Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Whey protein is scientifically validated for its role in supporting healthy aging, particularly through its effects on muscle mass and function. As people age, they naturally experience sarcopenia, which is the progressive loss of skeletal muscle mass and strength. Numerous clinical studies have demonstrated that supplementation with whey protein, especially when combined with resistance training, can help slow or partially reverse sarcopenia in older adults. Whey protein is rich in essential amino acids, particularly leucine, which is a key stimulator of muscle protein synthesis. Meta-analyses and randomized controlled trials have shown that older adults consuming higher levels of high-quality protein such as whey preserve more muscle mass, have improved strength, and experience better physical function compared to those with lower protein intakes. Additionally, whey protein may help support immune function and maintain metabolic health in the elderly. While not a “treatment” for aging itself, the evidence supports whey protein’s use as a preventive strategy to mitigate certain age-related declines, especially in muscle health. Clinical guidelines for older adults commonly recommend increased protein intake, and whey protein is often cited as a practical and effective option. Thus, the use of whey protein for supporting healthy aging is based on robust scientific evidence.

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