For those of you who suffered from prostate cancer, the following foods should you avoid:
Fat
Research on animals proved that fat free diet can reduce the growth of malignant tumor of the prostate. Instead, a diet high in fat led to the growth of prostate cancer cells more quickly.
The role of fats in increasing the risk of prostate cancer occurs with some mechanism.
First, proved that the fat may affect testosterone levels, a hormone that is needed for the growth of prostate cells either benign or malignant. Men who consume less fat will have testosterone hormone levels are relatively low.
Second, the fat is a source of free radicals
The third is the result of the fatty acid metabolism is a carcinogenic substance is suspected. An example is not saturated fatty acid omega-6 which can spur the growth of prostate cancer cells.
Although many studies epidemiologic and studies that prove the existence of biology relationship between diets high in fat and risk of prostate cancer, still required additional research epidemiologic to prove it for sure.
Soy
The real difference between diet society of Asia and the Western countries is on the consumption of soy products. Study of the epidemiologik report, that the people of Asia are consuming large amounts of soy products, while the incidence of cancer prostate is low.
Soy contains some materials that have weak oestrogenic activity. Phytooestrogen, or isoflavones, allegedly has the ability to anticarsinogenic.
Phytoestrogen is the most widely encountered isoflavones in soy products, has the ability to inhibit the receptor tyrosine kinase such as EGFR and her-2/neu both of which have an impact on the process of the occurrence of prostate cancer.
Another mechanism is the ability of the Phytoestrogen to reduce expression of estrogen receptor and androgen receptor in prostate tissue. Reduction of androgen receptor and estrogen receptors can cause the low incidence of prostate cancer on a population that many consume a diet containing a lot of phytooestrogen.
Men who consume soy milk has the incidence of prostate cancer is 70 percent lower than those who do not consume. However, the study has only low statistical power where there may still be other dietary factors that cause it.
Thus, additional research is still needed in order to ensure the role of soy for prostate cancer prevention.
Lycopene
Lycopene is a carotenoid obtained in high concentration in tomatoes and is a powerful antioxidant. Some case studies-control and prospective studies concluded that consumption of tomatoes or tomato products can be associated with low risk of prostate cancer.
However the process of cooking the fruit tomatoes doesn't seem to reduce this advantage, the contrary would increase bioavailabilitas of useful components.
The working mechanism of lycopene to reduce the risk of prostate cancer is not known be clearly until this moment. Chances are the ability of the protection of lycopene against the aging process of prostate epithelial cells induced by reactive oxygen species.
Various research reports that consumption of tomato juice (without cooking process) does not have the effect of prevention, so it was concluded that the process of cooking it will increase the bioavailibility of lycopene.
In addition to three diet, there are still some other diet ingredients: vitamin E, selenium, and green tea may also have the ability to reduce the risk of prostate cancer. The third ingredient is known as antioxidants, but so far there is no assurance mechanism works and also not yet supported by the research epidemiologic or other clinic.
