Christopher EllisCEO Dynamic Physio Therapy

Collagen Loss: Why You're Losing It and How to Fix It #shorts

5 Sept 2026 · 1 min

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In this short, Christopher Ellis explains that humans lose roughly 1% of collagen each year, resulting in about a 40% loss by age 40. He links poor biomechanics—specifically overpronation in runners—to uneven strain on the Achilles tendon. Because the tendon has a limited blood supply, it recovers more slowly than the surrounding muscle belly, which can exacerbate injury risk.

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In fact, you lose about 1% of collagen per year. So by the time you're 40, you've lost about 40% of your collagen. Poor biomechanics can do this. So if you're like a runner again, and you're an overpronator, this could lead to a difference in the way the Achilles is being strained. Maybe it's strained in one portion of the Achilles. What they've done is allowed the muscle belly to recover. And remember that the tendon has poor blood supply, so it takes a little longer for the tendon to recover. So that's another reason this happens.