I've never seen cancer and autoimmune as opposites in such a clear way. I'm happy I did this research.
It's important we understand and embrace our diversity for many reasons, and one of them is so we can be aware of diseases we are predisposed to. For example, dark skin allows 6 times less vitamin D production than fair skin, leading to a high incidence of rickets, a serious but preventable physical disability. We can't properly capitalize on our strengths or ameliorate our weaknesses if we don't acknowledge they exist.