One of the causes of prostate cancer is inheritance
If a direct relative (brother or father) suffers from prostate cancer, it will double the risk of prostate cancer.Two or more direct relatives suffer from prostate cancer, and the relatively danger will increase to 5-11 times.Some sub -groups (about 9%) of the patients with prostate cancer are "real genetic prostate cancer", which refers to 3 or more relatives or at least 2 as early diseases (before 55 years old).
Epidemiological studies have found that patients with the history of prostate cancer -positive family history are about 6-7 years earlier than those who have no family history, and there are no differences in other respects.The probability of prostate cancer found that prostate cancer is roughly similar in different regions of the world.This is in sharp contrast to the incidence of prostate cancer in different regions of prostate cancer, the highest in the United States and Nordic, and the lowest in Southeast Asia.However, epidemiological studies have found that the incidence of incidence rose after Japanese immigrants rose to Hawaii. If immigrants reached California, the incidence increased significantly and approached the incidence of the United States.
The above studies have shown that exogenous factors will affect the process from the so -called latent prostate cancer to clinical prostate cancer.These factors such as food intake, sexual behavior, alcohol consumption, ultraviolet radiation exposure, and occupational exposure as possible cause confirmation are still discussing, but high -animal fat diet is an important risk factor.Tomato contains lycopene, a strong anti -oxidant, and is currently being widely studied as a possible protective agent that suppress prostate cancer.
A contribution analysis includes 11 groups of case control and 10 groups of queue studies, which is proposed to identify the risk of tomato intake and the risk of prostate cancer. The results show that a large amount of eating tomato reduces the relative risk of prostate cancer to 0.81 (CI 0.71-0.92).Other risk factors include low intake of vitamin E, selenium, lignin, and isoflavones.
Prostate cancer mainly has the following preventive measures:
1. Census
The current effective method is to use rectal fingers to check the serum PSA concentration.
Use serum PSA levels to detect male citizens over 40 to 45 years old, and follow up every year to be determined. This census method is economically effective.Biopsy, this method can effectively detect early limitations of prostate cancer. The census of a population of Sweden found that the concentration of serum PSA increased from 3ng/ml to clinical diagnosis of prostate cancer for 7 years, so therefore, it was 7 years, soThe PSA census for the crowd can diagnose prostate cancer early and treat it early, because the PSA blood concentration increases with age, research at Gunma University of Japan found that 60-64 years old, 65-69 years old, 70-74 years old, 75 ~ 75 ~The normal values of blood PSA for men aged 79 and over 80 should be 3.0, 3.5, 4.0, and 7.0ng/ml, respectively. The sensitivity, specificity and effectiveness of these normal values are 92.4%, 91.2 91.2, respectively.%And 84.3%, Austrian research 45-49 years old and 50-59 -year -old men's serum PSA concentration is normal high limit, respectively, 2.5ng/ml and 3.5ng/ml, respectively.The percentage of free PSA is to increase the sensitivity of PSA measurement. Generally speaking, the PSA increases in the benign hyperplasia of the prostate, and the free PSA decreases among patients with prostate cancer. Therefore, it is likely that patients with 25%of PSA "(probability of less than 10%)Without prostate cancer, if "10%, patients are likely (60%to 80%probability) to suffer from prostate cancer, it is very meaningful to do prostate biopsy at this time.
2. Avoid risk factors
It is difficult to achieve this, because there are many clear risk factors, inheritance, age, etc. are unavoidable, but potential environmental risk factors such as high -fat diet, cadmium, herbicides and other failed factors may be avoided.It is known that about 60%of the factors to prostate cancer come from the living environment. From Swedish studies have shown that occupational factors are related to prostate cancer. There are statistically significant dangerous occupations.Industry, so farmers, tingling workers and management staff in these industries have significantly increased incidence. In addition, people with contact with chemicals, herbicides, and fertilizers have increased the risk of prostate cancer. According to New Zealand reports, food contains anti -resistance in food.The fish oil of oxide can protect and reduce the risk of prostate cancer. Taiwan reports that the magnesium content in drinking water can prevent prostate cancer. In addition, it adheres to a low -fat diet.Measures such as the content of selenium selenium and vitamin E can also prevent the occurrence of prostate cancer.
3. Chemical prevention
According to the drug interference method, chemical prevention can be divided into the following main categories, such as tumor inhibitors, drugs with anti -tumor growth, and tumor progress inhibitors. Due to the occurrence of prostate cancer, development is a long -term process, so we can we canMedication for chemical prevention or drug suppression of the occurrence and development of prostate cancer. For example, non -Nasamide can inhibit the transition of testosterone into active objects that have great effects on prostate & mdash; & mdash; therefore, it may inhibit testosterone to prostate cancer cells.The role of promoting growth, this role is still in clinical research and observation. It needs to be confirmed that other drugs, such as visual eloquent formaldehyde, have the role of promoting cellularization and anti -tumor progress. It is also in clinical research.Medication.
Reminder: The genetic factors of the prostate have no exact prevention methods so far. If there are relatives with prostate cancer in the family, they should be screened in advance of prostate cancer and regularly go to the hospital for medical examination. Once treated in time, it should be treated in time.
(Editor in charge: Wang Shaohua)
