Average IQ in Japan: 105

#3 on the World Ranking List

What is the reason for the high level of intelligence in Japan?

Food, hard working and meditation.

Japanese traditionally consume a lot of brain food - sea fish.

Also traditionally Japanese eat rice and hardly any wheat.Therefore their diet is largely gluten free. 

Japanese are traditionally the followers of Buddhism, meditation, etc.

Maybe these factors allowed Japan to have one of the highest IQ average levels.

Most likely, healthy food plays a huge role. Japanese adore eating sea fish, rice and occasionally wheat — the above products are considered to be healthy, being also very useful for active brain activity. People of certain country often meditate and relax, professing Buddhism, which allows them to achieve harmony within themselves.

Average National IQs