Dr. Michael Greger discusses why soy consumption is associated with improved survival and lower recurrence rates in breast cancer patients. Studies show soy phytonutrients appear to improve the expression of tumor-suppressing BRCA genes.
Dr. Greger makes the following observations:
- We know that breast cancer survivors who eat soy foods, for example, have a significantly lower likelihood of the cancer recurrence. Eating soy foods appears to protect against the cancer coming back.
- A 2012 review looked at three prospective human studies done to date, and found that women who ate the most soy had a 29% lower risk of dying from breast cancer, and a 36% lower risk of cancer recurrence.
- A fourth study was since published, and it showed the same thing. “[S]oy food intake is associated with longer survival and lower recurrence among breast cancer patients.
- With an average intake of soy phytonutrients above 17 milligrams a day, which is about what’s found in a single cup of soy milk, the mortality of breast cancer may be able to be reduced by as much as 38%.