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www.webmd.com

Collagen Benefits: What You Need to Know - WebMD

Collagen is a protein responsible for healthy joints and skin elasticity or stretchiness. It's in your bones, muscles, and blood, making up three-quarters of your skin and one-third of the...

nutritionsource.hsph.harvard.edu

Collagen • The Nutrition Source

In food, collagen is naturally found only in animal flesh like meat and fish that contain connective tissue. However, a variety of both animal and plant foods contain materials for collagen production in our own bodies.

www.everydayhealth.com

What Is Collagen? Health Benefits, Risks, More

Aug 22, 2025 · Collagen is present in your skin, tendons, muscles, bones, and hair. When your body’s collagen levels drop and skin collagen begins to break down, you may notice wrinkles or sagging skin,...

www.medicalnewstoday.com

Collagen supplements: Benefits, safety, and effects

Sep 15, 2025 · There is mixed evidence on whether collagen supplements work, but some research has had promising results, showing an improvement in skin elasticity and toughness, and a reduction in wrinkles....