Collagen supplements: Are they healthy and useful?

Is collagen safe to use? Does it do what marketers claim? Is it useful in the long run? Collagen is a crucial protein that maintains the structure of skin, muscles, tendons, ligaments, and bones. As people age, collagen production decreases leading to wrinkles and joint pain. Supplements can help but must be chosen carefully for quality. Foods like bone broth and fish are rich in collagen.