The idea that Japanese technology comes from the United States is boring, but I just don't want to recognize each other's scientific and technological achievements. Then I found a reason that I could accept. In the Nobel Prize for Science, the Japanese are frequent visitors.
The longevity of Japanese people is closely related to their diet environment. Oriental food is healthier than western food, and seafood is healthier than local products. The environment is also very good. Although there were many environmental problems in Japan in the 1970s, there were obvious improvements after the 1990s.
As for radiation, the influence of radiation is still only exceeded in several cities in Fukushima, and the Japanese don't trust their ZF. Some of them will actively monitor the radiation around them. In addition, Japan's resources have been heavily dependent on imports. And compared with Japanese radiation, you might as well worry about China radiation. Japan has completely banned nuclear power, and all nuclear power plants in the country have been closed. On the contrary, China is fully developing nuclear power, with more nuclear power plants under construction than before the Japanese shutdown.