Can Crash Diets Be a Good Way to Lose Weight?

Dropping pounds quickly could cost you, even within a week.

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[Revising Your Diet? Emphasize Plants]

Bottom line: Crash diets are a quick but deceptive fix. "They patch things up instead of addressing the larger issues: cutting down portions, eating five or six meals a day to speed up your metabolism, and getting a variety of foods," White says. "If you need to look good for a wedding or class reunion, do yourself a favor and plan ahead."