition and use of prescription medicines in general population. Methods We conducted a cross-sectional analysis using the population-based health study including 21083 participants at age 40 years or older. Self-reported adverse childhood experiences before age at 18 years, present or previous cardiometabolic conditions, and present or previous use of medications prescribed for cardiometabolic conditions were used in our analysis. Cox proportional hazards regression was used to estimate age, sex, smoking, education, and income-adjusted risk of cardiometabolic condition and prescription medicine use after adverse childhood experiences. Association of multimorbidity and using multiple prescription medicines with adverse childhood experience was analyzed using generalized linear model with ordinal classification. Results We found that having a history of adverse childhood experience was associated with increased risk of subsequent cardiometabolic conditions; hazard ratios ranged from 1.117 (95% CI, 1.054 – 1.185) to 1.341 (95% CI, 1.181 – 1.522). Furthermore, adverse childhood experience was associated with multimorbidity of cardiometabolic conditions (odds ratio [OR], 1.195; 95% CI, 1.117 – 1.279) and increased risk of using multiple prescription medicines (OR, 1.131; 95% CI, 1.057 – 1.210). Notably, we observed the dose – effect relationships of cumulative adverse childhood experience to the increased risk of 5 among 6 cardiometabolic conditions and to the increased risk of using 4 among 6 prescription medicines. Furthermore, cumulative adverse childhood experience had the dose – effect associations with multimorbidity of cardiometabolic conditions (ORs ranged from 1.120 [95% CI, 1.033 – 1.214] to 1.526 [95% CI, 1.276 – 1.825]) and using multiple prescription medicines (ORs are 1.393 [95% CI, 1.195 – 1.624] and 1.572 [95% CI 1.315 1.879]). Conclusions and relevance: Our findings implicate cumulative adverse childhood experience as a risk factor for later cardiometabolic conditions and use of medicines prescribed for cardiometabolic conditions. Our results are significant by suggesting inquiry into adverse childhood experience exposure during clinical consultations, services to alleviate the burden and increasing resilience in addition to strategies aimed at prevention of cardiometabolic conditions might improve health outcomes.

Tradition to Concern: Health Risks and Nicotine Dependence of Midwakh Use in Young Males in the UAE

Abstract Background Midwakh smoking, a traditional practice, poses a growing public health concern in the Middle East region. Despite global efforts to curb tobacco use, smoking rates, particularly among young men, remain high. This study explores nicotine dependency, assesses acute health effects, and measures carbon monoxide levels among midwakh smokers. Methods A quasi-experimental before-and-after study involved 103 young male midwakh smokers in the UAE. Data collection included surveys featuring the Hooked-on Nicotine checklist (HONC), clinical measurements, and pre/post-smoking saliva samples. Statistical analyses, including descriptive, paired samples, correlation, and regression, assessed associations between midwakh smoking, dependency, and health outcomes. Results Preliminary findings found that 33% of midwakh smokers were under 21 years, 68% had below undergrad education, and household incomes over 15,000 AED monthly. Smoking initiation was as early as 10 years. Smoking habits revealed 37% exclusive midwakh, 54% midwakh with e-cigarettes, 21% with shisha, and 34% with cigarettes. Post-smoking clinical measurements showed significant increases in blood pressure, heart, pulse and respiratory rates, and carbon monoxide levels (p ≤ 0.05). Significant differences in pre- (134.6 ng/ml) and post-smoking (154.4 ng/ml) saliva cotinine levels (p ≤ 0.05) were observed. Regression analysis identified predictors of nicotine dependency: initiation age (β= -.315; -0.579,0.0512), household income (β = 1.221; 0.297,2.146), multiple tobacco use (β = 0.576; 0.129,1.024), quit attempts (β = 1.555; 0.519,2.590) and smoking risk perception (β = 3.420; 1.950,4.890) Conclusions Midwakh smoking adversely affects clinical measurements, with early start correlating with higher nicotine dependency, worsened by using multiple tobacco products. Urgent action is needed, including tailored prevention campaigns and support systems to aid youth cessation and raise awareness of midwakh smoking’s harmful effects. Key messages • Midwakh smoking is deeply ingrained in UAE tradition but poses significant adverse health outcomes and nicotine dependency. • There is a need to establish specialized cessation programs offering support and resources to midwakh users, addressing both the health consequences and addictive nature of midwakh.

