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What is the Zone weight loss program?
 The Zone weight loss program is described by Barry Sears, Ph.D., in his book
The Zone: A Dietary Road Map. It recommends balancing one's intake of protein,
carbohydrates, and fat so that, along with every 7 grams of protein, 9 grams
of carbohydrates and 1-1/2 grams of fat are eaten. Carbs contribute about 40%
of total calories on the Zone weight loss program, while fats and proteins
each contribute about 30% of the calories. (This varies from current dietary
recommendations from the American Heart Association and similar groups, which
recommend 30% of calories from fat, 55-65% calories from carbohydrates, and
10-15% of calories from protein.) Serious athletes are advised to ingest 3
grams of fat for each 7 grams of protein, resulting in a diet in which approximately
40% of calories are supplied by fat. Sears believes that the Zone weight loss
program, which restricts calories, carbohydrates, and saturated fats, and limits
protein to the amount required for the individual (which depends on the individual's
lean body mass and activity level) prevents excess formation of insulin and
leads to optimum mental and physical performance (i.e., "being in the
Zone"). The goal of the diet is to switch the body's metabolism from a
carbohydrate-burning mode to a fat-burning mode.
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