Considering collagen is just a regular protein shouldnt it be digested into amino acids before being absorbed and have no medical/cosmetic effect beyond being a source of protein just like eating a steak or an egg?
In: Biology
There had been some small scale studies that have said that oral collagen supplementation can help with skin elasticity, its fairly inexpensive, and has little downsides.
The rest is my own speculation:
I suspect that consuming it just allows for a guarantee that the precursor amino acids are available for your body to use to allow for upkeep to your own collagen. You could likely get a similar effect from just consuming equivalent amounts of the raw amino acids, but this would require more processing and money to manufacture than just using what would otherwise be waste from the meat industry.
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