Complementary and Alternative Medicine (CAM)

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Complementary and Alternative Medicine

 

The term alternative medicine, as used in the modern western world, encompasses any healing practice "that does not fall within the realm of conventional medicine,"[1] Commonly cited examples[2] include naturopathy, chiropractic, herbalism, traditional Chinese medicine, Ayurveda, meditation, yoga, biofeedback, hypnosis, bodywork, homeopathy and diet-based therapies, in addition to a range of other practices. It is frequently grouped with complementary medicine, which generally refers to the same interventions when used in conjunction with mainstream techniques,[3][4][5] under the umbrella term complementary and alternative medicine, or CAM. Some significant researchers in alternative medicine oppose this grouping, preferring to emphasize differences of approach, but nevertheless use the term CAM, which has become standard.[6][7]

Alternative medicine practices are as diverse in their foundations as in their methodologies. Practices may incorporate or base themselves on traditional medicine, folk knowledge, spiritual beliefs, or newly conceived approaches to healing. Jurisdictions where alternative medical practices are sufficiently widespread may license and regulate them. The claims made by alternative medicine practitioners are generally not accepted by the medical community because evidence-based assessment is not available for the safety and efficacy of many of these practices. If scientific investigation establishes the safety and effectiveness of an alternative medical practice, it may be adopted by conventional practitioners. Because alternative techniques tend to lack evidence, some have advocated defining it as non-evidence based medicine, or not medicine at all. The US Institute of Medicine rejected the evidence-based approach to defining CAM because research suggests that many mainstream medical techniques lack solid evidence as well.[8]

A 1998 systematic review of studies assessing its prevalence in 13 countries concluded that about 31% of cancer patients use some form of complementary and alternative medicine.[9] Alternative medicine varies from country to country; Dr. Edzard Ernst believes that in Austria and Germany CAM is mainly in the hands of physicians,[7] although some estimates suggest that half of CAM is administered by physicians in the US.[10] In Germany, herbs are tightly regulated, with half prescribed by doctors and covered by health insurance based on their Commission E legislation.[11]

Contents

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Definitions and categorizations

General terms

There is no clear and consistent definition as to the exact nature of alternative or complementary medicines.[8] In a 2005 report entitled Complementary and Alternative Medicine in the United States[12] the Institute of Medicine (IOM) adopted this definition:

"Complementary and Alternative Medicine (CAM) is a broad domain of resources that encompasses health systems, modalities, and practices and their accompanying theories and beliefs, other than those intrinsic to the dominant health system of a particular society or culture in a given historical period. CAM includes such resources perceived by their users as associated with positive health outcomes. Boundaries within CAM and between the CAM domain and the domain of the dominant system are not always sharp or fixed."[12]

Other groups and individuals have offered various definitions and distinguishing characteristics. The National Center for Complementary and Alternative Medicine (NCCAM) defines CAM as "a group of diverse medical and health care systems, practices, and products, that are not currently part of conventional medicine."[13] NCCAM has developed what the IOM calls "[o]ne of the most widely used classification structures"[12] for the branches of complementary and alternative medicine.[13] The Cochrane Complementary Medicine Field says:

"What are considered complementary or alternative practices in one country may be considered conventional medical practices in another. Therefore, our definition is broad and general: complementary medicine includes all such practices and ideas which are outside the domain of conventional medicine in several countries and defined by its users as preventing or treating illness, or promoting health and well-being. These practices complement mainstream medicine by 1) contributing to a common whole, 2) satisfying a demand not met by conventional practices, and 3) diversifying the conceptual framework of medicine."[14]

David M. Eisenberg defines it as "medical interventions not taught widely at US medical schools or generally available at US. hospitals,"[15] while Richard Dawkins sardonically defines it as a "set of practices which cannot be tested, refuse to be tested, or consistently fail tests."[16]

The term "alternative medicine" is generally used to describe practices used independently or in place of conventional medicine. The term "complementary medicine" is primarily used to describe practices used in conjunction with or to complement conventional medical treatments. NCCAM suggests "using aromatherapy therapy in which the scent of essential oils from flowers, herbs, and trees is inhaled in an attempt to promote health and well-being and to help lessen a patient's discomfort following surgery"[13] as an example of complementary medicine. The terms "integrative" or "integrated medicine" indicate combinations of conventional and alternative medical treatments which have some scientific proof of efficacy; such practices are viewed by advocates as the best examples of complementary medicine.[13] Ralph Snyderman and Andrew Weil go so far as to claim that "integrative medicine is not synonymous with complementary and alternative medicine. It has a far larger meaning and mission in that it calls for restoration of the focus of medicine on health and healing and emphasizes the centrality of the patient-physician relationship."[17] The combination of orthodox and complementary medicine with an emphasis on prevention and lifestyle changes is known as Integrated health.

