For example, if a man has prostatitis, the early symptoms are not obvious and he is not able to get timely treatment, so it is easy to transform into prostate cancer, which is very difficult to treat. The most important thing is to know what to look for in the diet of prostate cancer, in addition to timely treatment. The most important thing to remember is that there is a positive relationship between fat inhalation and prostate cancer, especially saturated fat. Many studies have shown that excessive inhalation of animal fats, meat and dairy products can increase the risk of prostate cancer, and it is worth noting that these diets tend to be high in both total fat and saturated fat. It is difficult to isolate these relevant variables and to directly link one of these food lists to the risk of prostate cancer. In the traditional North American diet, about 40 percent of calories come from fat, while the recommended diet is no more than 30 percent from fat. Vitamin D – Vitamin D may prevent prostate cancer. The prostate epithelium contains vitamin D receptors, and normal levels of vitamin D in the blood can inhibit the continued differentiation of an established cancer cell population. Therefore, vitamin D deficiency can lead to an increased risk of prostate cancer. As long as dietary vitamin D intake is at or near the recommended level, the risk of prostate cancer is normal. Numerous studies have shown that the risk of prostate cancer does not decrease when vitamin D intake exceeds the recommended level. Vitamin E – Vitamin E has not been extensively studied for prostate cancer. Some researchers say there is a relationship between lower blood levels of vitamin E and an increased risk of prostate cancer. Other studies say there is no relationship between the two. In another study, 29,000 Finnish smokers who inhaled 50 milligrams of vitamin E supplements each day had a 30 to 40 percent lower risk of developing prostate cancer or dying from it. Vitamin E can affect some prescription drugs. For most people, the upper limit of safe vitamin E inhalation is 1,000 mg per day, beyond which vitamin E can act as an oxidative fortifier and no longer as a protective antioxidant.