Fred Hutchinson Cancer Research Center, U.S. researchers in the latest issue of “Cancer Epidemiology, Biomarkers and Prevention”  report said, 35,000 more than 50-year-old to 76-year-old postmenopausal women tracking survey to 15 kinds of health products of the impact of breast cancer. The results found that only one kind of fish oil supplements that have a preventive effect of breast cancer.

In the investigation began, these women were not suffering from breast cancer. In the 6 years of follow-up survey, a total of 880 women were diagnosed with breast cancer. Comparative analysis found that taking fish oil supplements in postmenopausal women with risk of breast cancer lower than other people by about 32%.

Researcher said that is not clear why fish oil may help prevent breast cancer, which may contain anti-inflammatory substances in the fish oil. Next, more research needed to ultimately determine the role of fish oil and anti-cancer mechanism.

Those women who did not take off bra at night, likely will have to more than 100 times higher.

Beause bra clamping the chest can affect breast normal lymph flow over will make normal mammary gland cells cancerous.

The researchers found that regularly taking vitamin supplements in middle-aged women face higher breast cancer risk than other women, nearly 20%.

Studies have shown that taking supplements containing vitamins and minerals may increase breast tissue density more than 5%. In addition, folic acid was found in multivitamins may also be a risk factors. Studies have pointed out that high folic acid may promote tumor growth.

Their published research paper in “American Journal of Clinical Nutrition” said: These findings shows multivitamins is related with rising breast cancer risk. This finding is very value to concern, the need for further research.

Researchers stress that for the individual , women face less risk of breast cancer, most women taking vitamin supplements does not suffer from breast cancer.

U.S. National Cancer Institute researchers report that, after study, BRCA1 gene in breast cells repair DNA (deoxyribonucleic acid) plays an important role in the injury, when the gene mutates, the risk of female breast cancer increased 85%.

The researchers BRCA1 gene mutation of mice to a study on the experimental mice of genes known to suppress 53BP1.

The results found that these mice significantly reduced risk of cancer.

The study report has been published in four monthly U.S. 《Cell》magazine.

Another group of researchers told the American Association for Cancer Research, eating fish several times a week, men less likely to suffer from colon cancer.

 These two studies further demonstrated the role of diet in cancer. Cancer experts now believe, in all types of cancer, as many as two-thirds by smoking, diet and lack of exercise and other unhealthy lifestyle factors.

U.S. National Cancer Institute and the University of Hawaii researchers have found that in 5 years to 11 years of age often eat tofu, miso and other soy foods women with breast cancer 58% lower chance. How soy can prevent cancer is unclear, but soy compounds called isoflavones have estrogen effects.

The study found once released, the safety of this therapy is becoming increasingly confused.

After analysed the millions of the age of 50-year-old and 60-year-old British record of women’s health, U.S. researchers did not find this controversial treatment and there is a link between breast cancer risk.

The study published in the March issue of 《Cancer》magazine.

Saint Louis University professor of pathology, chief researcher explains that: the study found that in some sort of bitter melon extract slowed the growth of breast cancer cells and even kill them. This may be due to bitter melon contains a large number of Vitamin C and flavonoids caused.

They  divided into four groups by the amount of soy food per day, to compare the incidence of lung cancer and consumption linkages.

    The results showed that the most of amount of consumption of soy products a group of men, the risk of lung cancer than men with at least one group of lower 57%.

Researchers say lung cancer preventive effect of soy seems rich in isoflavones related to soybean. Past studies have shown that isoflavones can prevent breast cancer and prostate cancer.

The researchers said that eating soy products that have been men who quit smoking to prevent lung cancer, there is not much effect, may be due to smoking damage caused by genetic level difficult to eliminate.

30 years of age, breast problems are mostly benign (not cancerous).

 However, young women generally have fibrocystic breast changes, in order to breast pain, cysts and non-cancerous tumor is characterized.

Breast pain may be cyclical, it can occur with menstruation, it can be a persistent pain.

But most experts of the United States feel that the most effective method is movement, even though they also have  this discovery as the 2009 one of  ”Ten medical breakthrough”.

    Exercise can prevent cancer is mainly because one aspect is which can reduce the transmission time of food within intestine, so that carcinogenic substances in food would be absorbed less time can be effective in preventing colon cancer and other gastrointestinal tumors. Another aspect is regulating the body hormone level, which can prevent breast cancer and hormone levels related to cancer; third aspect is regulating the immune system, healthy immune system is the most important part of cancer prevention. Now the United States many people will movement on 30 minutes a day.

    As for the best exercise prescription for the U.S. Sports Institute experts say, jogging, cycling, swimming and other aerobic exercise most appropriate. Exercise 3-5 times a week, each about 30 minutes and exercise intensity should be controlled in exercise heart rate does not exceed 70% of maximum heart rate, not less than 50% of maximum heart rate.