Collagen can be obtained exclusively from animal sources.
Bones, head, cartilage, generally from cows and pigs. If all this appeared on the labeling of the supplements sold, people would think twice before buying it.
Wait, don't get ahead of yourself, maybe you're thinking that marine collagen exists, which sounds great (congratulations to the marketing team of those companies) but the reality is very different.
It is obtained from the fins and bones of fish, often through practices that are not very ethical or respectful towards animals.
But what if there was a way to obtain collagen in a more sustainable way?
There is, and it can be obtained from a source that would otherwise simply be food waste.
I'm talking about collagen from the eggshell membrane.
Have you ever noticed when making a hard-boiled egg that when you remove the shell it is closely attached to a membrane that looks like skin? This membrane is especially rich in collagen, hyaluronic acid and elastin.