The statement "I have worked with patients who have made tremendous behavior changes in terms of exercise and healthy eating and haven't lost as much weight as their physicians expected." applied to me when the healthy eating was the low-fat diet. Switching to the low-carb diet of course resulted in the weight loss that my doctor wanted. I actually tried much harder on the low-fat diet and gained weight. The low-carb diet has resulted in an easy weight loss for me.