How do you explain the apparent good health of the Japanese? They seem to have a low metabolism (less keen on physical exercise), however they keep in good physical shape (very rarely overweight) and seem to age particularly well cognitively. Their diet has a lot of fish and maybe vegetable oils too, but I never saw them eating thyroid compensating foods such as fish heads.
I know they are not disease free. Peat mentions higher incidence of stomach cancer for example.
The only reasons I can think of are genetic differences (males used to smoke a lot, yet they lived long) or the fact that they protect themselves from the sun (avoiding some fat oxidation). They also have natto (rich in K2), but they don't all seem to it, just occasionally.
I know they are not disease free. Peat mentions higher incidence of stomach cancer for example.
The only reasons I can think of are genetic differences (males used to smoke a lot, yet they lived long) or the fact that they protect themselves from the sun (avoiding some fat oxidation). They also have natto (rich in K2), but they don't all seem to it, just occasionally.