Selenium is an antioxidant which seems to inhibit cell proliferation. The recommended daily allowance (RDA) of selenium is 55 ug (micrograms).
Review Date 3/11/2021
Updated by: Meagan Bridges, RD, University of Virginia Health System, Charlottesville, VA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.