Impact
High effect
Typical dose:500–2000 mg
Proline is a critical building block for the collagen that forms about 30% of bone mass. Supplementing with proline supports the synthesis of this flexible framework.
- Focuses on
- Most relevant for
- People interested in the basic amino acid building blocks that comprise the structural collagen framework of bones.
Potential benefits
- Collagen Matrix Formation.Unconfirmed. Proline is an essential component of type I collagen, the protein that provides bones with their flexible framework, though oral supplement benefits for bone health remain unproven.
- Amino Acid Stimulation.Unconfirmed. Research indicates that providing a full profile of amino acids can stimulate bone collagen synthesis, although this effect has not been specifically isolated for oral proline supplementation.
Limitations
- Absence of Clinical Trials.There is a lack of evidence from human trials showing that proline supplementation prevents bone loss, strengthens bones, or reduces fracture risk.
- Indirect Research.Available studies primarily use proline as a measuring tool to track bone formation rates rather than testing it as a therapeutic intervention for bone health.
- Limited Applicability.Research identifying proline's role in bone fragility often focuses on genetic mutations rather than nutritional deficiencies that could be corrected with supplements.
Study evidence
2 studiesProline is involved in the collagen that supports bone, but the supplied evidence does not show that taking proline strengthens bones. Research on collagen formation and inherited collagen disorders cannot establish benefits from an ordinary oral proline supplement.
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