By Janene Pieters on March 29, 2019 - 11:50
Erasmus MC warns women who are undergoing breast cancer treatment to be careful with the use of turmeric tablets, which are considered an alternative medicine or supplement. Research by the Rotterdam hospital showed that turmeric can decrease the active substance of tamoxifen, the medicine used to treat breast cancer with hormone therapy, the hospital said on its website.
The Erasmus MC research showed that the use of turmeric tablets decreases the active substance of tamoxifen by an average of 13 percent, though in some women the active substance decreased by as much as 30 percent.
Each year around 14,500 women in the Netherlands are diagnosed with breast cancer. The vast majority of these women are treated with hormone therapy, which means they have to take tamoxifen for between three and ten years. "That medicine puts a shield around tumor cells, so to speak, so that they become insensitive to the hormone that feeds them and makes them spread and grow", the researchers explain.
Previous research showed that breast cancer patients need a minimum level of 16 nmol/l enoxifen - the active substance that remains after the liver broke down tamoxifen - in their blood for this medicine to be effective. But the use of turmeric tablets made the level of this active substance drop to or below this limit, according ot the researchers. "Which may make the difference between an effective and ineffective anti-cancer treatment."
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