The impact of specific health warning messages on Chinese young people's perception of smoking risks and quitting intentions.

Although a substantial body of research has analyzed the effectiveness of cigarette package warning labels in tobacco control, the very general health warnings messages (HWMs) on cigarette packaging in China have shown limited effectiveness in deterring youth from smoking. Therefore, this study investigates the impact of specific and more detailed warning text messages on Chinese young people's risk perception of smoking and their intention to quit. We employed a randomized survey experiment to examine the impact of specific text-based warning labels on Chinese young people's risk perception of smoking and intention to quit. The total effective sample size was 1064 participants. The subjects were divided into three groups: the first group served as the control group, which was shown the existing cigarette package warning labels; the second group was shown cigarette package warning labels related to cardiovascular, digestive, and respiratory diseases; and the third group was shown cigarette package warning labels related to sexual dysfunction. The respiratory disease-related warnings significantly increased young people's awareness of smoking-related respiratory risks (p<0.01). The impact of warning labels for the three common diseases on enhancing young people's overall risk perception of smoking (p<0.05) and their intention to quit exhibited only weak statistical significance (p<0.05). In contrast, warning labels related to sexual dysfunction significantly increased young people's risk perception of smoking (p<0.001) and their intention to quit (p<0.001), with a much higher level of statistical significance compared to those related to the other three common diseases. Detailed descriptions of the risks associated with all four diseases were positively correlated with awareness of smoking-related harm and the intention to quit. However, warnings related to sexual dysfunction had a greater level of statistical significance compared to those related to the other three common diseases. This stronger significance may be attributed to young people's heightened concern about sexual dysfunction.

How smokers perceive pictorial and non-pictorial health warnings on cigarette packages: An online survey

Objectives This study aimed to evaluate Japanese smokers' perceptions of health warnings on tobacco packaging by comparing text-only and pictorial warnings.Methods Data were sourced from the Japan Society and New Tobacco Internet Survey (JASTIS), an online, self-reported study conducted in February and March 2020. Participants included current smokers aged 15-74 years in Japan (n＝2,372). Perceptions regarding five packaging samples were assessed: the old package (text-only warning covering 30% of the pack's front and back before April 2020), the current package (text-only warning covering 50% of the pack's front and back), and three packages with pictorial warnings covering 50% of the front and back. Respondents were asked four questions on a 5-point Likert scale regarding the effectiveness of these warnings in terms of discouraging young people from starting to smoke, encouraging them to quit, communicating the dangers of smoking, and comfort level with the warnings. A t-test was conducted to compare each pair of packages.Results There were no significant differences observed between the "text only 30%" and "text only 50%" packages in terms of preventing young individuals from starting to smoke, encouraging quitting, or communicating the dangers of smoking (P＝0.740-0.987). Conversely, packages with pictorial warnings were perceived as more effective than text-only packages (P＜0.01) in all aspects. A significant difference was observed in the respondents' perceptions of comfort levels with the packages, with the pictorial ones deemed more uncomfortable (P＜0.01).Conclusion The findings indicated that pictorial health warnings are significantly associated with increased awareness of smoking risks, motivation to quit smoking, and prevention of smoking initiation among young people. Accordingly, Japan should consider adopting pictorial health warnings in accordance with the Framework Convention on Tobacco Control.

Evaluating Fire and Smoke Risks with Lithium-Ion Cells, Modules, and Batteries

Evaluating Fire and Smoke Risks with Lithium-Ion Cells, Modules, and Batteries

Association between cigarette smoking and nasopharyngeal cancer risk: a meta-analysis.

Nasopharyngeal cancer (NPC) is a relatively rare yet aggressive malignancy, primarily affecting regions of East and Southeast Asia. This study aims at providing an up-to-date quantification of the association between cigarette smoking and NPC risk, overall and by histological subsites. We conducted a systematic review and meta-analysis of case-control and cohort studies on the association between cigarette smoking and NPC risk published up to May 2023. The methodology used is original and efficient and includes both a comprehensive umbrella review and a traditional review. We estimated pooled relative risks (RR) of NPC according to smoking status, intensity, duration, and time since quitting. Among 46 eligible articles, 40 original studies were included in this meta-analysis. Compared with never smokers, the pooled RR of NPC was 1.61 for current, 1.28 for former, and 1.62 for ever smokers. The RR for ever compared with never smokers was 2.37 for squamous cell NPC and 1.06 for undifferentiated NPC. NPC risk significantly increased linearly with smoking intensity and duration, and decreased linearly with increasing time since quitting. This meta-analysis confirms the link between tobacco smoking and NPC, highlighting the significant risk posed even by moderate cigarette consumption. Additionally, our findings underscore the differential risk between squamous cell and undifferentiated subtypes of NPC, shedding light on the distinct implications for NPC prevention strategies.

