My bmi is 21 so I'm not overweight, but this is the heaviest I've ever been which bothers me. My antipsychotics make me eat so much and I gain 20 lbs from them! I recently lost 5lbs from going to the gym so I'm trying to keep it up. I think people with bipolar are more at risk for being overweight because of the side affects of medications such as increased appetite and our mental condition affects our energy levels. When you're depressed you're most likely going to stay home and sleep all day along with intaking more calories than you need. There may be a study on this published in a psych journal and could be accessible online