Thanks for responding.

Yeah, the physical activity has definitely played a part. But the extreme weight loss started shortly after the antidepressant was increased. I bought a belt not even a month ago and I already need to buy a smaller one. I stupidly replaced my wardrobe in late January/early February and now I'm too small for those clothes.

I'm not eating very much but there's no other symptoms of mania (I've got bipolar disorder as my main problem). When I asked myself why I wasn't eating, it's because while food looks good, I'm taking a moment to see if I really want it or not. That's a level of control I don't remember ever having.