Combined Risk for Cigarette Smoking and Irregular Toothbrushing

Combined Risk for Cigarette Smoking and Irregular Toothbrushing

EVALUATING PATIENT AWARENESS OF SMOKING - RELATED ORAL HEALTH RISKSAMONG BATHINDARESIDENTS: A SURVEY- BASED STUDY

Background:Smoking poses serious risks to oral health, contributing to issues like gum disease, oral cancer, and impaired healing. However, many patients are not fully aware of these dangers. Aim and Objective:The objective of this study is to assess the level of awareness among dental patients regarding smoking &amp; detrimental effects of smoking &amp; to explore patients perceptions of how smoking affects their overall oral health. Materials and Methods:A questionnaire based observational survey was carried out among 160 participants in the Bathinda district. The questionnaire was distributed through online platforms. The self-made questionnaire was used to assess the level of awareness among the patients Results: The study assessed participants awareness of smokings effects on oral health, revealing varied levels of understanding. High awareness was noted for teeth staining, oral cancer risk, and decreased taste, while gaps existed regarding gum disease, second-hand smoke risks, and the role of dental visits in preventing smoking-related issues. Educational efforts are needed to address these gaps. Conclusion: The study reveals gaps in awareness of smokings serious oral health risks. Increased education and smoking cessation efforts are needed to improve patient outcomes.

Gender differences between smoking and the risk of hip fracture.

This study aimed to estimate the relation between cigarette smoking and hip fracture in men compared with women using a meta-analytic approach. On March 1, 2024, prospective cohort studies were searched from PubMed, Embase and Cochrane library systems. The gender difference in the relationship between smoking and hip fracture risk was evaluated by random effect model. Eleven prospective cohort studies involving data from 2,689,620 individuals were selected for meta-analysis. The ratio of relative risk (RRR) of hip fractures in current smokers was significantly higher in men than in women (RRR: 1.10; 95%CI: 1.00 - 1.20; P = 0.047), while no evidence of sex differences in former smoking and hip fracture risk (RRR: 0.98; 95%CI: 0.88 - 1.10; P = 0.759). The male-to-female RRR of hip fractures increased in current smokers, whereas no sex difference was found in the relationship between former smoking and the risk of hip fractures.

Association Between Cigarette and Bidi Purchase Behavior (Loose vs Pack) and Health Warning Label Exposure: Findings From the Tobacco Control Policy India Survey and In-Depth Interviews With People Who Smoke.

The sale of loose cigarettes or bidis can undermine the purpose of requiring health warning labels (HWLs) on cigarette packs and bidi bundles by diminishing their visibility and legibility. This mixed-methods study aims to examine the association between purchase behavior (loose vs pack or bundle), HWL exposure, and responses to HWLs among Indian adults who smoke. Data were analyzed from the 2018-2019 India Tobacco Control Policy Survey and from 28 in-depth interviews conducted with Indian adults who smoked in 2022. The Tobacco Control Policy Survey sample included tobacco users who bought cigarettes (n=643) or bidis (n=730), either loose or in packs or bundles at their last purchase. Ordinal regression models were fit separately for cigarettes and bidis, whereby HWL variables (noticing HWLs, reading and looking closely at HWLs, forgoing a cigarette or bidi because of HWLs, thinking about health risks of smoking, and thinking about quitting smoking cigarettes or bidis because of HWLs) were regressed on last purchase (loose vs packs or bundles). In-depth interviews with participants from Delhi and Mumbai who purchased loose cigarettes in the last month were conducted, and thematic analysis was used to analyze the interview data. Survey findings indicated that about 74.3% (478/643) of cigarette users and 11.8% (86/730) of bidi users reported having bought loose sticks at their last purchase. Those who purchased loose cigarettes (vs packs) noticed HWLs less often (estimate -0.830, 95% CI -1.197 to -0.463, P<.001), whereas those who purchased loose bidis (vs bundles) read and looked closely at HWLs (estimate 0.646, 95% CI 0.013-1.279, P=.046), thought about the harms of bidi smoking (estimate 1.200, 95% CI 0.597-1.802, P<.001), and thought about quitting bidi smoking (estimate 0.871, 95% CI 0.282-1.461, P=.004) more often. Interview findings indicated lower exposure to HWLs among those who purchased loose cigarettes, primarily due to vendors distributing loose cigarettes without showing the original cigarette pack, storing them in separate containers, and consumers' preference for foreign-made cigarette brands, which often lack HWLs. While participants were generally aware of the contents of HWLs, many deliberately avoided them when purchasing loose cigarettes. In addition, they believed that loose cigarette purchases reduced the HWLs' potential to deliver consistent reminders about the harmful effects of cigarette smoking due to reduced exposure, an effect more common among those who purchased packs. Participants also noted that vendors, especially small ones, did not display statutory health warnings at their point of sale, further limiting exposure to warning messages. Survey and interview findings indicated that those who purchased loose cigarettes noticed HWLs less often. Loose purchases likely decrease the frequency of exposure to HWLs' reminders about the harmful effects of smoking, potentially reducing the effectiveness of HWLs.

