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Soy products, phytoestrogens and ER+?

Page last modified on: April 23, 2009
Question from Toronto Karen: I'm still confused about soy products and phytoestrogens and how safe or unsafe they are for ER+ breast cancer patients. Are there any current updates or studies on this?
Answer —Cyndi Thomson, Ph.D., R.D.: There are no recent updates that I'm aware of and the current recommendation from most cancer centers and oncologists and dieticians in the area of oncology is to avoid high intakes of soy products if the cancer that you have is estrogen receptor positive. This is particularly true for soy concentrates and supplements However, you don't need to be a fanatic. If occasionally you like to enjoy some fresh soy beans, feel free to do so.

On Wednesday, January 19, 2005, our Ask-the-Expert Online Conference was called Nutrition and Weight. Cyndi Thomson, Ph.D., R.D. and Marisa Weiss M.D. answered your questions about nutrition and weight.

The materials presented in these conferences do not necessarily reflect the views of breastcancer.org. A qualified healthcare professional should be consulted before using any therapeutic product or regimen discussed. All readers should verify all information and data before employing any therapies described here.

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Meet the Experts

Cyndi Thomson, Ph.D., R.D.Cyndi Thomson, Ph.D., R.D. is an associate professor in Nutritional Sciences at the University of Arizona - with joint appointments in medicine and public health.

Marisa Weiss, M.D. is a radiation oncologist specializing in breast cancer and the founder, president, and guiding force behind Breastcancer.org.

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