Scientists have pinpointed one reason why people living in isolated villages in Greece may enjoy long and healthy lives.
They found a new genetic variant, common among villagers, which appears to protect the heart by lowering levels of "bad" fats and cholesterol.
Despite a diet rich in animal fat, the people of Mylopotamos in northern Crete do not suffer from cardiovascular disease.
And they really love their cheese.
What's special about these Greek villages?