Donkey skins are being imported to China en masse for use in the ejiao industry, being used as an alternative medicine.
"Collagen in the skin is critical to provide structure and smoothness. As people age, collagen breaks down and this results in more saggy and wrinkly skin," Charles White, a pharmacy professor at the University of Connecticut School of Pharmacy, told."Aging collagen is degraded by oxidative stress and inflammation. If old collagen is removed, it can be replaced with higher quality collagen.
"In models of skin wear and tear, there is some data showing a reduction in wrinkling. However, there is no definitive data in human beings showing that people look younger when they receive donkey collagen or any other form of collagen," White said.
"There is usually a thread of truth in most natural product health claims but those threads are usually very thin," White said."By that, I mean that they might do something to this chemical in cells in an incubator that...are relative to final health outcomes, but when they are used in complex organisms, they do not produce that benefit."
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