'''Black Cohosh''' ''Actaea racemosa '' <ref name="Actaea racemosa "/> has been used by Native Americans for more than two ''hundred years'', after they discovered the root of the plant helped relieve '''menstrual cramps''' and '''symptoms of menopause'''. These days it is still used for menopausal symptoms such as hot ''flashes/flushes'', ''irritability, mood swings'' and ''sleep disturbances''.
*According to Cancer Research UK: "Doctors are worried that using black cohosh long term may cause thickening of the womb lining. This could lead to an increased risk of womb cancer." They also caution that people with liver problems should not take it as it can damage the liver, although a 2011 meta-analysis of research evidence suggested this concern may be unfounded.