6 New Ways to Boost Your Mood with Food

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New truth: That caffeine high is real

If you feel that your morning coffee soothes your soul, it's not your imagination: A large 2011 study from the Harvard School of Public Health found that women who drank at least two cups of coffee regularly had a 15 percent lower risk of depression than those who didn't drink any coffee—and their risk decreased by 20 percent when they downed four or more cups of joe a day. (Read more about the health benefits of coffee.)

Next: Your prescription: Caffeine in moderation