I dropped 40lbs in less than 3 months last year so I can definintely relate to weight loss during a flare. I went from 168 to 128 in no time. Even after being out of the flare for the past few months, I've still had enough bad days that have lost me another 5-7lbs.
Even if you're eating, the small intestine in Crohn's Disease doesn't always properly absorb the nutrients your body needs to stay well & fit, like fat & calories. That's my understanding, anyway. Recently, on good days, I've eaten nachos and cheeseburgers but haven't put any weight back on. But my illness isn't quite under control right now either so that is probably why.
Diagnosed in October, 2004 at age 32.
Current Rx's: Colazal (generic), Omeprazole, Ferrous Sulfate, Librax, One-A-Day multivitamin, Probiotic, Omega-3 Fish Oil, Vitamin D, Vitamin A, Calcium-Magnesium-Zinc, Cranberry pills
Secondary conditions: mouth ulcers, joint pain, swelling ankles, extreme fatigue
Previous/occasional Rx's: 20mg Prednisone taper, Flagyl, Levaquin
No surgeries to date