![]() ![]() People suffering with SAD are only depressed during the winter and feel "normal" during spring and summer.Ī main theory about what causes SAD is that biological rhythms are disturbed by a mismatch between the internal body clock and the external environment. More severe and persistent symptoms that greatly impair your social or work functioning gets you a diagnosis of seasonal affective disorder (SAD), a type of clinical depression. If you also have low mood, feel tired all the time and crave carbohydrates, you may have the winter blues. Maybe you have a terrible time waking up on dark winter mornings. That means most people in winter wake up before there is any dawn light outside. ![]() where I live in Vancouver, but a winter dawn doesn't begin until well past 7:30 a.m. In summer, first light starts before 5:00 a.m. It comes slowly, before sunrise, with a gradual increase in daylight over about an hour and a half. This time of year I like to watch the dawn arrive while having my morning coffee. Welcome to Health Advisor, where contributors share their knowledge in fields ranging from fitness to psychology, pediatrics to aging. ![]()
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