July 2nd, 2009 by Steve Novella, M.D. in Better Health Network, Quackery Exposed
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When patients ask me if a chiropractor can help them with their problem, I often think to myself, “OK, do I give them the short answer or the long answer?” The difficulty is often in the fact that chiropractic is a diverse profession and it is difficult to even characterize what a “typical” chiropractor is likely to do. As a chiropractor once admitted to me – there are a great many things that happen under the umbrella of “chiropractic.”
In this article I will summarize some of the history and practice of chiropractic, highlighting what I consider to be many of the enduring problems with this profession.
History
Chiropractic was founded in 1895 by Daniel David Palmer, a grocer with an intense interest in metaphysics. Prior to his “discovery” of chiropractic, D.D. Palmer was a magnetic healer. He also had interests in phrenology (diagnosing disease based on the bumps of the skull) and spiritualism. Palmer reported to have discovered the principle of chiropractic when he allegedly cured a janitor of his deafness by manipulating his neck. The fact that the nerve which conveys sound information from the ears to the brain does not pass through the neck did not seem to bother Palmer, if he was even aware of this fact.
Palmer created the term “chiropractic,” which literally means “done by hand,” to refer to his new therapy. He argued that all disease is caused by subluxated bones, which 95% of the time are spinal bones, and which disrupt the flow of innate intelligence. He did not subject his ideas to any form of research, but rather went directly to treating patients and to teaching his principles to the first generation of chiropractors.
Subluxation Theory
Palmer believed in the pre-scientific vitalistic notion that health stems from the flow of a spiritual life force. Although vitalism was rapidly declining within scientific thought by the end of the 19th century, it was the centerpiece of early philosophies of health in most cultures. Palmer borrowed this ancient belief and renamed it “innate intelligence” which he claimed flowed from the brain to the rest of the body through the spinal cord and peripheral nerves. All disease, he argued, results from disruption in the flow of innate intelligence. Disruption in flow is caused by spinal subluxations, which are small misalignments in the spine that compress the spinal nerves.
Therefore, liver disease is caused by a subluxation which compresses the spinal nerve which supplies the liver with life force, depriving it of its vital innate intelligence. Palmer therefore believed he could cure by fixing these misalignments with manipulation.
This idea has remained the cornerstone of chiropractic despite advances in neurobiology and anatomy which have failed to show any evidence for innate intelligence or chiropractic subluxations. Many continue to ascribe all disease to the blockage of innate intelligence despite scientific advances in medicine which have discovered infectious, genetic, autoimmune, degenerative, nutritional, and other causes for many of the diseases which plague mankind.
Chiropractic was also not the only tradition based upon manipulating the bones. Of note, osteopathic doctors also developed an art of bone manipulation in order to heal, but they believed they were unblocking blood flow through arteries. Osteopathy and chiropractic had similar roots, but took very different paths, as we will see.
D.D. Palmer’s son, B.J. Palmer, became involved in the chiropractic movement early on, during the formative years. B.J shared his father’s metaphysical bent (prior to chiropractic, he worked with a mesmerist and worked in the circus), his tendency to make sweeping statements about health without justification, and his ignorance of contemporary scientific knowledge. He was reported to state, for example, “When I saw there was no use for a sympathetic nervous system, I threw it out, and then just had to put something better in its place, so I discovered Direct Mental Impulse.” B.J. also “discovered” a non-existent “Duct of Palmer” connecting the spleen to the stomach. In 1907 B.J. engineered a hostile take over of his father’s school of chiropractic.
B.J. Palmer set the tone that would later dominate the field of chiropractic. He emphasized salesmanship, advertising, and practice building. He was highly critical of medicine, stating that M.D. stands for “more death.” He continuously sought new methods for increasing revenues, such as his neurocalometer, which would pinpoint subluxations by measuring skin temperature and he decreed must be rented from him by other practitioners at exorbitant fees.
From the beginning chiropractors were also politically aggressive. They sought licensure as a protection from the growing scientific medicine with which they were completely at odds. Many legislators were reluctant to license chiropractors for this reason, but as more and more states voted in licensure, it became increasingly difficult to fight. Additionally, many legislators looked upon licensure as way of controlling the scope of chiropractic. By 1925, 32 states had instituted licenses for chiropractors. The struggle ended in 1974 when Louisiana instituted licensing.
