The benefits of eating protein powder for the elderly: 1. It can prevent the occurrence of muscle wasting sign, because the important raw material of muscle is protein, by eating protein to supplement the raw material of muscle composition, the benefits in preventing muscle wasting sign for the elderly are very obvious. 2. 3, can promote the smooth biochemical metabolism of the body, because many enzymes and coenzymes in the body are composed of raw materials are protein, the elderly by eating protein powder to supplement the raw materials needed for enzymes, has a very good benefit to promote the metabolism of the body.