What the Experts Say About The Pritikin Principle

There seems to be little dispute that you will lose weight on the Pritikin diet or that it is generally a nutritionally rich diet low in calories. But there are caveats: "Because fat makes one feel full, the extremely low fat content of this diet will make those following it often feel hungry," says Teryl L. Tanaka, RD, the clinical nutritionmanager at the Santa Monica UCLA Medical Center. Consequently, she adds, the likelihood is high of the weight returning after one stops strictly adhering to the diet.

James Hill, PhD, the director of the Center for Human Nutrition at the University of Colorado Health Sciences Center in Denver, agrees that the diet is not practical for many people. While observing that people staying at the Pritikin Centers do really well losing weight, he asks: "How realistic is the diet once they get away from the centers and into the real world?"

Both the Pritikin diet and the nutritionally similar Ornish diet are extremely low in fat, Hill notes, down to 10% of total calories. "Yes, if we could do that we would all be healthier, but it is very hard to follow that formula in our environment," he cautions. "It's difficult to maintain such a low-fat content of our diets if you eat out often, and it takes time to prepare good,-tasting low-fat food. Most people do not have the time to spend hours each day preparing food."

Another problem, adds Tanaka, is that the low-fat content may actually be harmful to our health, "Pritikin also inhibits the intake and absorption of fat soluble vitamins, and can even limit the amount of essential fatty acids provided by the diet needed for normal cell function, healthy skin and tissue, growth, and development."

Food For Thought

What do most nutritionists and health authorities like about the diet? Its strict limit of animal products -- often associated with a variety of major diseases -- and that it incorporates exercise and stress reduction, along with overall low calorie intake. But this is qualified with a concern that the extremely low-fat regimen is difficult to stick with over the long haul.