You talk about heart disease increasing despite the introduction of low fat diets . Studies show that people are eating high fat diets.I never said all fat was bad regardless of the amount consumed . Who is Weston Price? If I want nutrition information, I"ll consult my notes from Berkeley .
As far as people over 100, most of them are under average weight and the rest are average weight so they are obviously not consuming excess calories regardless of the source.
Studies show that rats who are deprived of food one day a week live 30% longer.
I agree that diets that are 10% fat cause you to be hungry all the time and therefore take in too many calories .This does not mean the more (fat) the merrier.
Iron is necessary especially in women of child bearing age. Yet a slight increase over the neccessary amount of iron produces a significant increase in cancer incidence.Also women who eat a low fat diet have lesser need for iron since they have a lower incidence of fibroid tumors (which cause reproductive probs)
I don't see too many fat Japanese. Maybe this accounts for their increased longevity.Even though they eat meat and fish ,I read that their diets have a low percentage of fat.