Egg Protein Boosts Muscles and Energy Levels: Study

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The high-quality protein in eggs makes an important contribution to muscle strength, energy and a sense of fullness, according to U.S. researchers who reviewed more than 25 protein studies.

One egg provides 13 percent of the recommended daily value of high-quality protein that helps preserve muscle mass and prevent muscle loss in older adults, said review co-author Donald K. Layman, professor emeritus at the University of Illinois, United Press International reported.

"While many Americans may be getting enough protein, they need to focus on consuming sources of higher-quality protein," Layman said in a news release.

Along with benefiting muscle strength, the high-quality protein in eggs provides steady and sustained energy, the researchers said. That's because egg protein doesn't cause a surge in blood sugar or insulin levels, which can lead to a rebound effect or energy "crash" as levels drop, UPI reported.

The review was published in the journal Nutrition Today.