Margaret Karagas, PhD
Margaret Karagas, PhD, is a professor of community and family medicine at Dartmouth Medical School in Hanover, New Hampshire, and leader of a study of 1,875 people.
Bottom line: Further research is needed before selenium supplements could be recommended for bladder cancer prevention, but results of several studies are promising. Meanwhile, selenium-rich foods — including nuts, seafood and whole wheat — can be a healthful part of your diet.