Pork rind is the absolute richest food in collagen, and collagen is not a protein with high biological value because it does not contain sufficient essential amino acids. In an optimal diet, collagen should constitute no more than 30% of the daily intake. If this limit is exceeded, absolutely nothing happens, just think of the millions of vegans in the world: even plant proteins do not contain enough essential amino acids. However, if we want to optimize our diet, collagen should provide at most 30% of the protein consumed daily.