I agree more calories should be considered. I went to about 2100 a day also and lost 20 lbs. I lost about 3lbs a week. I continued to lift weights during my radiation in the upper body and lost most of the weight in my lower body which I was not lifting weights in. In hindsite I should have taken in more calaries, continued lifting in my lower body. The only other issue was I had a hard time taking in the 2100 calaries. Not sure if I would have benn able to take in much more. So if he can give it to him assuming you don't want to loose much weight.