This is unfortunately too common. Abuse prescription drugs? Expect to constantly see ads for those drugs. For some reason ad targeting thinks I have an unpleasant disease or two that I don't.
I've had good luck enabling all the tracking and searching for high-end lifestyle stuff. The prospect of selling luxury goods to the ultra wealthy is jucier to the ad auctions than exploiting a measly few thousand a month for prescription meds, and the ads for that stuff is eye candy anyway.
After kicking it a few times like that, I re-enable the ad blockers.
On a related note, Trump famously targeted the mental illness category with conspiracy theories and libel. It probably won him the presidency.
If I had my way, the entire surveillance capitalism industry would be banned (including targeted ads).