Soy does not pose harm for breast cancer survivors
Apr 6, 2011
Scientists at the Vanderbilt-Ingram Cancer Center (VICC) in Nashville, Tennessee, have determined that soy does not cause death or increased recurrence rates for breast cancer survivors, according to a new report from Fox News.
The study looked at 9,515 patients and followed the effects of tofu, soy milk, miso soup, protein shakes with soy as well as cooked soybeans and soybean sprouts.
Contrary to having an increased risk, women who ate the most amount of soy actually had a lower chance of their breast cancer coming back. These women ate about 11.83 milligrams of isoflavones each day. Their breast cancer recurrence rate was 27 percent less than those who ate the least amount of soy.
"There has been widespread concern about the safety of soy foods for women with breast cancer. Soy foods contain large amounts of isoflavones that are known to bind to estrogen receptors in cells and have estrogen-like and anti-estrogenic effects," said Xiao-Ou Shu, the lead author of the study.
The subjects for the study came from the U.S. as well as China and the results were presented at the American Association for Cancer Research (AACR).
About one in eight American women will be diagnosed with breast cancer at some point in her life. Recent studies have also linked greater social interactions with decreased cancer recurrence rates.