Antioxidants commonly used in breast cancer despite risks
26 June 2009
Antioxidant supplements are used widely among women with breast cancer, despite concerns the supplements may interfere with treatments.
The first study to examine supplement use at different stages of breast cancer treatment found 39 per cent of patients used antioxidants as an adjunct to chemotherapy, 42 per cent during radiation and 62 per cent during tamoxifen therapy (Cancer 2009; in press).
More than 750 patients – members of the US Long Island Breast Cancer Study – were asked about their supplement use 6 years after treatment.
Researchers found antioxidant users tended to be health-conscious before diagnosis, with higher fruit and vegetable intake, and used herbal products and mind-body practices.
Associate Professor John Boyages, director of Westmead’s Breast Cancer Institute, said a ‘commonsense’ approach was needed in the absence of good research on breast cancer therapy outcomes with high antioxidant use.
Current advice for patients undertaking chemotherapy is to avoid supplements the day before treatment, the day of treatment and the day after.
Meanwhile, eating foods naturally high in antioxidants, such as nuts, berries and a variety of vegetables, is encouraged as part of breast cancer recovery.
Last Reviewed: 26 June 2009
