Professor taiju matsuzawa wanted to find out why otherwise healthy farmers in northern japan appeared to be losing their ability to think and reason at a relatively early age ， and how the process of ageing could he slowed down 注意你如果不这么做（系安全带）的话，你有可能被告上法庭，而且你有可能被处以罚款除非你能证明你有不带安全带的理由。
