Reminds me of reading somewhere about an assumed trade-off in diet between:

(A) longevity

(B) optimisation for high physical/procreational performance

The beef-butter-bacon-eggs diet then would obviously fall in the (B) category.

They don't talk much about cancer. Sure, many cancers are probably caused by metabolic disease and chronic inflammation from too many carbs, which would be prevented by this diet. But intestinal cancer from lots of red meat, isn't that a proven thing as well?