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How does seasonal affective disorder affect the body?

Seasonal affective disorder (SAD) can affect the body in a variety of ways. SAD is most likely caused by an increase in melatonin - or decrease in serotonin - during winter months when sunlight is scarce. These chemical imbalances lead to lethargic feelings, weight gain (or sometimes weight loss if symptoms occur during the summer), changes in appetite and may even make it more difficult to concentrate.

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Coping with Seasonal Affective Disorder: 4 Treatments That Help
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While the cooler temperatures and shorter days of fall and winter mean relief from summer heat and sun, they can, for some people, bring changes in mo...
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What is the link between seasonal affective disorder and bipolar disorder?
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Many people living with bipolar disorder experience seasonal affective disorder (SAD), which is ...
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Is Vitamin D Associated with Seasonal Affective Disorder?
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.