The Science of Appetite

The Big Three
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The Weight Watchers Diet

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Philosophy Portion control. Nothing is off-limits, but everything must be in moderation.

How It Works Smaller portions mean fewer calories are taken in, so less fat gets stored. A point system assigns a value to portions of all sorts of foods to help tabulate—and limit—daily consumption. To lose half a kilogram a week, you generally need to consume 500 fewer calories a day.

Downside Hunger. Small portions can leave stomachs growling.

Next: The Ornish Diet >>

What the World Eats, Part I

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