Of course, how dare I.

Okay.

https://pmc.ncbi.nlm.nih.gov/articles/PMC4067985/

https://pmc.ncbi.nlm.nih.gov/articles/PMC2953791/

https://academic.oup.com/gbe/article/15/4/evad054/7092825

I could find hundreds of references if I was being paid, it’s a very well established fact. It’s the reason organ transplant matches can be very difficult to find for people with African ancestry.

Honestly it’s a bit weird to come back and see I’ve been downvoted. Echoes of Lysenkoism.

Is RFK talking out of his arse? Most likely. But there is a lot more MHC variation amongst Africans, I don’t know if that extends to African-Americans because they were mostly taken from a small area. So there are undeniable, medically relevant differences between ethnicities when it comes to the immune system.