The Science of Appetite

Nature prefers you fat, but you can take control. New research could explain better approaches to dieting and how to curb your appetite

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.

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