摘要：Before adopting modern corn-and-grain-based western processed diets, circumpolar people
had a high fat and protein subsistence diet and exhibited a low incidence of obesity,
diabetes and cardiovascular disease. Some health benefits are attributable to a subsistence
diet that is rich in omega-3 fatty acids and antioxidants. Pollution, both global
and local, is a threat to wild foods, as it introduces contaminants into the food
system. Northern indigenous people and their sled dogs are exposed to a variety of
contaminants, including mercury, that accumulate in the fish and game that they
consume. The sled dogs in Alaskan villages are maintained on the same subsistence
foods as their human counterparts, primarily salmon, and therefore they can be
used as a food systems model for researching the impact of changes in dietary
components. In this study, the antioxidant status and mercury levels were measured for
village sled dogs along the Yukon River. A reference kennel, maintained on a
nutritionally balanced commercial diet, was also measured for comparison. Total
antioxidant status was inversely correlated with the external stressor mercury.
