Daylight Saving Time and Health: Systematic Review with SAIMSARA

This systematic review, generated by the autonomous multilayer AI research agent ☸️SAIMSARA, synthesizes evidence on the health effects of Daylight Saving Time (DST). From 1 777 retrieved publications, 95 original studies encompassing 1 268 808 participants were analyzed. Outcome-Sentiment Meta-Analysis (OSMA) revealed that DST was associated with beneficial outcomes in 25 % (ΣN = 312 472), harmful in 61 % (ΣN = 775 143), and neutral in 14 % (ΣN = 181 193) of participants. The most consistent effect was a median sleep loss of ≈ 50 minutes following the spring transition, alongside transient increases in cardiovascular events and accident rates. Evidence heterogeneity limits firm causal inference, but overall findings support Standard Time as physiologically more favorable for circadian and public health alignment.