Evidence supporting the use of: Collagen (unknown source)
For the body system: Structural System

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Collagen is a protein that forms a major structural component of connective tissues such as skin, cartilage, bone, and tendons, making it directly relevant to the Structural System of the body. The traditional use of collagen-rich foods for joint and bone health has a long history in various cultures. More recently, scientific studies have investigated the effects of oral collagen supplementation (from sources such as bovine, porcine, marine, or unspecified/unknown origins) on joint health, skin elasticity, and bone metabolism.

Clinical trials suggest that hydrolyzed collagen supplementation can improve skin elasticity and hydration, and may reduce wrinkles in some populations. For the musculoskeletal system, several randomized controlled trials and reviews indicate that collagen peptides may help reduce joint pain associated with osteoarthritis and improve joint function, particularly in athletes and older adults. The evidence for bone health is more limited but suggests potential benefits for increasing bone mineral density in postmenopausal women.

However, the overall quality of evidence varies, and many studies are industry-sponsored or have small sample sizes. The specific impact of collagen from an "unknown source" is less clear, as efficacy and safety can depend on the source and processing method. Nonetheless, the use of collagen to support structural tissues is supported by moderate scientific evidence, especially in the context of joint and skin health.

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