My son was very, very sick when he was first diagnosed. Serious weight loss (down to almost 56lbs at one point), severe cramping pain, fever, diarrhea, vomiting, joint pain, headaches, etc. We started him on the SCD diet and saw almost all the symptoms gone in almost 2 weeks. He could barely walk and in two weeks he put on several pounds and could jog around a little. I really believe in this diet - may not help everyone but we really saw it work! Unfortunately, since he is a teenager, he didn't stick to it over the past couple of years and so has been up and down with his Crohn's and flaring, also on Prednisone a couple times. He is actually going back on the diet tomorrow - I think he finally got tired of feeling sick and decided he wants to try it again, even though it's restrictive. We'll see how it goes this time around and I will try to update on how long it takes to see improvement. He is currently off of all meds but experiencing weight loss, nausea, cramping, and chronic diarrhea, so we are going back to the diet and see what happens...