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F-Factor diet

The F in F Factor Diet stands for fiber - a key element of this eating plan developed by nutritionist Tanya Zuckerbrot. Fiber adds bulk to meals - which means you feel full, not hungry.

By Zeel Editorial Staff, Last updated: August 15, 2012

F-Factor Diet Overview

The F in F Factor Diet stands for fiber—a key element of this eating plan developed by nutritionist Tanya Zuckerbrot. Dieters following the F-Factor diet eat regular meals (breakfast, lunch, dinner and a snack) containing plenty of fiber.

Fiber adds bulk to meals, which means you feel full, not hungry.

When invented: The diet was created in the 1990s. Its bible, The F-Factor Diet: Discover the Secret to Permanent Weight Loss, was published in 2006.

Who invented it: Tanya Zuckerbrot, a registered dietitican, created the diet and authored The F-Factor Diet. She has given her blessing to a line of F-Factor natural high-fiber foods that will debut in 2011.

Length of diet plan: The jump-start phase of the F-Factor diet lasts two weeks. The second phase involves following the diet until goal weight is reached. The F-Factor diet then enters a maintenance phase, meant to last a lifetime. Dieters are asked to keep a food journal to keep consumption on track.

Celebrity Devotees

Rachael Ray and Lo Bosworth depend on the F-Factor to keep trim.

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