Why do I feel more tired during winter than other seasons?

You may feel more tired during winter than other seasons because of longer nights. The body naturally wants to sleep more when it is dark out, so with longer nights some people's sleep/wake cycles reinforce more sleep. Some people may have seasonal affective disorder, which is a mood-related condition that is related to the decreased amount of sunlight during the winter months. You should talk to your doctor about any mood changes you notice, regardless of the season.
Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
The fatigue you feel in the winter months isn’t in your head. Energy levels are naturally depleted during winter thanks to factors like lack of sunlight (which triggers vitamin D deficiency), light changes that affect sleep patterns, and winter diet and medicines. Even the clutter that naturally accumulates during the cold months can leave you feeling overwhelmed and fatigued.

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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.