Bone Broth Unlikely to Provide Reliable Concentrations of Collagen Precursors Compared With Supplemental Sources of Collagen Used in Collagen Research

Alcock RD, Shaw GC, Burke LM · International Journal of Sport Nutrition and Exercise Metabolism

Bone broth contained significantly lower and highly variable concentrations of the key collagen-precursor amino acids compared with a 20 g collagen supplement dose (p = .003-.004); the authors conclude broth cannot reliably deliver the doses used in collagen research.

Population

Amino acid analysis of commercial and home-prepared bone broths (no human subjects)

Intervention

Standardized and variable bone-broth recipes analyzed for glycine, proline, hydroxyproline, hydroxylysine, lysine, leucine

Comparator

A 20 g reference dose of collagen supplement

Limitations

Chemical analysis only; no health outcomes measured; recipes tested may not represent all broths.