exercise. it increases metabolism, energy levels, and appetite. eat 4 small meals per day plus snacks. so basically you should be eating like every 2 hours. drink water but between meals. sip it all day. you dont need to do protein shakes and bars and all those gimmicks. if you eat correctly (ie no processed and refined foods) you should be ok. you want to eat calorie dense foods but at the same time you dont empty calorie foods. you still want nutrient dense foods. carbs are quick energy, but they, like protein, only have 4 calories per gram. fat has 9 calories per gram. you can eat fat and be fine. the whole fat thing is a myth and you've been lied to. empty carbs are the problem with obesity and all the other diseases, hence stay away from them. fat doesnt make you fat. it is the unused calories that make you fat. but if you want to gain weight, you want muscle, not fat. and you can only get that by working out. dont count calories. dont even look at it. count portion size. dont worry about the scale. pay attention to what you look like in the mirror.
anaerobic training (ie weights) is better than aerobic (ie cardio - running, stairmaster). if you dont want to do weights, then do yoga or pilates. work out like 3-4 times per week for like 30-60 min each time. if you want to know how to use weights, go to http://www.t-nation.com. my brother, who is my personal trainer, highly recommends this site. it also talks about nutrition there as well. perhaps set up an acct there and ask this question on their board. the people there are very helpful.
that is quite a lot, but it is also just the bare basics with a lot of gaps left for you to fill in, but it should get you started. best of luck!
Crohn's since 1993 (17 yrs old then)
surgery in July '05 - removal of 2 inches at ileum and 8 inches of sigmoid colon (had fistula into bladder)
Nov '05 developed colonic inertia; July '06 told i needed ostomy surgery
began maker's diet in August '06 - now feeling the best ever with no symptoms of colonic inertia and i kept my colon
med free as of 10/31/07