The actual efficacy of collagen as a supplement is highly debated: is it an effective tool for the skin and joints, or simply a costly source of protein whose benefits are overestimated?

noli's read

The community is deeply divided, oscillating between very positive testimonials regarding aesthetic aspects (skin, nails) and marked skepticism based on digestive biology. Scientifically, the body does indeed break down collagen into amino acids, as highlighted by Harvard T.H. Chan School of Public Health, suggesting that sufficient overall protein intake could render the supplement unnecessary. However, meta-analyses (e.g., studies on collagen peptides) suggest modest benefits for skin elasticity and joint comfort, although the quality of evidence is often limited by industry funding bias and high heterogeneity of dosages. It is established that collagen alone does not guarantee the synthesis of bodily collagen without cofactors like vitamin C. Claims of overall 'rejuvenation' remain largely devoid of solid evidence. In summary, while collagen may help in reaching certain nutritional goals, its specific 'magic' effect on beauty is often exaggerated.

the sources

1. 1r/Supplements