Collagen and biotin supplements gain popularity for skin and joint health

Dietary supplements such as collagen, biotin, and probiotics are increasingly popular for addressing skin and joint health. Research suggests that hydrolyzed collagen peptides may modestly improve skin hydration and elasticity, particularly in older adults, especially when consumed alongside vitamin C. However, experts note that evidence for hair and nail benefits remains inconsistent and many studies are funded by manufacturers.

Biotin, or vitamin B7, is primarily effective for skin issues like dryness or scaly patches when a person is experiencing a deficiency. While it is a water-soluble vitamin found in foods like eggs and nuts, overall evidence for its use in healthy individuals is limited.

In the context of joint health, collagen is a vital structural protein for bones, tendons, and ligaments. Some consumers have reported using grass-fed collagen peptides as an alternative to over-the-counter pain medications for managing joint stiffness and pain, with some users also noting improvements in hair and nail health.