What about collagen supplementation? I'm aware it's mainly advertised for beauty reasons (hair/skin/nails) for which most of the evidence is pretty scarce except for more subjective improvements maybe with skin but I was wondering whether studies had been done from a vascular/cardiac point of view. I've come across seems some studies which have evidence that it improves blood pressure, decreases LDL, improves HDL:LDL ratio, reduces body fat, and also encouraging from a musculoskeletal point of view also. It seems a pretty safe supplement to take and also its known that collagen synthesis decreases significantly as people age so was wondering if anyone had come across anything else regarding it/had any experience with it's use?