Many dietary factors can increase the risk of developing prostate cancer. Several studies have shown that a high-fat diet can stimulate prostate cancer growth. Beef and high-fat dairy products appear to be prostate cancer stimulants, and high dairy intake can increase the risk of prostate cancer; conversely, fruits and vegetables and a low-fat diet may help reduce the risk of prostate cancer. These healthy foods include soy (tofu and soy milk), tomatoes, pomegranates, green tea, red grapes, strawberries, blueberries, peas, watermelon, rosemary, garlic, and citrus. Soy contains phytoestrogens, similar to estrogen in women. Phytoestrogens at dietary dose conditions (the dose contained in normal foods, not supplemental doses) can reduce the risk of prostate cancer. Green tea contains a variety of antioxidants, with the main components at play being tea polyphenols and catechins compounds. The antioxidant components of green tea have a significant inhibitory effect on the malignant transformation of cells induced by a variety of carcinogens, including aflatoxins, benzo(a)pyrene, cigarette carcinogens, and amino acid cleavage products, helping to stabilize cell structure and reduce cell damage, which can cause cellular carcinogenesis. Many fish such as salmon, tuna, sardines and herring are rich in Omega 3 fatty acids, which have both cardiovascular disease and cancer prevention effects. Minerals play a very important role in the growth and normal functioning of the human body. There are more than 60 minerals in the human body, 22 of which are essential minerals that the body cannot synthesize on its own, which means they must be obtained from food or supplements. Selenium is an important antioxidant, and scientists have found that it has anti-cancer effects and can reduce the incidence of prostate cancer by up to 70%, so it can be consumed in appropriate amounts. Dietary selenium is mainly found in foods such as animal liver, seafood, whole grains, milk and dairy products, mushrooms, garlic and asparagus, and the amount of cancer prevention is 100 to 200 micrograms per day intake. White melon seeds contain essential zinc, which helps the body repair wounds, promotes cell regeneration and fights free radicals. The intake of zinc for adults is 15 mg per day. The body’s immunity decreases when zinc is deficient, although there is no positive evidence that zinc can reduce the incidence of prostate cancer. Recent studies have found that the popular crimson pomegranate juice also has an anti-prostate cancer effect. Researchers in the United States injected human prostate cancer cells into rats to give them prostate cancer and then gave them pomegranate juice to drink. After a period of “food therapy”, they found that the tumors shrank. Pomegranate juice is rich in antioxidants, the chemicals that give fruits and vegetables their darker color, and it can counteract damage to cells that can then develop into cancer or other diseases. A recent study showed that drinking a glass of pomegranate juice a day significantly slowed the growth of malignant tumors in prostate cancer patients. Prostate cancer patients who were asked to drink one glass of pomegranate juice (225 ml) a day had significantly slower progression – their PSA levels only increased by a factor of one after 54 months. The use of pomegranate juice for adjuvant therapy was not only effective, but also did not produce other adverse effects.