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<p>Extant research suggests that disaster exposure may induce unhealthy behavior, such as smoking, drinking, and eating disorder symptoms in survivors; however, the underlying the mechanisms of such behavior remain unclear. Using two field experiments in two separate disaster-affected communities in Japan (<i>N</i> = 337) and the Philippines (<i>N</i> = 187), this study found that scarcity and reinforced present-bias were associated with disaster experiences and unhealthy behavior in both locations. These experiments were conducted twice (i.e., 2–3 years and 6 years post-disaster), allowing us to examine the enduring impact of these disasters. Disaster survivors became consistently present-biased, which in turn explains variance in individuals’ health-related decisions, such as body mass index, smoking, and drinking.</p>

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Unhealthy behaviours in disaster survivors are associated with scarcity and present bias

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月24日

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  • Yasuyuki Sawada,
  • Yusuke Kuroishi,
  • Toyo Ashida,
  • Jun Aida,
  • Kei Kajisa,
  • Hiroyuki Hikichi,
  • Takahiro Sato,
  • Eduardo Lucio,
  • Katsunori Kondo,
  • Ken Osaka,
  • Ichiro Kawachi

摘要

Extant research suggests that disaster exposure may induce unhealthy behavior, such as smoking, drinking, and eating disorder symptoms in survivors; however, the underlying the mechanisms of such behavior remain unclear. Using two field experiments in two separate disaster-affected communities in Japan (N = 337) and the Philippines (N = 187), this study found that scarcity and reinforced present-bias were associated with disaster experiences and unhealthy behavior in both locations. These experiments were conducted twice (i.e., 2–3 years and 6 years post-disaster), allowing us to examine the enduring impact of these disasters. Disaster survivors became consistently present-biased, which in turn explains variance in individuals’ health-related decisions, such as body mass index, smoking, and drinking.