A phase 1 trial of one vaccine appeared to promote immune responses in 70 percent of the patients involved, according to a recent study.
However, Mason said those drugs are still many years and many, many dollars away.
In the meanwhile, there are steps men can take to limit their chances of getting prostate cancer.
For example, some studies have shown that chemicals released from muscle proteins when they're cooked at high temperatures could increase risk of prostate cancer in some, Mason said.
Other studies have shown that a diet rich in animal fat or meat could be linked to incidence of prostate cancer, according to the National Cancer Institute.
"Before I would put my money in a vaccine, I would want to think about some of the dietary things people can do," Mason added.
To learn more visit the U.S. National Cancer Institute.
SOURCES: Durado Brooks, M.D., director, prostate cancer and colorectal cancer, American Cancer Society, Atlanta; Terry Mason, M.D., commissioner, Chicago Department of Public Health, and volunteer member, American Cancer Society Prostate Cancer Advisory Group; U.S. National Cancer Institute; American Cancer Society
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