Whey protein is a high-quality, rapidly absorbed protein derived from milk. It is widely studied for its effects on muscle protein synthesis, metabolic health, and ageing.
Unlike many plant proteins, whey contains a complete amino acid profile and is particularly rich in leucine, a key amino acid that stimulates muscle protein synthesis. This makes it especially relevant for maintaining muscle mass and strength over time — a critical factor in healthy ageing.
Whey protein provides:
- Complete essential amino acid profile
- High leucine content — key trigger for muscle protein synthesis
- Bioavailable protein — rapidly absorbed
- Bioactive peptides — potential metabolic and immune benefits
This makes whey one of the most effective dietary proteins for supporting muscle and metabolic health.
Randomised controlled trial
Meta-analysis of RCTs: whey protein supplementation significantly reduced BMI, body fat mass, and waist circumference
View study on PubMed →Meta-analysis
Whey protein supplementation improved muscle mass and function in older adults.
View study on PubMed →Randomized Controlled Trial
Whey protein and resistance training reduced sarcopenic obesity and improved muscle mass and strength in older women
View study on PubMed →Whey protein is one of the most effective and well-studied tools for preserving muscle mass and function. Given the central role of muscle in metabolic health, mobility, and ageing, ensuring adequate intake of high-quality protein — particularly leucine-rich sources like whey — is a cornerstone of any evidence-based longevity strategy.
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