Selenium Supplements May Help -- or Harm

Too much or too little of the mineral can hurt your health, evidence review finds

February 29, 2012 RSS Feed Print

However, if you don't get a blood test, Rayman said, "One can be fairly confident that in North America, additional selenium isn't needed, but the same may well not be true in Europe."

Rayman said that people generally don't need to be concerned about the amount of selenium in their diets. The only food that might provide higher-than-recommended amounts when consumed frequently is Brazil nuts, she said.

More information

Learn more about selenium from the U.S. National Library of Medicine.