Losses of 100 pounds in six months are not unusual. Some are not able to do that. Kirschner should know. For the past 22 years he has studied the effects of low-calorie dietary supplements on obesity and weight loss. Such diets are obviously not for everyone.
Many patients find it too hard to give up food completely.
So they eat regular food along with their Optifast, and then don't lose weight. The mother of three entered the program weighing 379 pounds. In five weeks she lost 33 pounds, and hopes to lose 150 to 200 more. They eat their dinner and I drink my shakes. Weekly meetings with dietitians teach patients healthier ways of eating.