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.

中文翻译：

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汞干扰育空河自给喂养雪橇犬的内源性抗氧化剂水平

在采用现代以玉米和谷物为基础的西方加工饮食之前，极地人的饮食是高脂肪和高蛋白质的，肥胖、糖尿病和心血管疾病的发病率很低。一些健康益处可归因于富含 omega-3 脂肪酸和抗氧化剂的自给饮食。全球和当地的污染对野生食物构成威胁，因为它会将污染物引入食物系统。北部原住民和他们的雪橇犬会接触到各种污染物，包括汞，这些污染物会在他们食用的鱼和野味中积累。阿拉斯加村庄的雪橇犬与人类同类食物相同，主要是鲑鱼，因此它们可以用作研究饮食成分变化影响的食物系统模型。在这项研究中，测量了育空河沿岸乡村雪橇犬的抗氧化状态和汞含量。还测量了保持营养均衡的商业饮食的参考犬舍以进行比较。总抗氧化状态与外部压力源汞呈负相关。