The immune system is a collection of cells, tissue and organs that help rid the body of harmful elements and guard against infection. Immunity naturally builds over time as the body is exposed to various pathogens. However, when the immune system is weak or vulnerable, illness can occur. Certain herbs are considered powerful immune boosters and are used to both protect against and fight infection. Remember that herbs should be used in conjunction with, and not in place of, medical care.
Astragalus
Astragalus is a Chinese herb that has been used for thousands of years. It is an antioxidant and has antibacterial, anti-viral and anti-inflammatory properties. It is used to treat a variety of illnesses, especially infectious conditions, allergies and chronic fatigue. It is a fast-acting immunity herb not only because of its long history in herbal medicine, but also due to supporting research. In a study published in "Bioscience Trends" from 2010, researchers note that astragalus has potent immune-enhancing properties. It has been shown to increase the production of interferon, an anti-viral protein and activate lymphocytes, killer T cells and other macrophages -- blood cells that consume necrotic cells and foreign matter. Consult a trained health care practitioner before using astragalus.
Acai
The Acai palm is native to Central and South America, especially around the Amazon region. Its berries have been used for both food and medicine by indigenous peoples in the area for centuries. It is used to enhance memory, treat infectious conditions and improve heart health. It is rich in antioxidants, amino acids, essential fatty acids, and vitamins such as A and C. It also contains flavonoids, or chemicals that bind free radicals and strengthen the immune system. According to a 2010 study published in the "Public Library of Science," isolated acai polysaccharides activated killer T cells and myeloid cells, which are cells that form red and white blood cells as well as platelets. Each of these are key elements in strengthening immune function. Consult your medical doctor before using acai for medicinal purposes.
Echinacea
Echinacea is a well-known and extensively studied herb that was originally used in Native American medicine. It is considered naturally antibiotic, and is often recommended to treat the common cold and flu, and many other infectious conditions. Echinacea contains polysaccharides and flavonoids, which strengthen the immune system, and has long been recognized for its powerful immune-boosting properties. A study from the "Journal of the National Cancer Institute" as far back as 1989 identified chemical constituents in echinacea that stimulate microphage activity. The researchers noted echinacea's therapeutic value in the defense against tumors as well as infectious diseases. Echinacea should not be used for more than two weeks at a time as the body can become adapted to it. Talk to your doctor before trying echinacea.
Elderberry
Elderberry, also known as elder, grows throughout Europe, Africa and parts of Asia. It has been used in folk medicine for hundreds of years to treat respiratory illnesses, colds and the flu, and it helps heal wounds. It is considered to have antioxidant, anti-inflammatory, antibiotic and anti-viral actions. An extract of elderberry, called Sambucol, has been studied specifically in the treatment of several strains of the flu virus, with remarkable results. According to a 2002 study found in the "Israel Medical Association Journal," extracts of black elderberry produced cytokines, or proteins produced by cells that help regulate the immune system and inflammation in the body. Researchers concluded that three Sambucol formulas strengthened the immune system by increasing cytokine production. Talk to your health care provider about proper use of elderberry.
Panax Ginseng
Panax ginseng, also known as Asian ginseng, is another ancient herb used in traditional Chinese medicine. Herbalists believe it to be effective in treating a number of illnesses, including diabetes, Alzheimer's disease, cancer, infertility, stress, chronic fatigue and poor immunity. While studies that may or may not validate these claims are ongoing, one notable study did show wild panax ginseng to be effective at stimulating an immune response. The 2010 study found in the "American Journal of Chinese Medicine" reported that extracts stimulated the production of cytokines and enhanced microphage activity. Researchers pointed out that the study provided evidence that panax ginseng triggers several immune responses. Check with your doctor before using ginseng, as it may interact with other prescription medications.
References
- "Bioscience Trends"; Chinese Herbal Medicines as Adjuvant Treatment During Chemo- or Radio-Therapy for Cancer; Q. Fanghua, et al.; December 2010
- "Public Library of Science"; Polysaccharides Isolated From Açaí Fruit Induce Innate Immune Responses; J. Holderness, et al.; February 2011
- "Journal of the National Cancer Institute"; Macrophage Activation by the Polysaccharide Arabinogalactan Isolated From Plant Cell Cultures of Echinacea Purpurea; B. Luetigg, et al.; May 1989
- "The Israel Medical Association Journal"; The Effect of Herbal Remedies on the Production of Human Inflammatory and Anti-Inflammatory Cytokines; V. Barak, et al.; November 2002
- "The American Journal of Chinese Medicine"; Wild Panax Ginseng (Panax Ginseng C.A. Meyer) Protects Against Methotrexate-Induced Cell Regression by Enhancing the Immune Response in RAW 264.7 Macrophages; H. Yang et al.; 2010
