I did not see the documentary either, but i came across some vital information which is extremely very reasonable.
More realistically, the Japanese seem to have their finger on the pulse when it comes to lifestyle. Their diet is lean and balanced, consisting mainly of fish, seafood, whole grains, vegetables and tofu. The processed Western foods that science is now linking to an array of health issues are largely absent from Japanese plates.
This healthy approach to eating reflects in the country’s rate of obesity, which is impressively low at just 3.5 percentage of the population . It hardly needs saying that obesity is now considered a killer, linked to everything from coronary heart disease to diabetes and cancer.