Figure 2.

Comparing environmental and genetic factors. At least three population groups can be distinguished in our study: Sami reindeer herders, Sami with other occupations, and non-Sami living in the same geographic region. The effect of environmental factors can be addressed by comparison between groups with the same genetic background (eg, meat intake between reindeer herding Sami and Sami with other occupations) or occupation (eg, reindeer herding vs other occupations). The effect of genetic factors can be addressed by comparison of non-reindeer herding Sami with those with other genetic backgrounds.