Many states then began to pass basic science board requirements for licensure, making chiropractors pass the same tests of basic science knowledge as medical and osteopathic students. This was justified by the fact that chiropractors were presenting themselves as primary practitioners. However, where roughly 86 percent of medical students passed their basic science boards between 1927 and 1953, only 23 percent of chiropractors did. Chiropractors who could not pass the boards either moved to another state without the requirement, or practiced without a license. Between 1967 and 1979 all of the basic science laws for chiropractors were repealed.
Over the years chiropractic has never ceased its tireless struggle for growth and acceptance. Despite the fact that scientific medicine has continued to progress and chiropractic has never shed its pseudoscientific origins, they have been quite successful. After licensure, they gained coverage under Medicare. They have also successfully sued the AMA to stop their antichiropractic campaign. Today they continue to lobby hard for increased coverage and access under health insurance and HMO policies.
Straights, Mixers, and Reformers
Almost since the beginning, chiropractic has been fraught with many internal schisms. Today there is a wide range of differences between individual chiropractors, but most can be placed within one of three basic types.
Straight chiropractors consider themselves the only true or pure chiropractors because they limit their practice to the identification and treatment of spinal subluxations. They adhere strictly to Palmer’s concept of disease and believe that all ailments can be treated through manipulation to restore the flow of innate intelligence. Once freely flowing, they believe innate intelligence has unlimited power to naturally heal the body.
Straight chiropractors are the most extreme in their anti-scientific views. They openly advocate a philosophical rather than a scientific basis for health care, calling mainstream medicine “mechanistic” and “allopathic.” They call physicians “drug pushers” and disparage the use of surgery. They are careful not to give diseases names, but none-the-less they claim to cure disease with their adjustments. They oppose vaccinations. They also openly advocate the replacement of scientific medicine with chiropractic as primary health care. The statements of Dr. Wilson A. Morgan (who just passed away earlier this month), previous Executive Officer of Life College School of Chiropractic, are typical:
“Chiropractic: The health care system whose time as the official guardian of the public’s health is fast approaching!”
“On the other hand, it is equally appropriate for chiropractors to be viewed as generalists in that the far-reaching effects of their highly specific spinal adjustments usually are followed by the decrease and often disappearance of a very broad array of symptoms, disabilities and pathological conditions.”
“Unlike the medical profession, chiropractic has a very strong philosophical basis, which no doubt has contributed to its having been labeled ‘unscientific’ by the more mechanistically-oriented scientific community.”
“It appears that education will prove to be the best strategy in the ‘war on drugs,’ including education about the dangers of drugs available on the street and also those available from the physician as prescriptions.”
Mixers, comprising the largest segment of chiropractors, may at first seem more rational. They accept that some disease is caused by infection or other causes and they do not limit their practice to fixing subluxations. Most chiropractors in this group, however, do not supplement subluxation theory with scientific medicine, but rather with an eclectic array of pseudoscientific alternative practices. Mixers commonly prescribe homeopathic and herbal remedies, practice acupuncture and therapeutic touch, diagnose with iridology, contour analysis, and applied kinesiology, and adhere to the philosophy of naturopathy. This broad use of unproven, unscientific, and fanciful so-called “alternative” practices clearly indicates an antiscience attitude, as well as a lack of scientific knowledge, on the part of those chiropractors who employ them.
The rhetoric of Mixers indicates that they are attempting to become accepted into the scientific mainstream, rather than replace scientifically based medicine with a philosophy based approach. They no longer openly oppose immunization, like straights do, but they do advocate the freedom to choose whether or not to be immunized. Their appeal to freedom is emotionally effective, especially in the United States, but it fails to recognize that immunization is far less effective in eliminating or containing infectious diseases when it is not given to everyone. They also advocate a role for chiropractors as a primary care portal of entry system within HealthCare, despite the fact that they lack adequate training as generalists skilled in medical diagnosis.
