Zev,
I have a reasonably extensive medical and scientific background, including studying molecular biology at CU and being a former paramedic. I know how to read the literature, and I know the limits of studies. Here is what it comes down to:
- There is no scientific basis for subluxation theory, which is accepted by the vast majority of chiropractors according to their own literature.
- This is further not backed with research showing much overall effectiveness. A few potential use cases stand out and should be studied more.
- This is in contrast to your examples. There is actually quite a lot of good science behind vaccinations, and in those cases we can use epidemiological studies and basic math to see effectiveness. The model behind vaccines is testable, and epidemiology can test it in the field without a double blind study. The science behind vaccines is ridiculously clear (hopefully you believe that, I’m not going to assume you are anti-vax based on you picking that example). There is no equivalent for most chiropractic use.
What I would expect to see from chiro to change my beliefs is a model that passes basic science, some way to test it, and results. The field hasn’t provided that, and the model behind it is provably, fundamentally, flawed.
Now, I have met chiropractors that are closer to physical therapists. They don’t believe in subluxation theory, they do believe in germ theory, and they limit themselves to SMT techniques that show the most promise based on the scientific evidence. Techniques also used by some doctors and PTs. But that basically makes them chiropractors in name only, since they no longer follow the primary teachings of the field they learn in school.
Look, this is the Internet. We can battle references all day. For people that haven’t made up their mind, they should look at the links I provided and what you will provide later and make up their own mind. If you find a chiropractor that doesn’t follow subluxation theory then the odds are better they know the limits of manipulation and won’t sell you on garbage. The OP was clearly talking to someone else.
And if something makes you feel good, and doesn’t hurt you, and you believe in it… crack on. I probably spent more on bike gear that won’t affect my race results (because I’m too slow for it to matter) than you would spend on treatments, whether they work or not.
Thank you for your honesty:
You are exactly what I was referring to: Someone with enough medical background (paramedic) to think they understand clinical case management at the physician level (as defined by Medicare and the Joint Commission). Please don’t be insulted, thats just a fact.
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Subluxation theory evolved from a static model somewhere around when I was born to a motion based model. All modern research supports this. All it takes is some basic research into mechanoreceptor inhibition of nociception in vivo studies to understand why a restricted or fixated joint can cause all kinds of problems, and getting it to move generally is beneficial, no matter who does it.
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Here are a collection of the most recent studies of 2013 and 2014. As stated previously
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Just an example for the sake or argument on your end about the lack of research, we can move on 
The big picture is that you are assuming that manipulation differs dramatically when a DC performs vs a PT/DO. For HVLV (thrusting) there isn’t, and within the scope of manual care, we use the same tools. I’ve read the textbooks for all professions regarding manipulation, there is no major difference. So your argument is really that manipulation in your opinion isn’t documented well by research. But assuming manipulation is all I do is like assuming all a physical therapist does is give you exercises. It’s not even close.
I think you would accept that being able to choose: It’s generally its better to permanently fix a problem without surgical intervention or prescription medication than with if given the choice. Chiropractors, by intentionally taking the prescription of medications out of the equation, force themselves to be as accomplished as possible at helping the human body with a plethora of non-surgical tools. PT’s are the same, DO’s who do not prescribe are the same. This again is common sense. Manipulation is a tool, and not the only tool. But if you are trying to tell me manipulation doesn’t work when I treat a patient with an acute rib fixation who can’t take a deep breath without sharp severe pain,and I remove 75% of that pain in one adjustment. I’m going to politely laugh at your close mindedness, but fell truly sad that your uninformed voice could really hurt someone else’s ability to get help.
The largest single group of my patient base are physicians, nurses, NP’s, DO’s, neurologists, and other medical providers. When they come in for a problem and I explain to them exactly what is going on on a science based background, they understand and, 95% of the time, we accomplish their goals. When I don’t think my tools can help someone, I refer out: Standard of care. There is zero of this nonsense amongst my medical peers.
I would say this: For people that haven’t made up their mind, they should remember that they are a consumer. Choose a provider based on excellent referrals and reputation!. If you aren’t moving in the right direction in 3-6 treatments, consider a different provider or a different approach. With very little exception, thats the standard I hold myself to.
Tridana NAILS it: It is not the profession, it is the practitioner.