The slow evolution of humans seems to be accepted among scientists.
We have spent millions of years eating something different than agricultural products. Maybe our bodies are not accustomed to something drastically different.
>>> “The researchers also found that 1% of the Denisovan genome hails from the genes of an unknown ancestor, from an interbreeding event that must have happened, roughly, a million years ago.”
www.sott.net/article/439398-Nested-DNA-of-ancestor-that-mated-with-humans-discovered