I read this article yesterday and bought collagen supplements for DH (vegan) and myself (marine) today. I thought collagen supplements were pointless until I read this but they seem to be getting a bit more evidence behind then now (though nothing definitive)
www.theguardian.com/science/2022/nov/06/initially-i-thought-it-was-a-scam-can-collagen-really-turn-back-the-clock
Do you take collagen and have you noticed a difference?