Relative efficacy of cigarillo warning statements in text and pictorial formats: An experimental study among a sample of US young adults.

Health warning labels (HWLs) communicate the health risks of cigar use and can decrease use when on cigar packages. This study assessed the relative efficacy of six FDA-proposed individual warning statements in text and pictorial format. A sample of young adults (ages 18-29) were randomized to a text or pictorial warning condition on generic cigarillo packages. The warning statements were about lung cancer and heart disease; cancers of the mouth and throat; secondhand smoke; not a safe alternative; nicotine/addiction; and harm to baby. Negative emotional reactions, cognitive elaboration, and perceived message effectiveness (PME) were assessed for each warning using linear mixed models. Of the 661 participants, 47.3% reported ever cigarillo smoking, 32.7% current smoking, and 20% were susceptible. In the pictorial format, cancers of the mouth and throat elicited lower levels of anxiety compared to secondhand smoke, not a safe alternative, nicotine/addiction, and harm to baby (ps<0.001). Pictorial HWLs with human imagery induced high anxiety, sadness, fear, and guilt reactions (p<0.001) and higher PME (p=0.011) compared to pictorial HWLs with diseased body parts. Compared to the text HWL cancers of the mouth and throat, the text HWL harm to baby elicited higher anxiety (p=0.003), sadness (p=0.002) and PME (p<0.001). Pictorial HWLs depicting people or human imagery, rather than images of diseased organs or body parts, to represent health effects elicited the most negative emotional reactions, such as anxiety and guilt, and higher PME. Including such images and texts highlighting effects on vulnerable populations like babies can better communicate cigarillo health risks, aiming to curb cigarillo use among young people. The study suggests that pictorial health warning labels (HWLs) with human imagery significantly enhance the communication of cigarillo smoking risks compared to images of diseased organs. These HWLs evoke stronger emotional responses, particularly anxiety and guilt, and higher perceived message effectiveness by depicting a recognizable person. Furthermore, text-only warnings describing the smoking effect on vulnerable populations such as babies might have a higher impact on young adults. This evidence supports a strategic shift in FDA policies to include such impactful images and texts, which could potentially lead to a significant reduction in cigarillo use among young people. Our findings underscore the urgent need for continued research and implementation of these enhanced warning labels to improve public health outcomes.

Allostatic Load, Cigarette Smoking, and Lung Cancer Risk.