A small minority of chiropractors, numbering only about 1,000, or 2% of all chiropractors (these are rough estimates because accurate figures are lacking), have been openly critical of their own field. They have called for absolute rejection of the subluxation theory of illness, disposing of pseudoscientific and unethical practices by chiropractors, and the restriction of chiropractic to treating acute musculoskeletal symptoms. They are attempting to bring their field into the scientific mainstream.
Occasionally chiropractic reformers have attempted to forge a new profession, entirely shedding the pseudoscience attached to the chiropractic brand. About ten years ago one group in Canada renamed themselves “Orthopractors,” and considered the new discipline of orthopractic as distinct from chiropractic. Orthopractic is the use of manipulation to provide symptomatic relief from uncomplicated acute back strain. They do not believe in maintenance therapy, treating medical ailments, or the use of pseudoscientific alternative practices.
Unfortunately, this reform effort died because “orthopractic” did not exist as a legal entity. This also partly explains why the “chiropractic” label persists and covers such a wide range of philosophy and practice – because it exists as a recognized licensed profession. It has a regulatory inertia that is hard to combat.
To further complicate things, spinal manipulation exists outside of the chiropractic profession, and not all manipulation is chiropractic manipulation. Some physiatrists, sports medicine doctors, and osteopaths legitimately employ manipulative therapy to relieve muscle strain, mobilize joints, and improve function. Chiropractors do this as well. But some chiropractors also do chiropractic manipulation designed to realign the spine and reduce imaginary chiropractic subluxations.
The Evidence – Subluxations
In the past 100 years, there has been very little research conducted into the basic principles of straight chiropractic. There is no research that indicates the existence of innate intelligence or that such a force plays any role in health and disease. Further, the evidence strongly suggests that chiropractic subluxations are a figment of the chiropractic imagination. And it also seems that spinal manipulation is not capable of realigning the vertebra of the spine.
A study carried out by Edmund Crelin, Ph.D. investigated the amount of force necessary to displace vertebral bones of the spine in order to cause impingement of a spinal nerve. The study was carried out on six corpses within 8 hours after death. His conclusion was that the amount of force necessary to actually displace the vertebra was great enough to break the spine, arguing strongly that chiropractic manipulation cannot significantly affect spinal alignment, and that misaligned spines do not caused pinched nerves (Crelin, 1973).
Pinched or impinged spinal nerves do occur, but they are caused by herniated discs, fractures, tumors, or overgrowth of the vertebral bones. When spinal nerves are impinged they cause pain, numbness, and tingling and may cause a decrease or loss of deep tendon reflexes and weakness of the muscles supplied by the affected nerve. Impinged nerves are not caused by subluxations nor do they result in diseases of the organs. Believers in subluxation theory must claim, implausibly, that nerve impingement causes only a blockage of innate intelligence without causing any of the known signs and symptoms of such impingement.
Ironically, spinal manipulation is contraindicated in cases of actual nerve impingement and should not be performed. In medical studies of manipulation, such as the RAND study, often cited by chiropractors as evidence for manipulation, spinal nerve impingement was considered a reason not to have manipulation and therefore was a criteria for exclusion from the study.
Another source of evidence that the chiropractic theory of subluxations and innate intelligence is completely false comes from the unfortunate victims of spinal trauma. There are many victims of complete transection, or disruption, of the cervical spinal cord in the neck. Such a complete injury leaves its victim quadraplegic, unable to move the arms or legs. If the injury is high enough in the spinal cord the victim may not even be able to breath on their own. In such victims no impulses from the brain are able to travel below the spinal cord in the neck, and therefore most of the communication between the brain and the body is interrupted. Certainly, this is a much more dramatic and complete interference of nerve flow than that of an impinged spinal nerve.
Yet, in these patients, the organs continue to work without difficulty and diseases do not develop at any higher rate than those without such an injury. Of course, there are some effects from the disruption of the autonomic nervous system, that part of the nervous system which regulates the bladder, the degree of bowel motility, and other functions. But all effects of spinal cord damage are caused by known neurological injury. If subluxation theory were correct, then patients with high spinal cord injuries would be ravaged by every conceivable disease.
