WHAT ARE COLLAGEN PEPTIDES?
Collagen peptides are small pieces of collagen protein made by breaking collagen down so it can be used in foods and supplements.
WHAT IT MEANS
Collagen peptides come from collagen, a structural protein found in tissues such as skin and tendons. Supplements are often marketed for these tissues, but a marketing claim is not proof of a benefit.
A PRACTICAL EXAMPLE
A powder labeled hydrolyzed collagen is one form of collagen peptides.
IMPORTANT LIMITS
Studies of collagen supplements with exercise have produced some promising findings, but results depend on the product, population and outcome. Taking collagen does not guarantee tendon repair or relief from joint pain.
FREQUENTLY ASKED QUESTIONS
Does a collagen supplement repair an injured tendon?
That cannot be assumed. It is not a replacement for assessment and an appropriate rehabilitation plan.
RELATED READING
Strength Training Supplements After 40 · Protein
SOURCES
Collagen peptides with physical training, systematic review
15-week resistance-training trial