There's a rather funny article in the New England Journal of Medicine that finds a "significant linear correlation" between per capita consumption of chocolate and the density of Nobel Prize winners in 23 countries. Switzerland has both the highest density of Nobel Prize winners, as well as the most chocolate consumption per capita. (This study goes through 2011, I fear the findings might be much skewed by this year's Nobel Prizes.)
One of the really wonderful things about a "significant linear correlation" is that you can imagine all sorts of different cause-effect scenarios, none of which are likely to be true. But they're fun to think about! The article points out several possibilities (that's how an article in the 'serious' New England Journal of Medicine ends up 'funny'), I added one of my own below:
Chocolate makes you smart. Nobel prizes are for smart people. People who eat more chocolate win more Nobel Prizes.
OR people win Nobel Prizes which causes them to eat more chocolate.
OR people celebrate Nobel Prizes by eating lots of chocolate.
OR chocolate costs a lot of money. People who live in countries that can afford to eat a lot of chocolate have more resources to win Nobel Prizes.
OR the Nobel Prize Committee has a vested interest in chocolate consumption and thus, awards their Nobel Prizes (by country) accordingly.
Well, whatever the relationship may be, I'm happy to do my part with the chocolate consumption.