Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Amino acids and proteins play a foundational role in supporting the skeletal system, primarily by providing the building blocks necessary for bone matrix synthesis. Collagen, the most abundant protein in bone, is composed of specific amino acids such as glycine, proline, and lysine. Adequate protein intake is essential for optimal bone health, as it enhances calcium absorption and stimulates the production of insulin-like growth factor 1 (IGF-1), which promotes bone formation. Several scientific studies have demonstrated that higher dietary protein is associated with increased bone mineral density and reduced fracture risk, especially in older adults (Rizzoli et al., 2014).

However, the overall effect size is moderate, and results can vary depending on the population studied and concurrent calcium intake. While individual amino acid supplements are not typically recommended solely for bone health, protein blends are recognized as supportive, especially when combined with adequate calcium and vitamin D. Therefore, the use of amino acid/protein blends to support the skeletal system is scientifically validated, though the evidence is not as robust as for other interventions such as calcium or vitamin D.

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