Hydrochloric acid is essential for mineral ionization, absorption, and utilization in humans.

“and um you know we are very very unique primate species in that root in that regard uniquely adapted to eating animals we are uniquely adapted to eating animals there's no question for that now you know um you know the question becomes you know so and you know we know from the stable isotopic research happening at the max planck institute of evolutionary anthropology and leaps of germany and all of that that you know our prehistoric ancestors weren't just carnivores they were very high level carnivores in excess even of many of the other carnivorous animals that we co-evolved with”