Salmon

Lean sources of protein help you feel full without adding fat. However, 50 percent of women ages 18 to 50 don't know if they get enough of this essential nutrient. Up your intake with salmon; it's a leaner choice than red meat and is chock-full of MUFAs to boot. A 2001 study found that dieters eating a MUFA-rich diet lost an average of 9 pounds, while their low-fat diet counterparts gained, on average, 6.

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