Whey Protein Cuts Liver Fat Production and Speeds Muscle Fat Use.
Combining low caloric intake, increased protein intake and exercise preserves muscle mass and cuts fat. Whey protein is particularly effective for decreasing appetite and promoting weight loss. High protein meals suppress appetite by maintaining steadily levels of blood sugar. The body breaks down proteins in amino acids, which the liver can convert to blood sugar in a process called gluconeogenesis. Protein acts like a timed released blood sugar pills to prevent hunger and maintain energy levels. Japanese researchers— in a study on rats— found that whey protein, but not casein, had a direct effect on fat metabolism. Rats fed whey protein showed decreased fatty acid synthesis in the liver, but increased fat use in muscle. These effects were similar in rats that exercised, but were similar rats that exercised, but were not fed any protein supplement. Whey protein supplements, particularly when accompanied by exercise, reduces fat production in the liver and promotes fat use for fuel in muscles. (Nutrition, 21: 1052-1058, 2005)
-Muscular Development, Volume 43, January 2006, page 132.
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