I think it's too simplistic to use the longevity-diet link in this way. In recent decades we live even longer. Does that mean pizza extended our lives, or was it the Coke? It's as good a guess as saying it might be global waming or the stock market.

But no guessing is needed. You have to look at all aspects effecting longevity. Most important, and obvious, of all of them is mdeical care, vaxinations, antibiotecs, drugs, etc. Also wars, habitat, weather, natural predators, etc.

Wa'il