Weight Loss: Diets with high protein content and a low glycemic index may improve overweight people's ability to maintain weight loss, according to a study in the New England Journal of Medicine.

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Their milk boasts a higher fat and protein content which can be used for cheese, skimmed milk powder and other high-fat products.

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Others are a little more curious: Eggs make the cut despite their high cholesterol content because they are cheap and packed with protein and nutrients.

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He maintains that its high levels of protein and affordable price outweigh its huge saturated fat content.

FORBES: Cheap Foods That Are Good For You