So chiropractors cannot realign the spine to fix imaginary subluxations and restore the flow of nonexistent innate intelligence. Subluxation theory is pure pseudoscience, like homeopathy or therapeutic touch, and has no place in a 21st century scientific health care system.
Despite the extreme scientific implausibility of subluxation theory, specific applications have been tested with clinical research – with predictable results. For example, many chiropractors will use manipulation to treat asthma is children. The results of this research are soundly negative – chiropractic does not work on asthma.
Despite this many chiropractors persist in treating asthma. This led Simon Singh to write in the Guardian in 2008 that the British Chiropractic Association, which does advocate chiropractic for childhood asthma, “promotes bogus therapies.” In response to this statement the BCA notably did not provide the evidence that Singh claimed was missing. Rather, they sued him for libel (the case is ongoing).
Next week I will cover the evidence for musculoskeletal uses of chiropractic.
*This blog post was originally published at Science-Based Medicine*
March 1st, 2009 by Dr. Val Jones in Health Policy, Opinion
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The AMA’s communications department kindly sent me a copy of a letter that they (and 9 other professional society CEOs or Presidents) recently sent to Barack Obama and 12 members of congress. I’ve been blogging about the fact that healthcare providers in general, and physicians in particular, do not seem to have much of a voice in healthcare policy. In fact, from what I can tell, Dr. Nancy Nielsen is carrying the torch almost exclusively. I don’t mean to belittle anyone’s efforts, it’s just that I’ve noticed that she is often the only physician at the highest level policy meetings.
So it was with great interest that I read the group letter to Obama et al., wondering what collective message our physician leaders were trying to get across. The writing was academic – using terminology familiar to those heavily steeped in medicine – and emphasized the creation of a patient-centered culture supported by evidence based medicine.
However, the letter raised an interesting question in my mind: Will members of congress read and understand it? I believe that the most effective letters to congress are likely to share three qualities: 1) they must be emotionally provocative 2) they must be written at about the 6th grade reading level 3) they must be brief.
Why Letters Must Appeal To Emotion (“Cultural Competency”)
Dr. Nielsen said at a recent Medicare Policy Summit that speaking with Senators can be “pure theatre.” That has been my observation as well. Decades of experience speaking in large committee meetings have taught them that amusing sound bites or emotional outbursts get attention. In fact, it may be the best way to get things done in congress. For example, did you know that the reason why kidney care is the only disease-based eligibility under Medicare is that Shep Glazer testified before congress during one of his dialysis sessions?
Washington , D.C. , Nov. 4, 1971 – In the most dramatic plea ever made on behalf of kidney patients, Shep Glazer, Vice-President of NAPH, testified before the House Ways and Means Committee while attached to a fully functioning artificial kidney machine.
Minutes before, in the corridor outside the hearing room, Shep told reporters from the AP, UPI, and the Washington Post, “Gentlemen, I am going to tell the Committee that if dialysis can be performed on the floor of Congress, it can be performed anywhere.” As his wife, Charlotte , connected him to the machine, he continued, “Kidney patients don’t have to be confined to hospitals, where expenses are $25,000 a year and more per patient. It’s much cheaper in a satellite unit or at home. I want to show the Committee what dialysis is really like. I want them to remember us.”
My point is that in congress, as opposed to medical meetings, emotion is king. Physicians have a hard time speaking from the gut, since we’re trained to speak from data – because we know that the gut can be misleading. However, my plea to physician groups is this: let’s collect our data, understand the science behind our point of view, and then present our advice in a way that is persuasive to congress. That means we’d probably benefit from a few theatre classes (can we get CME credit for them?) I’m not suggesting that we become undignified in any way – I’m just saying that personal stories, case studies, and appeals to emotion are the currency on the Hill. If we want attention, we’ll need to find a way to make our points in their own language.
For example, I was listening in to a recent Senate hearing on healthcare finance, when a Republican senator began his introductory remarks about “out of control spending” with this:
I must tell you that I have major concerns about our current approach to spending. We’ve already sunk billions of dollars into all kinds of bailouts and programs without any clear benefits. But every time I bring up the excessive spending issue, you’d think I was a skunk at a picnic…
An amusing analogy, and one that resonated with his peers. This Senator understood the culture to which he was speaking. In other words, he had a “culturally competent” message.
