Mode
Text Size
Log in / Sign up

Meta-analysis finds high second-hand smoke exposure prevalence in Israeli adults and childrenHow many people in Israel breathe second-hand smoke? The numbers are high

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Note high second-hand smoke exposure prevalence in Israel, but interpret cautiously due to substantial study heterogeneity.

This systematic review and meta-analysis examined the prevalence of second-hand tobacco smoke (SHS) exposure among adults and children in Israel, synthesizing data from 18 studies published between 2012 and 2024. The analysis included both self-reported exposure and biomarker assessments, with no specific comparator reported. The primary outcome was prevalence of SHS exposure across different populations and measurement methods.

The pooled prevalence estimates revealed substantial exposure levels. Among adults, self-reported SHS exposure prevalence was 56.0% (95% CI: 54.0% to 57.0%), while biomarker assessment showed 51.0% prevalence (95% CI: 47.0% to 55.0%). For children, self-reported exposure was notably higher at 74.0% (95% CI: 73.0% to 75.0%), though biomarker assessment indicated 55.0% prevalence (95% CI: 50.0% to 60.0%). Absolute numbers for these estimates were not reported in the meta-analysis.

Safety and tolerability data were not reported in this prevalence-focused analysis. The key limitation was high statistical heterogeneity across all analyses (I² >90%), indicating substantial variability between the included studies. This heterogeneity suggests that prevalence estimates varied widely across different study populations and settings within Israel. The findings should be interpreted as descriptive associations rather than causal relationships, and generalization beyond the Israeli population studied is not warranted.

A fresh look at the research on second-hand smoke in Israel shows a widespread, hidden health issue. By combining data from 18 different studies, researchers found that more than half of adults and an even higher proportion of children are regularly exposed to tobacco smoke from others. The numbers are particularly stark for kids, with self-reported data suggesting nearly three-quarters are exposed, though a more objective measure using biomarkers found about 55%.

This analysis pooled information from studies published over the last decade, giving us a broader view than any single study could. It's important to note that the way exposure was measured made a big difference—people's own reports often showed higher rates than the biomarker tests, which look for traces of tobacco in the body.

However, there's a major caveat to these findings. The studies included were very different from each other, a fact the researchers call 'high heterogeneity.' This means the true exposure rate could vary a lot depending on where you live, your age, or your community. So, while the pooled numbers point to a serious public health concern, they don't give us one clear, precise national rate. This review confirms exposure is common, but also highlights how much the experience can differ from person to person.

What this means for you:
Second-hand smoke exposure is common in Israel, especially among children, but estimates vary widely.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
OBJECTIVES: Exposure to second-hand tobacco smoke (SHS) remains a significant global public health concern. Although previous studies have estimated the prevalence of SHS exposure in Israel, a systematic synthesis has not been performed. This study aims to identify and describe the different studies performed in Israel to ascertain the prevalence of exposure to SHS. STUDY DESIGN: Systematic review and meta-analysis. METHODS: A systematic literature review was conducted using Ovid Medline, Embase, and Web of Science, covering publications between 2012 and 2024. All studies reporting data on the prevalence of exposure to SHS in Israel were included. Data were extracted, summarised in tables, and differentiated by type of population (adults vs. children). A qualitative and quantitative synthesis of the results was performed. For the quantitative synthesis, a random effects model was used. Quality assessment was performed using a modified version of the Newcastle-Ottawa Scale. RESULTS: Eighteen studies met the inclusion criteria. The prevalence of exposure to SHS ranged from 20.5% to 94.9% among adults, and the respective range among children was 29.0% to 85.6%. Among adults, the pooled prevalence of SHS exposure was 56.0% (95% CI: 54.0% to 57.0%) by self-report and 51.0% (95% CI: 47.0% to 55.0%) by biomarker assessment. The corresponding estimates among children were 74.0% (95% CI: 73.0% to 75.0%) and 55.0% (95% CI: 50.0% to 60.0%). Heterogeneity was high in all analyses (I >90%). CONCLUSIONS: The prevalence of exposure to SHS in Israel varies significantly due to differences in population type, definition of exposure, and assessment methods.
Free Newsletter

Clinical research that matters. Delivered to your inbox.

Join thousands of clinicians and researchers. No spam, unsubscribe anytime.