Collagen supplements may improve skin and reduce osteoarthritis pain, but new research finds little evidence for workout or recovery benefits.

Dermatologists are celebrating.

How much collagen you should take depends on your diet, age, health needs, and the form of the supplement, since there are no official daily guidelines. Research suggests that 2.5 to 15 grams of ...

Lindsey DeSoto, RD, is a nutrition writer, medical reviewer, and registered dietitian who helps clients improve their diet for health-related reasons. Her writing covers a variety of topics, including ...