Selenium is an essential mineral that is synergistic with vitamin E. This means they increase the potency of the other. Selenium is an antioxidant that slows aging and hardening of tissues through oxidation. Males appear to have a greater need for selenium and half their body's supply concentrates in the testicles and portions of the seminal ducts adjacent to the prostate gland. Selenium is lost in the semen. Selenium alleviates hot flashes and menopausal distress. It reduces the risk of heart disease, stroke and various cancers. Best sources of selenium are seafood, kidney, liver, wheat germ, bran, tuna fish, onions, tomatoes, broccoli, garlic and brown rice.