The Japanese don’t have to deal with nearly the level of political influence in nutrition and health care overall, as we have to deal with. I would trust them, hands down, over ANYTHING that ‘official’ United States (or Western European) sources say, and this includes our big-time orgs like the American Diabetes Association and the American Heart Association.
They are all HORRIBLY CORRUPT - don’t believe a thing they say!
Eat whatever the hell you want. I bitterly resent being told what and what not to eat.