Why Letters Should Be Written At About The 6th Grade Reading Level (Health Literacy)
Dr. Richard Carmona told me that one of the first things he learned as Surgeon General was that the American people understand health information at a 6th grade reading level. Thus, there is no point in making a 100+ page medical report on the health hazards of smoking the corner stone of a public smoking cessation campaign.
Health information must be written in a clear, and actionable manner – but it must also be delivered in such a way that it resonates with diverse communities. Letters to congress are no different – many of our congressmen and women do not have advanced medical or science degrees. We must be sensitive to that and write to them in a way that makes it easy for them to understand what we’re hoping to accomplish.
Why Letters Must Be Very Brief
Much has been made of the fact that many people who signed the recent 1000+ page stimulus bill hadn’t actually reviewed it. In fact, it is estimated that 306 members of Congress voted for a bill they had not read.
Of the 535 members of the United States House and Senate, 246 House members and 60 members of the august Senate voted for the $787 billion stimulus bill without having read a single one of the bill’s 1,071 pages or having any idea of where all of this money borrowed from our grandchildren is going to be spent.
So if our members of Congress don’t read the stimulus bill, will they take the time to read long letters from professional societies? I think you know the answer.
Conclusion
The AMA should be applauded for their lobbying efforts on the part of physicians in Washington. However, my personal view is that letters to congress may be more effective if they are written in a concise, jargon-free, compelling way that respects the “culture” of congress. We physicians hear a lot about “health literacy” and “cultural competency” – and must remember to apply those principles to letter-writing campaigns.
Will any letter influence congressional decision-making? It’s hard to measure the “ROI” of group letters to congress – and certainly they’re only one part of a larger strategy. However, it behooves us physicians to find ways to reach across the cultural divide to speak to congress about the issues that trouble us all: the fate of patients. Letters may be helpful, but an increased presence in Washington, along with some heartfelt reasoning, may be our best shot. Perhaps the Broadway actors affected by the economic recession could help us out?
February 23rd, 2009 by Dr. Val Jones in Expert Interviews, Health Policy, Uncategorized
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Today there was a Fiscal Responsibility Summit held at the White House. Bill Novelli, CEO of the AARP attended the summit as part of the work group on health. Bill reported what he observed in his work group (which consisted of notables such as Senators Baucus, Rangel, and Specter, Nancy Pelosi, Nancy Nielsen, MD, Becky Patton, RN, Rich Umbdenstock and others) on a special media conference call today.
The over-arching theme of the work group discussion, according to Bill, was prevention and wellness. The group agreed that the key to improving Americans’ quality of life and controlling the costs of chronic disease lies in preventive health efforts. In addition to this belief, the group agreed that:
1. Healthcare reform must be achieved as quickly as possible. The path to long term entitlement sustainability requires healthcare reform. Simply expanding access to a broken system is not the solution.
2. The American people need to be engaged in reform efforts – not just as patients, but as tax payers and voters. They need to understand what they will gain and lose.
3. We must reward adherence to best practices and healthcare quality.
4. A public-private partnership is critical to achieving reform.
A few interesting points were raised by various stakeholders in the meeting:
1. Arlen Specter – believes that changes in medical approaches to end-of-life care could decrease costs substantially. He called for more advanced directives, and education about end-of-life care options.
2. Dr. Nancy Nielsen – called for Medicare to fix the physician fee schedule.
3. Becky Patton – called for increasing the nurse and healthcare workforce.
4. Rich Umbdenstock – requested that more attention be focused on pay for performance and administrative simplification initiatives.
I asked Bill how many providers were included in his work group, and he mentioned three (Nielsen, Patton, and Umbdenstock – not really a provider himself). Best I could tell, there was only one physician and one nurse at the meeting. And that is fairly shocking to me.
If healthcare reform is happening without much input from the primary providers of care (doctors and nurses) – will the reform decisions made by these well-intentioned individuals make good clinical sense?
Another reporter asked Bill what he thinks will happen with healthcare reform in the near term. His answer was telling: “We don’t know.”
