Seasonal Affective Disorder Sparked by Shorter Days

ABC News' Dr. Richard Besser reports the latest health news that may impact you.
1:54 | 11/01/15

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Transcript for Seasonal Affective Disorder Sparked by Shorter Days
at Cigna dot com slash take control. Test Text1 plain ? It's called the weekend download. Information to help you get your weekend started right. For some people, seasonal affect ive disorder. Dr. Richard Besser is here. What is S.A.D.? It's full-fledged depression that comes on in the late fall, early winter, more commonly in women and younger adults and in people who live further north where days tend to be shorter. What are the symptoms. Symptoms of depression, lack of energy, feeling hopeless and in addition, you can see symptoms that are less typical, more sleep, increased appetite, those are things that you'll see with this. Why is this such a problem when we turn the clocks back? It's interesting, a lot of our hormones are regulated by sunlight. Seratonin levels tends to go down. What can we do about this? You want to know if this each winter, you start to feel down. You want to see your doctors. One thing they may recommend to you is a light box, it's very, very effective. Sessions of ten to 30 minutes, sitting, looking at the light can affect your mood and can improve things. It's important to if you have these symptoms to talk to your doctor. Wow, Dr. Besser, thank you for the first download, we appreciate it. Can I have the light, please? I'll leave it right there. It makes us look younger Coming up on "Good morning America" -- you loved George

This transcript has been automatically generated and may not be 100% accurate.

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