Me:Ā Iām a vet tech student just starting my first clinical, and the hospital Iāve been placed at uses a low level laser on every incision, to āreduce pain and inflammation and speed up healingā. Iām skeptical, but certain that as a student being given a month-long learning opportunity, it would not be appropriate for me to bring up my concerns. (They already have a robust pain management protocol in place, so Iām not sure why additional therapies would even be necessary, but its not harming anyone.) The doctor claims that there is solid scientific evidence supporting its efficacy, but she also does acupuncture, so who knows. I feel like an idiot wearing goggles and waving a laser around, but writing off the whole thing as fake (or even just unproven) threatens my ability to trust what Iām learning from these people. Theyāre a long-established, well-respected, busy clinic with devoted clients. How does one separate the wheat from the chaff?
The SkepVet: Unfortunately, the way our human brains work, confidence in nonsense is not incompatible with being smart, competent, and well-meaning. Perfectly rational, excellent doctors who practice fundamentally sound medicine often throw in a little nonsense that they have great faith in. At its core, this faith usually comes from anecdotal evidence, their own or someone else's, which we know is unreliable. However, cognitive dissonance and confirmation bias, among other cognitive quirks, lead us to seek support for whatever we believe, regardless of where that belief comes from. Therefore, such folks often skim the scientific literature and unconsciously cherry pick from it, ignoring the flaws in studies that support their beliefs and exaggerating the limitations of research that doesn't. The end result is the absolute confidence that science supports whatever they happen to believe in, even when it really doesn't.
As you can see from my articles on the subject, there is not robust scientific evidence to support clinical uses of laser in small animal medicine. The evidence in favor is weak, and there are at least two clinical trials in dogs at this point showing no benefit. This will almost certainly not convince your mentors, who will either reinterpret the evidence in a way that agrees with their belief or fall back on the "well, I've seen it work for my patients" line, which of course can be used to support anything from lasers and stem cells to homeopathy and faith healing. This doesn't mean your teachers arenāt smart or right about other things, only that they share the same cognitive biases that lead all of us astray from time to time, particularly the trust in one's personal experiences regardless of contradictions in controlled research evidence.
My advice is to always ask for specific evidence for anything you wonder about, and to learn how to find and evaluate this evidence for yourself. That's what evidence-based medicine is all about, and you don't have to be a vet or an academic to utilize it. There probably is no value to challenging specific beliefs held by people you work with until you have an established relationship and they know you and the consistency of your scientific approach, not just to new or "alternative" therapies but to everything. I think I have changed minds about some things, but I have been in the same practice for almost 15 years, and I have aged into a position where people respect my knowledge and experience even when they disagree with me, so it's an easier place to raise controversial issues from than where you are. Take this experience as an opportunity to learn what you can, without giving up your own ability to think critically about what other folks claim, and also a chance to see how such dubious therapies take hold, and in the future this knowledge will help you to influence others as you progress in your career.