Rooibos Tea is a plant that grows in South Africa. Lab studies suggest antioxidants may interfere with the action of certain chemotherapeutic agents. effects contain compounds that may prevent tumor growth and estrogenic activity but studies on this have not been conducted in humans. Therefore, patients with hormone-sensitive cancers should use caution before taking rooibos. Because compounds isolated from rooibos leaves demonstrated estrogenic activity, patients with hormone-sensitive cancers should use caution before taking rooibos. Email us at email@example.com and check out our home website www.icrmc.org at the Institute of Cancer Restorative Medicine to tell us about any dietary supplements you’re taking, such as herbs, vitamins, minerals, and natural or home remedies. We will be available to help you out. Remember that good health is not something that we can buy.