Thanks for sharing, that was an interesting read.

We are genetically built by the decisions our ancestors made. As far as I know everybody can eat cereal grain, that was a massive challenge for our ancestors who until then we're meat eaters. I can eat dairy products, a lot of people from other areas cannot, like my wife who is from Asia.

Off topic, but I find it fascinating, animals create their own vitamin c but humans don't. I read it's from an evolutionary mutation where our genes for vit c got turned off.