Eating soya may harm women with breast cancer

WASHINGTON - Eating soya could pose risks to some women who begin consuming it as adults as it can make breast- cancer tumours resistant to treatment, United States researchers said on Monday.

A study on lab rats showed that those who were fed a soya compound all their lives responded well to a popular breast-cancer drug, tamoxifen, but those who began eating it as adults, and after they developed breast cancer, grew resistant.

The research possibly explains why tamoxifen stops working and allows tumours to grow again in some women, said scientists from Georgetown University who presented their findings at a medical conference in Chicago.

"These results suggest that Western women who started soya intake as adults should stop if diagnosed with breast cancer," said senior author Leena Hilakivi-Clarke, professor of Oncology at Georgetown.

The study was presented at the American Association for Cancer Research Annual Meeting.


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