If you find that when temperatures start dropping, your mood does too, then you're not alone. This is because experts believe that as many as 20% of Americans experience the so-called winter blues every year. Typically, winter blues amount to some minor social withdrawal and mood swings, which reverse themselves as our planet rotates back towards the sun. However, for millions of people around the world, these depressive symptoms are severe and long-lasting, which end up affecting how they sleep, eat, think, and live their lives. One such person was Diana Lillo, 55. Despite her symptoms changing from one year to the next, every winter she found that she had "depression for no apparent reason—a generalized feeling of 'doom and gloom' even when nothing, in particular, was wrong." When it started to affect her marriage, Lillo sought help and was diagnosed with SAD. "Seasonal affective disorder, or SAD, is clinical depression that follows a seasonal pattern," says Kelly Rohan, Ph.D., Professor of Psychological Science and Director of Clinical Training at the University of Vermont. Health professionals are not entirely sure why it occurs, but they agree that a lack of sunlight plays a key role. One theory is it messes with your biological clock, which can lead to symptoms of depression. Another theory is that the lack of light interferes with brain chemicals, such as serotonin and melatonin, which affect sleep and mood.  If you have the usual winter blues, your symptoms will most probably be rather mild. "Perhaps you feel a little less energetic than you do in the summertime and have some food cravings that are unusual, like wanting to eat more carbohydrate-rich foods, or you sleep a little more, but not substantially more," says Rohan. Such feelings will typically leave of their own accord, possibly just after a few days. On the other hand, SAD typically causes more serious oversleeping, weight gain, appetite changes, lethargy, and social isolation. You could also end up experiencing intense sadness, irritability, problems concentrating, feelings of hopelessness or worthlessness, or even suicidal thoughts. What's more, if you are diagnosed with SAD, these symptoms will stick around "for at least two weeks, if not longer, most of the day, nearly every day," according to Rohan. They will interfere with your daily functioning and ability to do things, causing a lot of distress. |
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