“Horrifying truth about chiropractors and why paralysis, strokes and deaths are far more common than you’d imagine”

Yes, this was the (rather sensationalist) headline of a recent article in the Daily Mail that I allegedly wrote. Its unusual genesis might interest some of you.

I was contacted by a journalist who asked for a telephone interview on the subject of chiropractic as well as my recent book. I agreed under the condition that we do this not over the phone but in writing via email. So, he sent me his questions and I supplied the responses; here they are:

· What’s the absolute worst case scenario of seeing a chiropractor?

The worst that can happen is that you die. Certain manipulations that chiropractors regularly do can injure an artery that supplies part of the brain. This would then result in a stroke; and a stroke can of course be fatal. This is what happened, for example, to the American model Katie May. She had pinched a nerve in her neck on a photoshoot and consulted a chiropractor who manipulated her neck. This caused a tear to an artery in her upper spine. The result was a massive stroke of which she died a few days later.

· How did you first become interested in the topic?

I learned hands on spinal manipulation as a junior doctor. Later, as the head of the department of Physical Medicine and Rehabilitation at the University of Vienna, we used such techniques routinely. In 1993, I became chair of Complementary Medicine in Exeter, and my task was to scientifically investigate alternative therapies such as chiropractic. Recently, I decided to summarize all our research in a book.

· What did you learn from your research?

In essence, our investigations found that almost all the claims that chiropractors make are unsubstantiated. Their manipulations are not nearly as effective as they claim. More worryingly, they are also not free of risks. About 50% of patients who see a chiropractor suffer from side effects after spinal manipulation. These are usually not severe and disappear after 2 or 3 days. But, in addition, very serious complications like stroke, death, bone fractures, paralysis can also occur. Chiropractors say that these are rare, and I hope they are right, but the truth is that nobody knows because there is no system of monitoring such events. We once asked British neurologists to report cases of neurological complications occurring within 24 hours of cervical spine manipulation over a 12-month period. This unearthed a total of 35 cases. Particularly striking was the fact that none of these cases had previously been reported anywhere. So, the underreporting was exactly 100%. This tells me that, when chiropractors claim there are just a few such incidents, in truth there might be a few hundred or even thousand.

· Is there an especially shocking finding?

What I find particularly unnerving is the way chiropractors regularly disregard medical ethics. Take the issue of informed consent, for example. It means that we all have to fully inform patients about the treatment we plan to give. In the case of chiropractic spinal manipulation, it would need to include that the therapy is of doubtful effectiveness, that other options are more likely to help, and that the treatment carries very frequent minor as well as probably rare major risks. I do understand why chiropractors do often not provide this information – it would chase away most patients and thus impact of their income. At the same time, I feel that chiropractors should not be allowed to violate fundamental principles of medical ethics. This is not in the interest of patients!!!

· Why do you think patients are so keen on chiropractors?

I am not sure that they really are so keen; some are but the vast majority are not. Our own research suggests that, depending on the country, between 7 and 33% of the population see chiropractors. This means that between 93 and 67% have enough sense to avoid chiropractors.

· But what does the evidence actually show about the efficacy of chiropractic?

As it happens our most recent summary has just been published. It concluded that “it is uncertain if chiropractic spinal manipulation is more effective than sham, control, or deep friction massage interventions for patients with headaches” [Is chiropractic spinal manipulation effective for the treatment of cervicogenic, tension-type, or migraine headaches? A systematic review – ScienceDirect]. For other conditions the evidence tends to be even less convincing. The only exception might be chronic low back pain, according to another recent summary [Analgesic effects of non-surgical and non-interventional treatments for low back pain: a systematic review and meta-analysis of placebo-controlled randomised trials | BMJ Evidence-Based Medicine]. But here too, I would argue that other treatments are safer and cheaper.

· Are some chiropractors worse than others?

The profession is divided into 2 groups, the ‘straights’ and the ‘mixers’. The former believe in all the nonsense their founding father, DD Palmer, proclaimed 120 years ago, including that spinal manipulation is the only treatment for virtually all our ailments, and that vaccinations must be avoided at all cost. The mixers have realized that Palmer was a charlatan of the worst kind, focus on musculoskeletal conditions and use treatments borrowed from physiotherapy. Needless to say that the mixers might be bad, but the straights are even worse.

· What can patients do to keep safe?

Avoid chiropractors, go to a library and read my book.

· If you have backpain or joint pain what can you do instead?

There is lots people can do but advice has to be individualized. By far the best is to prevent back pain from happening. Here advice might include more exercise, loosing weight, changing your mattress, avoiding certain things like heavy lifting, etc. If you are acutely suffering, see a physio or a doctor, keep moving and be aware that over 90% of back pain disappears within a few days regardless of what you do.

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I had insisted that I see his edits before this gets published, and a little while later I received the edited version. To my big surprise, the journalist had transformed the interview into an article allegedly authored by me. I told him that I was uncomfortable with this solution, and we agreed that he would make it clear that the article was merely based on an interview with me. I then revised the article in question and the result was the mentioned article published still naming me as its author but with a footnote: “As told in an interview with Ethan Ennals”

Never a dull day when you research so-called alternative medicine!