Even going by the description ….. if the problem with Alzheimer’s is the damage is done before you see symptoms, fixing them path to damage can only keep it from getting worse.
Hopefully we’ll eventually see, but I’m in the camp of the only likely cure being prevention. We already know that some lifestyle changes and vaccinations can lower the risk, even if too many of us can’t fix our habits, and our politico-economy prevents us from doing much about environmental risk factors
The trick is early testing to find the condition before symptoms, then perhaps a treatment like this article would be useful