BLOOMINGTON - Now that Labor Day has come and gone, so have the days of summer sun into the evening hours. While this is a typical sign of changing seasons, it can also come with a change in mood for those who suffer from seasonal affective disorder, or SAD. It’s estimated that SAD affects 5-million to 8-million people a year in the United States, particularly in late fall and colder, winter months when days are shorter and nights are longer. It is thought to be related to the lack of available sunlight, leading to a deficiency of Vitamin D. This can disrupt a person’s natural sleep cycle, and the effect on the brain can cause a person to function differently. “People in the winter time, particularly in northern, far northern latitudes or far southern latitudes, farther away from the equator will tend to get kind of sluggish and maybe depressed, they start to have carbohydrate cravings, and it may be enough that it’s really a significant problem for them,”
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