What is the role of sunlight in the development of suicidal behaviors?

Updated: Aug 29, 2019
  • Author: Stephen Soreff, MD; Chief Editor: Glen L Xiong, MD  more...
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Lack of daylight correlates with depression and suicide. Regions with long, dark winters, such as Scandinavia and parts of Alaska (eg, Nome), have high suicide rates. Indeed, persons with seasonal affective disorder (SAD) who live in these regions experience depression in the absence of sunlight and, hence, have a higher susceptibility to depression, which may lead to suicide.

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