This is true for celiac. We have evidence that it's been around for at least a couple of thousands of years, and people died from it. https://www.nature.com/ar

This is true for celiac. We have evidence that it's been around for at least a couple of thousands of years, and people died from it. https://www.nature.com/articles/nature.2014.15128 https://www.nature.com/articles/nature.2014.15128