Two-stage time-series analysis reveals heat exposure affects suicide risk in Japan during summer, suggesting public health implications.
• Heat exposures based on daily maximum, mean, and minimum temperatures, reflecting daytime, average, and nighttime heat, were associated with increased suicide risk during summer in Japan. • The suicide risk associated with minimum temperature showed a modest late-summer decline in susceptibility to nighttime heat. • The suicide risk associated with maximum temperature remained largely unchanged throughout the summer.
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Misawa et al. (2026) studied this question.
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