Wellness Journal

Evidence literacy · 6 min

How to read health evidence without being misled

Most confusion in the wellness space comes from a single quiet substitution: a finding in cells or animals is described as though it were a finding in people. The biology may be genuinely interesting, and the leap may still be unjustified.

A useful hierarchy runs roughly like this. In-vitro work tells you something can happen in a dish. Animal work tells you something happened in a specific model organism under specific conditions. Early-phase human trials tell you about tolerability and pharmacokinetics in small groups. Larger randomised controlled trials, replicated independently, are where confident clinical conclusions begin.

When you read a claim, ask four questions. Who was studied, and are they like the person the claim is aimed at? What was actually measured — a clinical outcome, or a surrogate marker? How large was the effect, in absolute terms? And has anyone independent reproduced it?

Absence of evidence is not evidence of harm, but it is also not permission. Where our library says 'Insufficient', we mean exactly that: the honest answer today is that nobody knows, and any decision belongs with a clinician who can weigh your individual circumstances.

This article is educational and general in nature. It is not medical advice and does not describe any treatment, dose or protocol. Speak to a registered healthcare professional about your individual circumstances.