If collagen provides strength and flexibility to the skin, nails, joints and bones, but only received in the digestion of animal products, fish gelatin, how do vegatarians produce collegen.. Does anyone know.
Collagen is a protein, and our bodies assemble proteins from amino acids. As long as you are eating sufficient amounts of all the essential amino acids (9 or so different ones), the body will synthesise all the proteins and non-essential amino acids it needs. Trust me, I have a uni course in principles of protein structures