Black Cohosh
(Also
known as ACTAEA RACEMOSA AND CIMICIFUGA RACEMOSA)
Background
Black Cohosh (known as both Actaea racemosa
and Cimicifuga racemosa), a member of the buttercup family, is a
perennial plant that is native to North America. Other common names
include black snakeroot, bugbane, bugwort, rattleroot, rattletop,
rattleweed, and macrotys.
Historical Uses of Black Cohosh
Black Cohosh was used in North American
Indian medicine for malaise, gynecological disorders, kidney
disorders, malaria, rheumatism, and sore throat. It was also used
for colds, cough, constipation, hives, and backache and to induce
lactation. In 19th-century America, Black Cohosh was a home remedy
used for rheumatism and fever, as a diuretic, and to bring on
menstruation. It was extremely popular among a group of alternative
practitioners who called Black Cohosh "macrotys" and prescribed it
for rheumatism, lung conditions, neurological conditions, and
conditions that affected women's reproductive organs (including
menstrual problems, inflammation of the uterus or ovaries,
infertility, threatened miscarriage, and relief of labor pains).
Health Benefits of Black Cohosh
Black Cohosh is used primarily for hot flashes and other menopausal
symptoms. A number of studies have been conducted to determine Black
Cohosh’s effects on menopausal symptoms. A compound recently
identified in Black Cohosh (fukinolic acid) was shown to have
estrogenic activity in vitro.
Because of the marked changes in hormone levels in women who have
achieved menopause, numerous modifications occur in the structure
and activity of vaginal and uterine tissues. Microscopically,
vaginal cells look different after menopause because of decreased
estrogen. Menopause is associated with a thinning of the uterine
lining (the endometrium).
Black Cohosh can cause stomach discomfort and headaches [10].
Clinical trials comparing estrogens with Black Cohosh preparations
have shown a low incidence of adverse effects associated with Black
Cohosh; headaches, gastric complaints, heaviness in the legs, and
weight problems were the main adverse effects noted.
The use of Black Cohosh during pregnancy has not been rigorously
studied. Thus, it would be prudent for pregnant women not to take
Black Cohosh unless they do so under the supervision of their health
care provider. Women with breast cancer may want to avoid Black
Cohosh until its effects on breast tissue are understood.