Is it true that soy is not good for breast cancer patients?
Protein in soy is known to increase the activity of genes associated with the growth of breast cancer in women who already have breast cancer, according to a new study. However, the researchers explain that it should not make the fear of breast cancer patients to eat soy.
Results of a study published in the Journal of the NationalCancer Institute reveal that women who have breast cancer are still allowed to consume soy or soy products such as tofu. But should not be too much. So, what about women who do not have breast cancer? Whether soy can lead to the emergence of breast cancer?
“This study does not indicate whether soy could increase the risk of breast in women of normal,” said researcher Dr. Jacqueline Bromberg of Memorial Sloan Kettering Cancer Center in New York City, as reported by the Daily Health Post (04/09).
Until now the link between the protein in soy and breast cancer is complex. On the one hand, Japanese women who came mostly from soybean meal would have a lower risk of breast cancer. Meanwhile, scientifically known that soy contains phytoestrogens, which are substances that can trigger the growth of breast tumors.
In this latest discovery Bromberg and colleagues conducted observations of 140 women with newly diagnosed breast cancer into two groups. One group ate soy protein every day for one to four weeks, while another group was given powdered milk.
Despite the short time of this study found that 20 percent of breast cancer patients who consumed soy protein gene activity showed a high trigger cancer. It was not clear what the result of the increase in the activity of this gene triggers breast cancer because the researchers did not find any evidence that the tumor develops into uncontrollable.
Even so, to be safe researchers have suggested that women who get breast cancer do not consume a lot of soy or soy protein supplements. Researchers also assume that the effects of soy protein consumption related to time. Chances are if consumed when young, soy protein will not lead to the emergence of breast cancer. However, to the researchers still need further research in a larger scale.