A recent meta analysis suggests the positive results for collagen are mostly funding bias. See discussion here: https://massresearchreview.com/2025/09/29/conn

A recent meta analysis suggests the positive results for collagen are mostly funding bias. See discussion here: https://massresearchreview.com/2025/09/29/connecting-the-dots-for-connective-tissue-outcomes-an-update-on-the-collagen-supplementation-debates/ https://massresearchreview.com/2025/09/29/connecting-the-dot... I have been taking collagen, but will likely stop.