A good diet for men with prostate cancer contains plenty of fruits and vegetables, explains Everyday Health. Good choices include tomatoes, papaya, guava and watermelon, which are high in lycopene, a substance that helps prevent prostate cancer and possibly slows the growth of cancer cells. Research also indicates that cruciferous vegetables such as broccoli, cauliflower and Brussels sprouts slow the growth of cancer cells.
Apples, apricots and citrus fruits are good dietary choices because they contain pectin, a type of fiber that may decrease cancer risk by as much as 40 percent, according to Everyday Health. Green tea and soy also have cancer-fighting potential, but their benefits have been demonstrated only in the laboratory as of September 2015. Fatty fish, such as salmon, contain Omega-3 fatty acids, which have also been linked to a lower risk of cancer.
Dietary choices to avoid if you have prostate cancer include processed foods and red meat, especially well-done beef cooked on a charcoal grill, as Everyday Health reports. Lean meats, beans and legumes are good alternative sources of protein.
Limiting milk, dairy and other high-calcium foods is also a good idea, as the American Institute for Cancer Research explains. Research shows that an intake of more than 1,500 milligrams of calcium per day probably increases the risk of developing prostate cancer.