Disavow Over-Sweep on a Medical YMYL Site — Surgical Rollback
Bree Sharp
A medical YMYL client lost rankings after running a disavow file in response to a negative SEO attack. The working assumption was that toxic links were still doing damage. The actual cause was the disavow itself: legitimate, equity-bearing links had been swept into the file alongside the genuinely harmful ones, neutralizing the site's own link equity.
I cross-referenced the disavow file against the site's pre-drop link profile. Toxic and legitimate links can look similar in a raw export — similar anchor text patterns, similar domain types, similar acquisition timelines — so without a methodical pre/post comparison, good links easily get caught in the sweep. The over-disavowed legit domains were isolated and removed from the file; genuinely harmful domains stayed flagged. A concurrent crawl and indexing audit ran in parallel to rule out compounding technical issues (coverage gaps, canonicalization, crawl budget).
Stack: Google Search Console, Ahrefs, link profile delta analysis, disavow file diff, crawl/index audit, Python for cross-referencing exports.
Outcome: Rankings recovered after the surgical rollback. The diagnostic value was in the pre/post comparison — treating the disavow file as a precision instrument, not a net.
Tags: Technical SEO, disavow audit, link profile, YMYL, GSC, Ahrefs, link equity recovery
Like this project
Posted May 10, 2026
YMYL site lost rankings to its own disavow — legit links swept with toxic ones. Pre/post diff isolated the over-sweep. Surgical rollback. Rankings recovered.
