For the period from the late 70's to early 90's rate of prostate cancer has nearly doubled. Prostate cancer (PCa) is currently the second leading cause of death from cancer of men. In the U.S., it is diagnosed every three minutes, every 15 minutes someone dies from it.
Such a wide spread of prostate cancer puts him among the most important social issues of our time. I suppose, in our country the situation is no better, although such statistics do not threaten. This is most likely due to the lack of early diagnosis and health education. The bulk of the patients have advanced stage prostate cancer, which does not completely rid them of the disease.
The disease rarely occurs before 40 years and is becoming more common with each subsequent decade of life. The most insidious this disease is that there are practically no early symptoms of the disease. A person lives, works, enjoying life, while prostate cancer is past its initial stage, when it is entirely possible to get rid of this disease. When there are symptoms of the disease, to treat it may be too late.
That is why so much effort is invested in screening (search among a large number of healthy people), and early diagnosis. Currently no way a cure for prostate cancer is not present. Our hopes to reduce the number of deaths from prostate cancer are based on two tactics — early diagnosis and effective treatment of the disease in its early stages.
One of the most significant factors in the development of the disease are the hormones, although their role is not yet clear to the end. Age — also a significant factor. The majority of men (80%) who have been diagnosed, have more than 65 years of age, 90% of deaths also occur in this age group. Less than 1% of cases of prostate cancer detected in men between the ages of 50 and 64.
Doctors believe that there are several key factors that contribute to the development of prostate cancer.
Now diagnosed four broad stages of prostate cancer: initial, advanced, progressive and cancer has spread (metastasized). For the Japanese, the Americans shown that the initial stage is the same for all men, regardless of the causes of cancer.
Large differences appear in the advanced, progressive and metastatic stages. Some of the factors responsible for the last three steps and turn a "hidden" in a deadly form of the disease — these are the factors of the environment. When a person changes the environment, it runs the risk of cancer, characteristic of this "new" medium. So when the Japanese exposed at home to small risk of getting sick, move to Hawaii or California, their level of symptomatic cancer increases up to the Americans.
- Genetic predisposition (heredity)
There is a genetic predisposition to prostate cancer, that is, if the disease occurred before someone in the immediate family, the men in the family increases the chances of getting sick, and increases the likelihood of getting sick at a younger age, when man did not even think about benefits of passing the annual inspection.
Study of American scientists from the Institute of the Johns Hopkins have shown that if your father or brother had cancer prostate, your risk twice higher than the average American (which it is about 13%). Depending on the number and age of bolevshih relatives when they get sick, your risk may reach 50%.
Cases of cancer caused exclusively influenced by the environment, as well as purely hereditary, few in number, and account for about 5%. 90% of cancers arise from the interaction of diet, smoking, the adverse external influences and genetic predisposition.
Power itself is apparently not cause prostate cancer. Men who eat a diet high in fiber and low in fat, are less likely to develop prostate cancer. In one study, it was shown that the death rate from prostate cancer in 32 countries is closely linked to the consumption of animal fats (not vegetable). According to the results of another low mortality rate from prostate cancer is associated, perhaps, with a daily consumption of green and yellow vegetables.
Dieting, which is low in fat and high in fiber, reduces blood levels of testosterone (male sex hormone from the group of steroid hormones) which, in particular, plays an important role in the development of prostate cancer. Such a diet reduces the risk of prostate cancer in all men.
- Particular area of residence
When comparing the geographical distribution of solar ultraviolet radiation with the number of deaths from prostate cancer was revealed that the highest death rate from cancer is marked in the north and lowest in the South. The amount of ultraviolet distributed completely opposite way. Thus, ultraviolet radiation may protect against the development of clinical Prostate Cancer, and vitamin D, known as the moderator of tumors, somehow slow down or prevent the development of prostate cancer.
Some studies show that farmers and mechanics higher risk of getting cancer of the prostate. The development of prostate cancer affects cadmium — a trace mineral that is present in tobacco smoke and alkaline batteries. With high levels of cadmium have to deal welders and metal finishing, printing workers, rubber production. Researchers believe that exposure to cadmium increases the risk of prostate cancer.
At the moment, can be traced only a weak link between smoking and the disease. It is not necessary, apparently, to forget that smoking, nicotine, and brings a lot of toxins in every cell of the body, most certainly does not reduce the risk of prostate cancer.