Every article on the Flexwell blog carries one of three evidence ratings. They are not decoration. They are an honest signal of how much confidence the current science warrants for the main claims in that piece. Here is exactly what each one means and how we assign it.
The claim rests on well-established mechanisms, a large or consistent body of human evidence, or formal recognition by regulatory or clinical bodies. This is the kind of finding that is unlikely to be overturned by the next study. Examples on this blog include well-documented mineral absorption interactions and the link between long-term metformin use and lower B12 levels.
There is real human evidence, but it is limited. That might mean a small number of trials, mixed or partial results, or an area that is promising and gaining mainstream attention but not yet settled. We find these topics genuinely useful, and we are careful to flag what we still do not know. Examples include berberine's metabolic effects and creatine's emerging role in cognition.
The evidence is early, thin in humans, heavily based on animal or lab studies, or genuinely unsettled. These topics can be interesting and worth understanding, but they are not the basis for confident decisions. We label them clearly so the hype does not get ahead of the science. BPC-157 is a current example.
Many articles cover both a well-supported point and a shakier one. In those cases we rate the overall confidence the piece warrants, which usually lands at Moderate. The rating always matches the honesty of the article itself. If the writing hedges, the badge will not say Strong.
An evidence rating keeps us accountable and keeps you informed at a glance. It is the clearest way we know to put evidence over hype, on every single article, every time.
Evidence ratings describe the general state of research and are not medical advice. Always consult a qualified healthcare provider before making changes to your supplements or medications.