Air Pollution inside Vehicles: Making a Bad Situation Worse.

Thailand has successfully forwarded Article 8, Protection from Exposure to Tobacco Smoke, of the World Health Organization's Framework Convention on Tobacco Control (WHO FCTC). It achieved its 100% smoke-free goals in public places in 2010, next pursuing other bans in outdoor places to lower particulate matter air pollution (PM2.5). Our aim was to expose the secondhand smoke levels in vehicles since SHS is a danger to everyone, but especially to children and youth. This is the first experimental study of its kind in Thailand. We measured PM2.5 for 20 min under four conditions in 10 typical Thai vehicles, including commonly used sedans and small pickup trucks. We used an established protocol with two real-time air monitoring instruments to record PM2.5 increases with different vehicle air exchange and air conditioning conditions. Monitoring was recorded in the vehicle's front and back seats. The most common Thai ventilation condition is all windows closed with fan/air conditioning (AC) in operation because of Thai tropical conditions. Mean exposure levels were three and nearly five times (49 and 72 µg/m3) the 24 h WHO standard of 15 µg/m3 in the back and front seats, respectively. These high PM2.5 exposure levels warrant action to limit vehicle smoking for public health protection.

Electronic Cigarette Harms: Aggregate Evidence Shows Damage to Biological Systems.

Evidence of the harms of e-cigarettes has been unfolding slowly and has been documented in many reviews and reports worldwide. A narrative review of new evidence is presented since, as research has continued, newly aggregated evidence of the dangers of electronic cigarettes on the brain, heart, and lungs is vital to inform decisions on restricting the use of e-cigarettes. Several biomedical research databases were searched for electronic cigarette health effects, emphasizing reviews, systematic reviews, and meta-analyses. Over 50 review studies, primarily in 2022 and 2023, illustrate some of the latest information on e-cigarette harms. Results show studies of respiratory, neurological, and cardiovascular effects. Researchers call for expanding studies through new methods to elaborate on initial findings of multiple harms emerging in clinical investigations. Since the use of electronic cigarettes for adult cessation is not sanctioned in most countries, it is clear that health authorities see significant costs to the health of the general population if the promotion and use of electronic cigarettes occur worldwide. Regulatory action to control electronic cigarettes should consider the substantial evidence of electronic cigarette harm.

Youth risk behavior survey: Bangkok, Thailand.

PURPOSE: To identify the prevalence of risk behaviors and related risk factors in adolescents in Bangkok, Thailand. METHODS: Youth risk behavior survey questionnaires were collected from 2311 adolescents in 8 schools, 13 communities and 2 Juvenile Home Institutions from January to February 2001. Their mean age was 15.5 +/- 1.8 years, and 59% were female. Risk factors of interest were gender, parental marital status, socioeconomic status, family relationship, parental drug addiction, peer group, loneliness, self-esteem, and school performance. Multiple logistic regression was used to identify significant risk factors associated with each risk behavior. RESULTS: The risk behaviors leading to traffic accidents were rarely or never having worn a seat belt (30.6%) or helmet while bicycling (66.9%) and while motorcycling (50.1%), riding with drivers who had consumed alcohol (18.8%), and driving after consuming alcohol (12.1%). The studied group carried weapons (8.5%) and has been involved in a violent event (31.5%). Among 13.9% who were assaulted, 6.7% needed hospitalization; rape was reported by 2.4%. Depression was reported by 19.9%, with 12% having suicidal tendencies and 8% attempting suicide. The lifetime use vs. heavy use prevalence of substance abuse, respectively, was: 15.4% and 3.5% for smoking, 37.3% and 1.7% for alcohol, 37.8% and 4.6% for amphetamine use, and 37.9% and 0.1% for other drugs. Among the 10% who have had sexual intercourse, 1% were homosexual, 7.1% have never used a condom, and 2.1% resulted in pregnancy. Being male was a risk factor for every untoward behavior except depression. Other risk factors included poor self-esteem, poor school performance, and early school leaving. Factors relating to the family included a low socioeconomic status, poor relationships, broken families, and parental substance abuse. Socioenvironmental factors included being in a gang and loneliness. Some risk behaviors started at younger than 8 years old. Schools and media were given as the sources of information regarding sex, human immunodeficiency virus infection, and substance abuse. CONCLUSIONS: The prevalence of six major-risk behaviors in adolescents in Bangkok was significantly high. Several risk factors were identified, the knowledge from which may help to form preventive measures in this population.