More pseudo science . . .
Well, it does get into the human brain where it will always stay alive, but is kept inactive by our immune system. It also resides in our muscles, where it is less of a concern.
You should read the studies on what it does do to rats. It does provably alter their behavior. It's not too much of a stretch to imagine it could do something to us.
It does ravage our bodies once our immune system is down. People with AIDS have real problems.