Does black cohosh increase the risk of breast cancer?

There is no conclusive clinical evidence to suggest that the amount of black cohosh extract in PhytoEstrin increases cancer risk in otherwise healthy women. For those undergoing chemotherapy or those with a history of breast cancer, many herbals and nutritional supplements may be inappropriate. We suggest you discuss these concerns with your physician or health care provider.
Although items in the popular press about black cohosh have implied a link to breast cancer growth, extensive reviews of existing literature and research has failed to corroborate such claims.
Based on a long history of safe use and many review articles involving thousands of study subjects, appropriate use of black cohosh is safe and without major side-effects for the vast majority of generally healthy adults.

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