Synopsis

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

Casein protein is scientifically validated as a source of high-quality dietary protein, and its role in supporting the skeletal system is primarily linked to its amino acid content and its contribution to bone health. Casein is a slow-digesting milk protein rich in essential amino acids and is also a good source of calcium, both of which are critical for bone health. Several studies indicate that adequate dietary protein, especially from dairy sources like casein, promotes bone mineral density (BMD) and bone strength. The synergy between protein and calcium in dairy helps maximize calcium absorption and retention in bones, reducing the risk of osteoporosis and fractures. Meta-analyses and observational studies have consistently shown that higher dairy protein intake is associated with improved bone mass, particularly in older adults and populations at risk for bone loss. While casein itself is not a direct bone-building supplement, its nutritional profile supports the body's overall bone maintenance and repair processes. Clinical guidelines often recommend high-quality protein intake, including casein, for optimal skeletal health, especially in conjunction with adequate calcium and vitamin D. Therefore, using casein protein to support the skeletal system is grounded in robust scientific evidence.

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