Evidence boundaries are the practical checks you run on a piece of information before you act on it: who created it, why it exists, and whether it is supported. They take less than a minute and they work on any source, from a clinic leaflet to a product page. The point is not to become sceptical of everything — it is to give each source the weight it has actually earned.
What are the three checks?
The checks are author, purpose and support, and each one asks a different question. MedlinePlus describes evaluating health information by looking at who provides it, why it was provided, and whether it is current and supported the MedlinePlus page on evaluating health information.
| Check | The question to ask | What a good answer looks like |
|---|---|---|
| Author | Who created this, and what are they? | A named organisation, clinician or source |
| Purpose | Why does this exist? | A stated aim rather than an implied sale |
| Support | What stands behind the claims? | Citations, or a checkable product record |
Three questions, one habit.
Why do these checks matter more for health claims?
Because health claims are hard to verify from the outside, so the source becomes the fastest available signal. You cannot personally test whether a treatment will suit you, and neither can a page. What you can do is see whether the people making the claim are willing to be identified and to show what supports it.
That is why the checks are about the source rather than about the science. You do not need to read a study to notice that a page cites one.
How do I apply them to a microneedling page?
Apply them in order, and stop when a source fails one. If a page does not say who is behind it, the other two checks cannot rescue it. If it names its author but never says what the claim rests on, you have found the limit of what that page can support.
For claims that survive the checks, the next question is how far the evidence behind them actually reaches. Microneedling evidence limits sets out where the published record is firm and where it thins out, and what to expect from a proposed treatment course shows how to turn a claim into a plan you can judge.
What the three checks give you
The three checks give you a fast filter, so your attention goes to the sources worth reading rather than to the ones that cannot be checked. A well-sourced page can still be describing thin evidence, which is why the checks come before the deeper reading rather than instead of it.
We invite the test on our own pages. Every claim here carries a named source, each page states what it is for, and there is a support route for the questions a page cannot settle. A customer who checks is a customer who stays.
Frequently asked questions
Do I need to understand statistics to use these checks?
No. The checks are about the source, not about the numbers. You are asking who, why and what support — three questions that need no training.
What does checking a source give you?
A way to decide how much weight to give it. A checkable source can still be describing weak evidence, so the check tells you whether the source is worth reading at all.
What if a page has no author at all?
Treat that as a failed check and look for a source that names itself. An unattributed health claim gives you nothing to verify.
How do these checks relate to reading the research?
They are the first filter that tells you which sources are worth reading. Deeper evidence reading comes after, and pointing you toward it is what the checks are for.
Run the checks on this page, then on the next one
Start with us: this page names its source, states its purpose and offers a contact. Then take the same three questions to whatever you read next — and if you want the version built for comparing sellers, read how to tell health information from marketing.