Japan has the highest suicide rates of any industrialised, top ten, civilised country.

http://en.wikipedia.org/wiki/List_of_countries_by_suicide_rate
http://en.wikipedia.org/wiki/List_of_OECD_countries_by_suicide_rate

Also, there is something in Japan called Hikikomori, where young people stay in their rooms all day due to the stress of modrn living.

Japanese also eat the most fish, which may cause mercury poisoning.

http://en.wikipedia.org/wiki/Hikikomori

That sounds a lot like mercury poisoning.

What do you think ?