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Dark nights and light days predict mortality, a new study finds.

Dark nights and light days predict mortality, a new study finds. Mar Lei/Getty Images hide caption

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Mar Lei/Getty Images

Shots - Health News

Getting more light in the day and less at night is good for your health. Here's why

Diet, exercise and sleep are fundamental to our health, but so it our relationship to light. A massive, new study suggests light-driven disruption can take years off our lives.

Why dark nights and bright days are good for health

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