NCCAM classifications

NCCAM classifies complementary and alternative therapies into five major groups. The classification are rather loose, and there can be some overlap.[18]

  • Mind-body medicine takes a holistic approach to health that explores the interconnection between the mind, body, and spirit. It works under the premise that the mind can affect "bodily functions and symptoms".[20]
  • Biologically based practices use substances found in nature such as herbs, foods, vitamins, and other natural substances.[21]
  • Manipulative and body-based practices feature manipulation or movement of body parts, such as is done in chiropractic and osteopathic manipulation.[22]
  • Energy medicine is a domain that deals with putative and verifiable energy fields:[23]
    • Biofield therapies are intended to influence energy fields that purportedly surround and penetrate the body. No empirical evidence has been found to support the existence of the "putative" energy fields on which these therapies are predicated.
    • Bioelectromagnetic-based therapies use verifiable electromagnetic fields, such as pulsed fields, alternating-current or direct-current fields in an unconventional manner. [24]

Contemporary use of alternative medicine

Template:Further Many people utilize mainstream medicine for diagnosis and basic information, while turning to alternatives for what they believe to be health-enhancing measures. Studies indicate that alternative approaches are often used in conjunction with conventional medicine.[25] This is referred to by NCCAM as integrative (or integrated) medicine because it "combines treatments from conventional medicine and CAM for which there is some high-quality evidence of safety and effectiveness."[18] According to Andrew T. Weil M.D., a leading proponent of integrative medicine, the principles of integrative medicine include: appropriate use of conventional and CAM methods; patient participation; promotion of health as well as treatment of disease; and a preference for natural, minimally-invasive methods.[26] A 1997 survey found that 13.7% of respondents in the United States had sought the services of both a medical doctor and an alternative medicine practitioner. The same survey found that 96% of respondents who sought the services of an alternative medicine practitioner also sought the services of a medical doctor in the past 12 months. Medical doctors are often unaware of their patient's use of alternative medical treatments as only 38.5% of the patients alternative therapies were discussed with their medical doctor.[27]

File:CDC CAM graph 2002.jpg
Age-adjusted percent of adults who have used complementary and alternative medicine: United States, 2002[28]

Edzard Ernst, Professor of Complementary Medicine at the University of Exeter, wrote in the Medical Journal of Australia that "about half the general population in developed countries use complementary and alternative medicine (CAM)."[29]Survey results released in May 2004 by the National Center for Complementary and Alternative Medicine, part of the United States National Institutes of Health, found that in 2002 62.1% of adults in the country had used some form of CAM in the past 12 months and 75% across lifespan (though these figure drop to 36.0% and 50% if prayer specifically for health reasons is excluded); this study included yoga, meditation, herbal treatments and the Atkins diet as CAM.[25][30] Another study suggests a similar figure of 40%.[31] A British telephone survey by the BBC of 1209 adults in 1998 shows that around 20% of adults in Britain had used alternative medicine in the past 12 months.[32] Ernst has been active politically on this issue as well, publicly requesting that Prince Charles recall two guides to alternative medicine published by the Foundation for Integrated Health, on the grounds that “[t]hey both contain numerous misleading and inaccurate claims concerning the supposed benefits of alternative medicine" and that "[t]he nation cannot be served by promoting ineffective and sometimes dangerous alternative treatments.”[33] In general, he believes that CAM can and should be subjected to scientific testing.[34][35]Cite error: Closing </ref> missing for <ref> tag In the United Kingdom, a 2000 report ordered by the House of Lords suggested that "...limited data seem to support the idea that CAM use in the United Kingdom is high and is increasing."[36] In developing nations, access to essential medicines is severely restricted by lack of resources and poverty. Traditional remedies, often closely resembling or forming the basis for alternative remedies, may comprise primary health care or be integrated into the health care system. In Africa, traditional medicine is used for 80% of primary health care, and in developing nations as a whole over one third of the population lack access to essential medicines.[37]

