There’s no miracle food when it comes to prostate cancer. However, there’s plenty of evidence that proves that a healthy, balanced diet can lead to better health overall. What’s more, although there hasn’t  been a definitive study proving it, some data suggest that choosing the right foods may slow the progression of the disease and help prevent recurrence, says Amanda Saldivar, MS, RD, LD, a dietitian at the Digestive Disease Institute at the Cleveland Clinic.

Stay Lean and Mean
While your goal during treatment should not be to lose weight, you don’t want to gain any either. Instead, try to maintain a healthy weight by following a wholesome eating plan.

• Add more colorful fruits and vegetables into your diet. Aim for of a total of five to nine servings a day. Increasing your intake will not only add healthy antioxidants (which help fight free radicals that contribute to cancer) into your diet, it will also fill you up so you won’t be tempted to eat as much junk.
• Avoid saturated fats: One study in Cancer Causes Control followed 384 men and found that men who ate more saturated fat had three times the risk of dying from prostate cancer than men who ate less saturated fat. Other studies have found similar results, suggesting a possible association between high levels of saturated fat consumption and disease progression, says Durado Brooks, MD, MPH, the director of colorectal and prostate cancers at the American Cancer Society. Opt for lean cuts of meat like turkey, chicken and fish. Switch from full-fat dairy products to low-fat or skim, and avoid commercial snack products like potato chips. Use olive oil instead of butter when cooking.
• Fill up on fiber, which helps you feel fuller longer. Choose cereals with more than five grams of fiber per serving, and bread that has more than two grams of fiber per serving. Eat fruits whole instead of as juice, and choose brown rice or whole-wheat pasta over white.
• Limit sweets as much as possible, focusing more on nutrient-dense foods instead of empty calories.

Be a Bone-Builder
While concern about bone health is typically placed on women, for men with prostate cancer, maintaining skeletal strength becomes a priority. If anti-testosterone drugs are part of your prostate cancer treatment, osteoporosis can be a problem — testosterone protects against bone loss. Make sure to get enough calcium and vitamin D, found in foods such as milk, low-fat hard cheese and fortified orange juice. The upper limit of vitamin D recommended by the RDA is 2,000 IU. You should shoot for that dose. You will probably need a supplement to get you there. Even most adults who drink milk or juices fortified with vitamin D are still deficient when blood levels are checked. In fact, low levels of vitamin D have been associated with prostate cancer development.  
Don’t Seize on Supplements
Despite initial reports suggesting that selenium and vitamin E might reduce the risk of developing prostate cancer, a large-scale clinical trial done by the National Institutes of Health did not confirm the initial findings. Some supplements can interact with medications you might be taking, so always speak to your doctor before taking high doses of any single supplement.

Dry Out
Sometimes prostate cancer treatment can lead to temporary — sometimes even permanent — incontinence. Both surgery and radiation can damage the urinary sphincters — a band of muscle tissue that normally remains shut to prevent urine from leaking out of the bladder. Sometimes the rectum can be damaged during radiation, which can result in bowel problems, such as diarrhea. To help prevent urinary leakage:

• Avoid alcohol and caffeine, which act as diuretics, causing you to urinate more often. 
• While overall you should make sure to stay hydrated with eight eight-ounce cups of water per day, limit the number you have before you go out, as well as in the evening before bedtime.