Black cohosh is a perennial wild flower native to northeastern America.More than two centuries ago, Native Americans discovered that black cohosh roots helped relieve menstrual pain and menopausal symptoms including red tides, anxiety, mood swings, and sleep disturbances.Today, heisen root is still used for these purposes.In fact, the herb has been widely used in Europe for more than 40 years, and in Germany it has been approved for premenstrual discomfort, dysmenorrhea and menopausal symptoms.Black cohosh also known as total cohosh, its main active ingredient is terpene glycosides.Black cohosh can produce estrogen-like effects and regulate endocrine balance, thus helping to relieve menopausal insomnia, hot flashes, back pain and emotional loss of control and other symptoms.At least eight trials have reported that black cohosh is safe and effective in improving the symptoms associated with menopause in women.Therefore, many doctors recommend black cohosh high concentration extract to menopausal women clinically.
During the 1980s and 1990s, twelve or more studies were conducted that confirmed the scientific validity of long-term black cohosh treatment for menopausal symptoms.For example, in one study involving 629 women, black cohosh improved physical and psychological menopause symptoms in more than 80 percent of participants within four weeks.In the second study, 60 menopausal women were given black cohosh extract, a combination of estrogen or diazepam, a major anti-anxiety drug, for three months.Women who took black cohosh reported significantly less depression and anxiety than those who took a combination of estrogen or diazepam.In another study, 80 menopausal women were given black cohosh extract, combined with estrogen or a placebo for 12 weeks.Black cohosh extract improved mood anxiety, menopause and vaginal symptoms.In addition, the number of red hot flushes per day fell from five to 3.5 in the estrogen group, to less than one in the black cohosh group, compared with five.Based on these examples and the results of other studies, some experts conclude that black cohosh may be a safe and effective alternative to estrogen replacement therapy (ERT) for menopausal women who cannot or do not want ERT treatment.
Many breast cancer patients take black cohosh, a common side effect of drugs used to treat breast cancer such as tamoxifen, to relieve red tide.In addition, black cohosh may contain phytoestrogens, despite some debate about it.So there are concerns that if it contains phytoestrogens, it may stimulate the growth of breast tumors.This idea has not been scientifically proven;In fact, some studies have suggested that black cohosh may inhibit breast cancer cell growth in test tubes.More research is needed on the suitability of black cohosh for use in women with a history of breast cancer or at risk of breast cancer, such as a family history of breast cancer.
Arthritis and osteoporosis
Preliminary studies have also shown that black cohosh may help reduce inflammation caused by osteoarthritis and rheumatoid arthritis.In a review of scientific studies, the researchers concluded that a mixture of black cohosh, willow bark, greenbier sarcovate, guaiac and aspen bark may help alleviate osteoporosis.