Collagen supplements have become one of the most popular products in the wellness industry, promoted for everything from younger-looking skin to stronger joints and better athletic performance. Now, the largest review of research conducted so far suggests that some of those claims are backed by evidence, while others are not.
Published in the Aesthetic Surgery Journal Open Forum, the new study combined findings from 16 systematic reviews, 113 randomized controlled trials, and nearly 8,000 participants from around the world. Researchers found that collagen supplementation can provide measurable benefits for skin health and osteoarthritis symptoms, but offers little help when it comes to boosting sports performance.
Largest Review of Collagen Supplements to Date
The research was led by scientists at Anglia Ruskin University (ARU), who carried out what they describe as the first integrated meta-analysis and meta-regression spanning all major health areas linked to collagen supplementation.
By examining such a large body of evidence together, the team was able to identify patterns related to both dosage and duration of use. The analysis showed that people who took collagen for longer periods tended to experience greater improvements in skin hydration and elasticity. Longer supplementation was also associated with reduced pain and stiffness among people with osteoarthritis.
