Reseach Roundup: September 2009

High selenium levels in the body linked with diabetes. In a study of 917 U.S. adults at least 40 years of age, high blood selenium levels were linked with a higher rate of diabetes and higher blood glucose. Since Americans consume high levels of selenium through supplements and naturally-occurring sources (U.S. soil is rich in selenium), the researchers suggested that people not use selenium supplements until there is a better understanding of risks and benefits.