Advocates of alternative medicine hold that the various alternative treatment methods are effective in treating a wide range of major and minor medical conditions, and contend that recently published research (such as Michalsen, 2003,[38] Gonsalkorale 2003,[39] and Berga 2003[40]) proves the effectiveness of specific alternative treatments. They assert that a PubMed search revealed over 370,000 research papers classified as alternative medicine published in Medline-recognized journals since 1966 in the National Library of Medicine database. See also Kleijnen 1991,[41] and Linde 1997.[42]

Complementary therapies are often used in palliative care or by practitioners attempting to manage chronic pain in patients. Complementary medicine is considered more acceptable in the interdisciplinary approach used in palliative care than in other areas of medicine. "From its early experiences of care for the dying, palliative care took for granted the necessity of placing patient values and lifestyle habits at the core of any design and delivery of quality care at the end of life. If the patient desired complementary therapies, and as long as such treatments provided additional support and did not endanger the patient, they were considered acceptable."[43] The non-pharmacologic interventions of complementary medicine can employ mind-body interventions designed to "reduce pain and concomitant mood disturbance and increase quality of life."[44] Physicians who practice complementary medicine usually discuss and advise patients as to available complementary therapies. Patients often express interest in mind-body complementary therapies because they offer a non-drug approach to treating some health conditions.[45] Some mind-body techniques, such as cognitive-behavioral therapy, were once considered complementary medicine, but are now a part of conventional medicine in the United States.[46] "Complementary medicine treatments used for pain include: acupuncture, low-level laser therapy, meditation, aroma therapy, Chinese medicine, dance therapy, music therapy, massage, herbalism, therapeutic touch, yoga, osteopathy, chiropractic treatments, naturopathy, and homeopathy."[47]

The use of alternative medicine appears to be increasing, as a 1998 study showed that the use of alternative medicine had risen from 33.8% in 1990 to 42.1% in 1997.[48] In the United Kingdom, a 2000 report ordered by the House of Lords suggested that "...limited data seem to support the idea that CAM use in the United Kingdom is high and is increasing."[36]

In defining complementary medicine in the UK, the House of Lords Select Committee determined that the following therapies were the most often used to complement conventional medicine:[49]Alexander technique, Aromatherapy, Bach and other flower remedies, Body work therapies including massage, Counselling stress therapies, hypnotherapy, Meditation, Reflexology, Shiatsu, Maharishi Ayurvedic medicine, Nutritional medicine, and Yoga.

Public use in the US

File:Botanica.jpg
A botánicas such as this one in Jamaica Plain, Massachusetts cater to the Latino community and sell folk medicine alongside statues of saints, candles decorated with prayers, and other items.

A 2002 survey of US adults 18 years and older conducted by the National Center for Health Statistics (CDC) and the National Center for Complementary and Alternative Medicine indicated:[25]

  • 74.6% had used some form of complementary and alternative medicine (CAM).
  • 62.1% had done so within the preceding twelve months.
  • When prayer specifically for health reasons is excluded, these figures fall to 49.8% and 36.0%, respectively.
  • 45.2% had in the last twelve months used prayer for health reasons, either through praying for their own health or through others praying for them.
  • 54.9% used CAM in conjunction with conventional medicine.
  • 14.8% "sought care from a licensed or certified" practitioner, suggesting that "most individuals who use CAM prefer to treat themselves."
  • Most people used CAM to treat and/or prevent musculoskeletal conditions or other conditions associated with chronic or recurring pain.
  • "Women were more likely than men to use CAM. The largest sex differential is seen in the use of mind-body therapies including prayer specifically for health reasons".
  • "Except for the groups of therapies that included prayer specifically for health reasons, use of CAM increased as education levels increased".
  • The most common CAM therapies used in the US in 2002 were prayer (45.2%), herbalism (18.9%), breathing meditation (11.6%), meditation (7.6%), chiropractic medicine (7.5%), yoga (5.1%), body work (5.0%), diet-based therapy (3.5%), progressive relaxation (3.0%), mega-vitamin therapy (2.8%) and Visualization (2.1%)

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