Yikes. I am getting a bad vibe from him.

Abstaining from eating for long periods of time can actually put weight on people because the body goes into a starvation mode and stores anything that you do eat as fat. People are much better off eating 6 small meals each day consisting of 40% protein, 40% complex carbohydrates and 20% fat. Believe it or not, the body needs fat to function at a healthy level. Good fats though, like salmon, olive oil, and natural peanut (nut) butter, etc. Complex carbs should come mostly from veggies and some fruits. A protein shake with some fruit and peanut butter makes a good meal/snack.

Even though your friend is a pdoc, if he is going to prescribe the meds that put on weight, he should do some research into eating right and tell his patients how to do it right. One yogurt and a dinner are not nearly enough for a person to eat in a day and the few lbs he has put on may be from his witholding food from himself.

Exercise is about 20% of the picture and nutrition, about 80%.

I am easing back into this style of eating and exercising, myself and I have hopes it will put a dent in the 70lbs I have gained over the course of my many med changes, and my current cocktail of Prozac, Depakote, Neurontin, Geodon, propanolol, trazodone, omeprazole, levothyroxine, (I think that's it, I forget right now).