Collagen supplements have exploded into a multi-billion dollar market. Collagen is the most abundant protein in the body — essential for skin elasticity, joint health and bone strength. Proponents claim daily collagen supplementation visibly improves skin, reduces joint pain and supports gut health. The science is genuinely mixed. Some studies show real benefits for skin elasticity and joint pain. Critics argue that collagen is just a protein that gets broken down by digestion like any other, and that the body cannot preferentially direct it to skin or joints. New collagen-infused products — kefir, coffee, protein bars — are everywhere in 2026. Should you actually take collagen supplements every day?
