this is why we need to take all the things Peat says (as well as other older wise people) into account when figuring health. Id say overall people in Japan are cleaner, have much better water, cleaner air, healthier fresher food, a more diverse diet nutrient wise on average, less irritants and additives in food, but the main things are a much stronger fundamentally rooted culture where people generally feel more close, peaceful, happy, less fear about their future, they take care of elders which is huge...they don't just end up in a nursing home like in the west, which is probably why they decide to keep going, stronger sense of value of detail in work and being useful in what you do, everything is generally set up more spacious and with a mind for plant placement, ponds, beautiful flowers, handmade art and furniture...rather than just boxed manufactured kind of stuff. Just the language alone is more of a descriptive style of speech...where you describe qualities instead of giving fixed labels and defintions...this leads to a more open minded, adaptable attitude. More art, they probably have more sex, people are generally not foul in manners or appearance. They walk, bike, and generally move more. They don't have any concept of god noah Abraham jew arab western paternalistic man in the sky thought tied into the fabric of their society...nor a history of it. They are way more in tune with nature in general. Maybe the fact they get more iodine, soy, fish, green tea...or whatever is said to be the reason, are probably all minor compared to the other things