Collagen is sometimes sold as an immune booster. The evidence does not support that. Collagen is a structural protein, and its main roles are in skin, bone, cartilage and tendon. This page covers the small, real links between collagen and the body's defences, and where the claims go too far.
Skin as a barrier
Skin is the body's first physical barrier, and collagen sits in the dermis beneath the surface. Studies of hydrolyzed collagen have mostly measured skin elasticity and hydration. None have shown that taking collagen lowers the number of infections a person gets.
Wound healing
The body uses collagen to repair tissue after an injury. That is collagen the body makes itself, from protein in the diet. Enough protein matters for healing, and collagen is one protein source among many, though an incomplete one, since it lacks the amino acid tryptophan.
Glutathione
Glycine, which collagen contains, is one of the three building blocks the body uses to make glutathione, an antioxidant. It has not been shown that taking collagen measurably raises glutathione levels or strengthens immunity.
What does support immune health
The measures with the strongest evidence are recommended vaccinations, enough sleep, a varied diet with fruit, vegetables and adequate protein, regular activity, and washing hands. If you get frequent or unusually severe infections, see a doctor.
Where collagen fits
Take collagen for skin and joints, as a daily habit. What is collagen? explains the protein, and the comparison page helps you choose between our four collagen products.
This article is general information, not medical advice. NewYou products are food supplements and are not intended to diagnose, treat, cure or prevent any disease.
Related reading
If you want a daily collagen to go with this, see NewYou Collagen Essentials, unflavoured marine collagen.
