I learned recently that elephants rarely get cancer, they have about 70 times more tissue mass than us so they should be 70 times more likely to get cancer, but they don't. They hardly ever get cancer. Their bodies have a defence against cancer that we don't have. They have something extra to protect them.
I wonder what country has the lowest cancer rate and what country has the lowest heart disease rates, perhaps we could learn something from them, I am curious now.