I've self-medicated with food all my life. It's part of what's called "atypical" depression, which is common in bipolar disorder. With atypical depression a person usually eats more, sleeps more, has trouble getting out of bed, feels heavy in their limbs, and is basically exhausted all the time. So no, OP, you are not the only one who binges on sugar and other "bad" foods when you're down.