Strontium-90 in Alaska

Alaskan Eskimos for whom the caribou is a dietary staple have a high strontium-90 concentration. Strontium-90 concentrations have been determined in a variety of foods used by the native population. Caribou from the tundra carry 10 to 20 times the level of domestic cattle. Eskimos for whom caribou is a staple in the diet are found to have four times the strontium-90 content of the average for the world population of the North Temperate Zone.