Editorial Policy
Last updated August 24, 2026. How we decide what to publish, where it comes from, and how we keep it honest.
How we choose topics
We start from the real questions people ask after a hard diagnosis — what it is, what happens next, how to pay for it, and how to talk to the people around them about it. CADASIL is our flagship focus because it's the disease behind this Foundation's origin story, and because it's under-researched and poorly explained elsewhere.
Where our information comes from
In order of preference, we draw from: peer-reviewed medical literature (including PubMed); established clinical references — NIH, NINDS, and GeneReviews; major clinical bodies such as the American Heart Association; and, last, well-sourced tertiary material when nothing more direct exists. We link to sources directly wherever we can, so you can check our work.
How we grade evidence
Medical claims on this site are labeled by how solid the evidence behind them is — typically Established (well-supported, broad clinical consensus) or Emerging (early, promising, or still being studied). Where a claim is more nuanced — established overall but with one specific piece still evolving — we say so directly next to the claim rather than flattening it into one label.
Review and update cadence
CADASIL is an active area of research, so our content is reviewed on an ongoing basis rather than left static. Each page that carries medical content shows when it was last reviewed. If you notice something that looks out of date, tell us — see "Corrections" below.
Who reviews our medical content
See our Medical Review Boardpage for who reviews this content today and what that review does and doesn't cover. We are honest there about where formal clinical review is still being built out.
How we handle uncertainty and disputed claims
When the evidence is mixed, early, or actively disputed — methylene blue is a good example — we say that plainly instead of picking a side for the sake of a cleaner answer. We'd rather tell you "the evidence doesn't support this yet" than overstate hope we can't back up.
Corrections
If you find an error, email hello@goodyearfoundation.orgwith the page and what looks wrong. We'll look into it and correct anything that doesn't hold up, and we'll update the page's last-reviewed date when we do.
Funding and conflicts of interest
We don't currently accept sponsorships or paid placements for content on this site, and none of our medical or educational content is influenced by a funder. If that ever changes, we'll disclose it here. Some pages point to insurance or financial resources; where a referral relationship exists, we disclose it on that page.
How we use AI
AI tools help us draft, organize, and check content faster — but a human verifies every medical claim against a primary source before it publishes, and AI does not generate medical facts, dosing, or diagnostic guidance on its own. If a claim can't be traced to a real source, it doesn't go on the page.