Many people are sure that exercise improves their mood, and studies have suggested that exercise is almost as effective as antidepressants in relieving symptoms of depression. But a new study has found that even though people who exercise are less likely to be depressed or anxious, it is probably not because they exercise.
Dutch researchers studied 5,952 twins from the Netherlands Twins Registry, as well as 1,357 additional siblings and 1,249 parents, all 18 to 50 years old. They recorded survey data about the frequency and duration of exercise and used well-validated scales to uncover symptoms of depression and anxiety. The study was published Monday in The Archives of General Psychiatry.
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