Krehl went on to study two obese women, average weight 286 pounds, for 10 weeks on a 12 gm, 1200 calorie low carbohydrate diet and recorded weight losses averaging a half pound daily.’0 He then described this as âœcommensurate with caloric restriction and exercise.â (Three hours a day.) But is it? To lose a half pound per day, a woman would have to bum up 1750 calories a day, over and above the 1200 calories she was eating on Krehl’s diet. That means that Krehl assumed these women, one of whom had a basal metabolism 18% below the norm, would normally bum up 2950 calories a day. The accepted theory, however, is that the average obese woman does not lose weight on 2000 calories a day. Therefore, to me, Krehl’s figures conceal a metabolic advantage of 950 calories a day or more.
Still not convinced? Try this one. The AMA panel of nutrition experts, most of whom certainly read the American Journal of Clinical Nutrition, failed to acknowledge an important paper by Charlotte Young, professor of Clinical Nutrition at Cornell University, published in that journal just two years before.’1 This time, the subjects were overweight young men, and the three diets compared were of 1800 calories, all with some degree of carbohydrate restriction. The diets contained 30, 60, and 104 gms of carbohydrate and were followed for nine weeks. Young and her colleagues calculated body fat through a widely accepted technique involving immersion under water. Those on 104 gms lost slightly better than 2 pounds of fat per week, out of 2.73 pounds of total weight loss not bad for 1800 calories. Those on 60 gms lost nearly 2.5 pounds of fat per week, out of 3 pounds actual weight loss better. Those on 30 gms, the only diet which produced ketosis and, presumably, FMS, lost 3.73 pounds of fat per week approximately 100% of the weight they were losing each week.
We should forgive Dr. Young for editorially concluding that she preferred the 104 gm diet she had been working with for twenty years. After all, she had published the fourth peer reviewed medical study demonstrating the metabolic advantage of the ketogenic diet and quantitated it rather accurately. Look at her figures. These young men, by dropping 74 gms of carbohydrate and replacing it with 300 calories of protein based food, will lose an extra 1.7 pounds of body fat each and every week. In other words, if they were to replace their cereal, banana, and skim milk with a ham and cheese omelet every day for 30 weeks, they will lose 51 more pounds of fat than if they stayed with the cereal.
That’s the edge the frustrated, struggling dieter needs. That’s what metabolic advantage provides. That’s what has enabled most of my patients to succeed. That’s what has made the Atkins Center a success, and that’s what will make you a success.