Whey Protein Supplements Preserve Muscle Mass During Weight Loss

Muscle mass is extremely difficult to preserve when cutting fat for a contest. During reduced caloric consumption (dieting), the body uses energy from protein for fuel. In other words, the body feeds on itself. Amy Hector and Stuart Phillips from McMaster University in Canada, and colleagues, found that whey protein supplements could prevent decreases in muscle protein synthesis during weight loss. They studied men and women aged 35 through 65 who consumed 750 fewer calories than normal. The test subjects supplemented their diets with either whey or soy protein. Whey protein effectively prevents decreases in muscle protein synthesis during weight loss. (Journal Nutrition, published online December 17, 2014)

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