Source selection
Core claims are grounded in public-health agencies, government health institutes, and established clinical organizations. We prefer sources that explain symptoms, red flags, diagnosis, or treatment directly and identify the institution responsible for the guidance.
Writing standard
Each page must answer a distinct reader question. We avoid copying the same generic cause list across color pages. We state what an observation can suggest, what it cannot establish, and which additional symptoms change the recommended next step.
Medical review status
The current guides are evidence-informed educational summaries and have not been individually reviewed by a named clinician. We do not display a medical-review badge or invent an expert author.
Updates and corrections
Pages show an update date and their supporting sources. Guidance is rechecked when an authoritative source changes or when an error is reported. Corrections should preserve the original intent while making the medical boundary clearer.
Commercial policy
Advertising, if introduced, will not determine medical conclusions or source selection. This site does not currently recommend supplements, tests, medicines, or paid treatment providers.