5 mistakes that will sabotage a healthy diet

Excluding the wrong foods and following eating plans that are too restrictive may do more harm than good.

If you've ever made a New Year's promise to eat more healthfully, then you know how easy it is to slip back into less healthy eating routines. "People go into these plans with the best of intentions, but sometimes they don't have the best information to support their changes," explains registered dietitian Kathy McManus, director of the Department of Nutrition at Harvard-affiliated Brigham and Women's Hospital (www.brighamandwomens.org).

Whether you've chosen an eating plan to lose weight or to address a health problem (for example, a low-salt diet to help lower your blood pressure), it's important to understand the little things that can throw you off track.

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