In summary, in a probability sample of the U.S. population, subjects in the highest serum selenium quintile had an increased prevalence of diabetes compared with those in the first quintile.

Conclusion - There was a significant positive correlation between dietary selenium intake and the prevalence of diabetes.

Conclusion - This is the first study to investigate the relationship between dietary iodine intake and the risk of developing type 2 diabetes. More studies are warranted to further investigate the health effects of chronic high iodine intake, and in particular to investigate the biological mechanisms that underlie the association between iodine intake and type 2 diabetes.