And as long as we are on the topic of diet gurus and their own lives, here is how long they have lived: (From July '12 issue of Wired US)
Stuart Berger, The Southampton Diet, Immune Power Diet, 40 years.
Judy Mazel, the Beverly Hills diet, 63 years.
Paavo Airola, Juice Fasting, 64 years.
Michel Montignac, Eat Yourself Slim, 65 years.
Adelle Davis, Nutrition and Unprocessed Food Oracle, 70 years.
Elie Metchnikoff, Yogurt, 71 years.
J.I. Rodale, Organic Food, 72 years.
Robert Atkins, Atkins Low Carb diet, 72 years.
George Ohsawa, Macrobiotics, 73 years.
Average U.S. life expectancy, 78.7 years.
Roy Walford, 120-Year Diet, 79 years.
John Harvey Kellogg, Corn Flakes (and Kellogg Health Sanitorium) 91 years.
Linus Pauling, Vitamin C, 93 years.
Ancel Keys, Mediterranean Diet, 100 years