Vitamin D may counteract ‘winter blues’
During the winter, the days are shorter, and we spend more time indoors. This is a significant change for our bodies to adjust to, especially for those of us who live in cool climates. Many people experience some decline in mood during the winter – feelings of anxiety and depression are known to be more prevalent when the weather is colder. For some individuals who have Seasonal Affective Disorder (SAD), these seasonal mood changes are especially pronounced and combined with fatigue, irritability, and appetite changes. The rate of SAD increases with distance from the equator, and light therapy is an effective treatment for many individuals with SAD. Reduced sunlight exposure, resulting in changes in circadian rhythms and serotonin (a brain chemical associated with feelings of well-being), is thought to be the underlying cause of this condition.For the complete article see the 01-30-2013 issue.
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