Genetic traits help Inuit in the Arctic

The Inuit, a group of people who make the Arctic their home, have benefited from a handy set of genetic adaptations that help them survive in some of Earth's harshest conditions.

Scientists on Thursday said a study of the genomes of Inuit from Greenland revealed unique genetic variants related to fat metabolism that ward off cardiovascular disease that otherwise could be caused by a diet traditionally high in fat from blubbery seals and whales.

These genetic mutations, which the researchers said arose perhaps 20,000 years ago, help lower "bad" LDL cholesterol and fasting insulin levels, limit the height of the Inuit, keep down their weight and help them adapt to a cold environment.