Secondhand Nicotine Absorption From E-Cigarette Vapor vs Tobacco Smoke in Children, in JAMA Network Open
key takeaway: "Compared with children exposed to secondhand smoke only, nicotine absorption was 83.6% lower in those exposed to secondhand vapor only and 96.7% lower in those exposed to neither."
Mental Health of Transgender Youth Following Gender Identity Milestones by Level of Family Support, in JAMA Network Pediatrics
key takeaway: "Initiating a gender identity milestone was associated with a higher risk of suicide attempt and running away from home among transgender youth who live in unsupportive families, whereas supportive family environments mitigate these risks."
The prevalence of gambling and problematic gambling: a systematic review and meta-analysis, in The Lancet Public Health
key takeaway: "Globally, 46·2% (95% CI 41·7–50·8) of adults and 17·9% (14·8–21·2) of adolescents had gambled in the past 12 months. Rates of gambling were higher among men (49·1%; 45·5–52·6) than women (37·4%; 32·0–42·5). Among adults, 8·7% (6·6–11·3) were classified as engaging in any risk gambling, and 1·41% (1·06–1·84) were engaging in problematic gambling. Among adults, rates of problematic gambling were greatest among online casino or slots gambling (15·8%; 10·7–21·6)."