Okay, so there have been times when you've snuggled up with a pint of Ben & Jerry's in bed. That's normal. But if you're constantly eating huge amounts of food at night, you may have night eating syndrome (NES), a disorder that affects more than 4 million Americans. While experts used to think this disorder affected mainly those who are obese, researchers at the University of Pennsylvania found that it affects people at an average weight too. Although experts aren't sure what causes this problem, they suspect a sleep-hormone disorder may be a trigger. If you think you may have NES, speak with your doctor or see an eating-disorder specialist. She may suggest therapy or the antidepressant Zoloft, which has been shown to improve symptoms.

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