I clarified my statement. I was talking about people who bulk up dropping body fat, not fat people who do nothing and try to lose weight. There's a huge difference between a trained and untrained individual.
TecKnoe, most doctors suck at helping people body build. But with Crohn's, it may be something you seek out advice for. My wife's side of the family has a lot of similar issues (3 people with UC including my wife and her mother, 1 with Crohns who had to get a liver transplant), so I'm more familiar than most as to what it entails.
But don't get fat just to get fat. Figure out what your maintenance calories are and eat 300-500 more than that every week. It's going to take time to see results. Stop worrying about supplements and get that shit sorted out first. You can supplement out the ass, but until you get your diet in check, you'll never put on weight. This is coming from someone who was 130 lbs at 5'10" as an adult. You want to do a slow bulk, increasing body fat minimally while adding as much muscle as you can. You basically want to eat just enough to maximize your muscle gains, but not so much that you're just putting on extra fat (a little fat will come with a slow bulk, due to most people erring on the over-eating as opposed to under-eating, thereby maximizing their muscular gains).
Eating should become a part time job. I would be sitting there at work counting up calories in my head all day. It eventually got to the point where I could ballpark most foods and keep a running tab in my head. But that's not for everyone. Get an app for your phone, carry a log book, whatever, just do something to track your calories. If you eat more than your maintenance, you absolutely will gain weight.
