Selenium deficiency epidemiology and demographics

Overview

Selenium deficiency is relatively rare in healthy well-nourished individuals. Few cases in humans have been reported.

Epidemiology and prevention

These diseases are most common in certain parts of China where the intake is low because the soil is extremely deficient in selenium. Studies in Jiangsu Province of China have indicated a reduction in the prevalence of these diseases by taking selenium supplements. In Finland, selenium salts are added to chemical fertilizers, as a way to increase selenium in soils.