Truth matters (… and not just in medicine)

“Popularity takes the place of plausibility, tradition replaces validity, and individual experience is positioned above objective efficacy.”

This sentence (my translaation of the German original) comes from a book by Udo Endruscheit that I have been reading. It is entitled “Vom Zweifel zur Haltung: Eine Reise durch die Geschichte der Erkenntnis” (From Doubt to Conviction: A Journey Through the History of Knowledge) and outlines the epistemological development of truth from the early thinkers of antiquity to the postmodern voices of today. It traces how the concept of truth has changed, how it has been criticized, relativized, and deconstructed, and how these changes have shaped us and our thinking.

The statement was no necessarily meant to me applied to medicine, but it does aply capture a recurring epistemological pattern within large segments of so-called alternative medicine (SCAM). It describes a shift away from the truth towards criteria that are socially and psychologically compelling but scientifically nonsensical.

The substitution of popularity for plausibility is evident in the way many SCAMs have gained traction. Treatments such as homeopathy, naturopathic detox regimens, or paranormal energy-based healing have achieved global followings despite the fact that there can hardly be a mechanism of action that does not fly in the face of science. Their popularity is often driven by anecdotal endorsements, celebrity advocacy, and market forces rather than by convergence of experimental and theoretical support. Opinion counts more than truth, and the absence of plausibility in a SCAM is frequent and frequently ignored.

The elevation of tradition over validity is a defining feature of most SCAMs. Historical longevity is often presented as implicit evidence of effectiveness. “It would not have survived, if it were ineffective!” Yet, from a scientific perspective, tradition is a most unreliable indicator: ineffective or even harmful practices can persist for centuries in the absence of effectiveness and even safety. Bloodletting in pre-modern Western medicine offers a cautionary example. The critical issue is not whether a therapy is old, but whether it has been subjected to rigorous evaluation and shown to produce reproducible benefits that exceed placebo and other non-specific effects.

The dominance of individual experience over objective effectiveness is perhaps the most pervasive and psychologically persuasive cause of SCAM’s popularity. Patients’ testimonials, often sincere and seemingly compelling, are being touted as sufficient evidence of effectiveness. Yet individual experience is highly susceptible to regression to the mean, natural disease fluctuation, placebo effects, confirmation and other biases and confounders. Without proper comparisons, it is impossible to distinguish specific therapeutic effects from non-specific ones. Evidence-based medicine does not dismiss patient experience; rather, it contextualizes it with external evidence to avoid misleading us all.

The above statement by Udo Endruscheit was meant as a general characterisation of the way we currently handle and mishandle truth. As such it applies to much more than just SCAM. Yet, it also provides an apt critique of dominant tendencies within SCAM. Popularity, tradition, and personal experience are, of course, not inherently without value, but when they displace plausibility, validity, and objective effectiveness, they create a situation that is wide open to error, exploitation and often also harm.

In a nutshell: the truth matters; watering it down – as we all currently tend to do – carries serious risks in medicine as much as in life.

PS

I almost forgot!

Yes, I do recommend reading Udo’s most fascinating book.