Fruits and vegetables don't contain much. But foods are shipped all over the country, and indeed all over the world, so it's hard to know whether your food comes from a selenium-rich environment or not. Prostate cancer rates have increased in England and Wales during this period, but no one is sure that reduced selenium consumption caused this. Dr. Edward Giovannucci of the Harvard Medical School believes that the evidence for selenium's benefits in reducing prostate cancer risk is strong enough that public health officials should encourage people to increase selenium intake now. As he points out, it is nearly impossible for any one of us to know how much selenium we consume, so it may be time for the government to consider fortifying certain foods.
Fish is an excellent source of selenium, so eat two or three servings weekly.
Meats and poultry are good sources, but limit yourself to small portions and lean cuts. Make whole grains part of your daily fare. Whole grains contain selenium, as well as fiber, vitamins, and other minerals. Brazil nuts are a great source. Other nuts have small amounts.