I think it’s safe to say that many of us who have bipolar disorder struggle with weight gain.
The main reason is that medications can affect our appetite. My medication makes me crave sweets like never before. A woman I met in my bipolar support group had just been diagnosed with the disorder and subsequently put on a mood stabilizing drug. Within a matter of weeks she had gained 20 pounds. The weight didn’t just suddenly appear. It happened because this woman couldn’t stop her cravings for donuts.