Through two studies, the researchers will determine whether increased levels of dietary protein put men at a higher risk of developing prostate cancer. The first study looks at men with prostate cancer to see if lowering daily intake of protein slows the growth of cancer prior to prostate gland removal surgery. The second study looks at men who have already had prostate cancer surgery but still have elevated prostate-specific antigen levels.
Incidence of prostate cancer is higher in developed countries, said Luigi Fontana, MD, PhD, principal investigator for both studies, and diet and lifestyle might be to blame. The typical American diet includes twice the amount of recommended protein, he said.
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