Areas like Scandinavia and Siberia have very low concentrations of ultraviolet radiation, and indigenous populations are all light-skinned.[1][2] Though some people of the polar regions, like the Inuit (Eskimos), retained their dark skin as they ate Vitamin D-rich seafood, such as fish and sea mammal blubber.[68] Furthermore, these people have been living in the far north for less than 7,000 years, in some cases an insufficient time for significantly lower melanin production to have been selected for by nature.[69]