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German diet consists of almost the same food stuff to be found on any country. So how in hell could they actually be smarter than other people?! But the medical scientists and researchers who have found that Germans are the smartest people on the planet have noticed a larger brain size for Europeans living in the northern areas of the continent. A university professor known as Lynn has stated that colder regions of the planet produce people with larger brains. This is because of the need to eat animal meat since plant life is rather scarce in these areas. With meat stuff, you get more protein, and protein is generally for the brain. With this, I think a trip to Germany would be more of an educational venture than a leisurely one.