Yeah, but THC is only ONE of the cannabinoids in marijuana, and may not be the active agent for this particular purpose. "Hash brownies" are probably the better course at this time,or powdered m.j. mixed with water and swallowed.
The fact that it actively removes the amyloid is wonderful news, as that can mean an actual curative, rather than a preventative (which would also be good).
I confess to a vested interest, in that my great-grandmother had severe dementia (great health otherwise, as she lived to a very ripe old age, dying when I was around four).
But great news either way.