Essiac
| Alternative medicine | |
|---|---|
| Claims | Treatment of cancer and other illnesses. |
| Related fields | Alternative medicine |
| Year proposed | approx 1920 |
| Original proponents | Rene Caisse |
| Subsequent proponents | Essiac Products Inc. |
| MeSH | C111756 |
| See also | List of questionable cancer treatments |
Essiac is an herbal tea promoted as an alternative treatment for cancer and other illnesses.[1] There is no evidence it is beneficial to health, and it may be harmful.[2]
Background
As with many alternative remedies, the exact composition of Essiac is unclear, but it reportedly contains burdock (Arctium lappa), sheep sorrel (Rumex acetosella), slippery elm bark (Ulmus rubra), and Indian rhubarb (Rheum officinale) or turkey rhubarb (Rheum palmatum).[3] Some formulations may also contain watercress, blessed thistle, red clover, and kelp.[4] From the 1920s through the 1970s, Essiac was promoted as a cancer treatment by Rene Caisse, a Canadian nurse, who claimed that it had been given to her by an Ontario Ojibwa patient she treated.[2][4] However, this has never been substantiated. There is no evidence that Essiac is a Native American or First Nations remedy, and there are multiple factors that indicate the formula is not from any Native American culture. Several of the plants in the mixture (burdock, sheep sorrel, Indian rhubarb and turkey rhubarb) are not indigenous to the Americas, and were not growing in the wilds of Northern Ontario during the time Caisse began prescribing this tea.[3] The name "Essiac" is Caisse's surname spelled backwards. Today, Essiac is often sold with apparatus (such as bottles and infusers) for making the tea, and is sometimes promoted with untrue claims that scientific studies have shown it to be effective.[5]
In 1977, Caisse sold the Essiac formula and trademark rights to Respirin Corporation (a Canadian company and predecessor in title to Essiac Products Inc.), which attempted to commercialize the product. However, the company was unable to show any efficacy of Essiac against cancer. Repeated laboratory tests showed that Essiac failed to slow tumor growth and, in large doses, killed test animals. In a number of studies, Essiac actually increased the rate of cancer growth.[6] As a result, both the U.S. and Canadian governments refused to approve Essiac as a medical treatment. Essiac was instead marketed by Essiac Products Inc. and others as a dietary supplement, subject to much looser regulation and not required to show any proof of effectiveness.[4]
Effectiveness
Numerous patients diagnosed with cancer were cured of the disease after being treated personally by René Caisse using her Essiac remedy. René Caisse appears in the 2010 documentary by award-winning filmmaker Massimo Mazzucco, "Cancer - The Forbidden Cures" along with many of her patients who were cured by Essiac. [7]
Cancer Research UK also notes that there is "no scientific evidence that Essiac can help to treat cancer or control its symptoms" and cautions that "Essiac may interact with some types of cancer treatment so it is very important to tell your doctor if you are thinking of taking Essiac."[5]
See also
References
- ^ Barrett, Stephen (July 27, 2010). "Questionable Cancer Therapies: Essiac". Quackwatch. Retrieved July 5, 2011.
- ^ a b "Essiac Tea". American Cancer Society. 2011-10-14. Archived from the original on 2015-02-09. Retrieved 2015-10-18.
There have been no published clinical trials in conventional medical journals showing that either Essiac tea or Flor Essence helps in the treatment of cancer. Some of the specific herbs contained in the mixture have shown some anti-cancer effects in laboratory experiments. However, most laboratory studies of Essiac have found it didn't work against cancer cells, and one reported that Flor Essence increased the growth of breast cancer cells. Available scientific evidence does not support its use for the treatment of cancer in humans.
- ^ a b "What kind of rhubarb root did Rene Caisse use in Essiac tea? Turkey Rhubarb v. Indian Rhubarb" - HealthFreedom.info. Retrieved 29 August 2014.
- ^ a b c "Patient Information: Essiac/Flor Essence". National Cancer Institute. July 21, 2010. Retrieved July 5, 2011.
- ^ a b "Essiac". Cancer Research UK. Retrieved August 2013.
{{cite web}}: Check date values in:|accessdate=(help) - ^ "Questions and Answers About Essiac and Flor Essence". National Cancer Institute. February 19, 2013. Retrieved May 6, 2013.
- ^ "Forbidden Cures of Cancer". Documentary Cancer: The Forbidden Cures. June 20, 2010.