Background: Allostatic load (AL) is a biomarker of chronic stress associated with various chronic diseases. No study has evaluated the relationship between AL and lung cancer risk. Methods: To address this gap, we analyzed the association between AL and the development of lung cancer in 344,380 participants from the UK Biobank. Results: During the follow-up period from 2006 to 2020, 2517 participants were diagnosed with incident lung cancer. Participants who developed lung cancer had significantly higher AL compared to cancer-free controls (mean: 3.49 vs. 2.87, p < 0.001). In the multivariate analysis, a marginally significant association was observed between higher AL and increased lung cancer risk (per one AL unit: Hazard Ratio [HR] = 1.02, 95% Confidence Interval [CI]: 0.99, 1.04). In the categorical analysis, individuals with high AL (AL > 2) had a 15% higher risk of lung cancer compared to those with low AL (AL ≤ 2) (HR = 1.15, 95% CI: 1.05, 1.25). Stratified analyses revealed that this increased risk was only observed in former (HR = 1.38, 95% CI: 1.06, 1.43) and current smokers (HR = 1.25, 95% CI: 1.10, 1.42) but not in never-smokers (HR = 0.93, 95% CI: 0.74, 1.17). Moreover, we found that demographics, socioeconomics, and other health behaviors could modify the risk association. Finally, among cigarette smoking-related variables, a significant trend of increasing AL was observed with higher pack-years, longer smoking duration, earlier age of smoking initiation, and later age of smoking cessation. Conclusions: These findings suggest that higher AL is associated with an increased risk of lung cancer. The results need to be further confirmed in additional studies.

Exploring Implicit and Explicit Affective Responses to Graphic Health Warnings on Cigarette Packages in Colombia

Graphic health warnings (GHWs) are regarded a highly cost-effective public policy to communicate the health risks involved in smoking, mainly when they trigger negative emotional reactions. GHWs promote intentions to quit among smokers and prevent smoking initiation among non-smokers. In three experiments, we study how smokers and nonsmokers differ in implicit and explicit measures of emotional reactions towards GHWs. Experiment 1 used the Self-Assessment Manikin to measure explicit emotional (arousal and valence) ratings for six warnings published in tobacco products. Experiment 2 was similar to Experiment 1 but smokers and nonsmokers rated a new set of 36 GHWs not yet published. Experiment 3 used an implicit task, the Affect Misattribution Procedure, to evaluate and compare the affective responses to GHWs provided by smokers and non-smokers. Experiments 1 and 2 showed that smokers explicitly reported weaker negative emotional reactions to both familiar and unfamiliar GHWs compared to nonsmokers. Experiment 3 showed similar levels of negative implicit emotional responses among smokers and nonsmokers. Our data suggest that the decreased affective response involves high-order cognitive elaboration and evaluations of the messages conveyed by GHW, while early negative emotions triggered by the graphic component of the warnings similarly affect smokers and non-smokers. We propose that implicit measures may serve as additional and inexpensive tools for dissociating explicit biased affective responses of smokers towards GHWs from automatic emotional responses. In particular, the affect misattribution procedure may help to design warnings that communicate the risks of smoking but prevent adverse outcomes such as cognitive dissonance.

Prenatal exposure to maternal smoking and adult lung cancer risk: a nested case-control study using peripheral blood leukocyte DNA methylation prediction of exposure

Abstract A prior study reported no association between prenatal-smoking methylation scores and adult lung cancer risk adjusting for methylation-predicted adult smoking, without considering maternal smoking trends by birth cohort. To address this gap, we examined the association between prenatal-smoking methylation scores and adult lung cancer, independent of methylation-predicted adult packyears, and by birth cohort, in a study nested in CLUE II. Included were 208 incident lung cancer cases ascertained by cancer registry linkage and 208 controls matched on age, sex, and smoking. DNA methylation was measured in prediagnostic blood. We calculated two prenatal-smoking scores, using 19 (Score-19) and 15 (Score-15) previously-identified CpGs and a methylation-predicted adult packyears score. Conditional logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI) adjusting for adult packyears score and batch effects. Score-15 was positively associated with lung cancer (per SD, OR=1.40, 95%CI 1.10-1.79, p-trend=0.006), especially in the 1930-38 birth cohort (OR=3.43, 95%CI 1.55-7.60, p-trend=0.002). Score-19 was associated only in the 1930-38 birth cohort (OR=2.12, 95%CI 1.15-3.91). Participants with both prenatal scores below the median (vs all other combinations) had lower risk (OR=0.44, 95%CI 0.27-0.72), especially in the 1930-38 birth cohort (OR=0.16, 95%CI 0.04-0.62). Among ever smokers, participants with higher prenatal smoking scores had higher risk, irrespective of adult packyears (low: OR=2.81, 95%CI 1.38-5.72, high: OR=2.67, 95%CI 1.03-6.95). This prospective study suggests a positive association between prenatal smoking exposure and adult lung cancer risk, especially in the 1930-38 birth cohort, independent of active smoking. Future studies with multiple birth cohorts are needed.