We'd need to define "aging". The doctor says there's not enough evidence that collagen supplements are "anti-aging." Ok. Even if true, there are 12 systematic reviews evaluating oral collagen in humans. All of them conclude that collagen leads to improved skin health (hydration, wrinkle reduction, appearance). The way collagen works is by stimulating our own skin cells to produce more collagen & hyaluronic acid. Is that "anti-aging"? No? Alright. Then who cares? The important thing is that collagen works, and the doctor is simply muddying the waters.
