> I have seen something like this before. In Sweden researchers connected
> GRANDPARENTS' diets to later generations' diabetes! Grandparents who
> lived through tough times had non-diabetic descendants, those who had
> rich diets had more diabetic descendants. Weird. But that would explain
> it.

That's a typical association, not necessarily a causal relationship.

For example, those with rich diets gave birth to financially comfortable
children, who ate a rich diet, who gave birth to financially comfortable
children, who ate a rich diet.  All generations may have worked at
relatively sedentary occupations too.  So what caused the higher rates of
diabetes: rich diets?, genetics?, transfer of insulin resistance in the
womb?, sedentary occupations...????

Rob