There are several factors to consider. First, infected teeth are legendary causes of trouble and even death. (My wife is a former dental hygienist and I have absorbed a lot over the years.) This is particularly true if the tooth is an upper due to the honey-combed bone allowing possible access directly to the brain. These can be asymptomatic if an outlet is found since the pressure does not build up and tip you off yet toxins are going into your system for years.

The toxins produced by growing bacteria are called exotoxins and can be deadly. The immune system attacks the bacteria and the toxins decrease. But there is another kind of toxin called endotoxins that are released only as the bacteria dies. A sort of "poison pill" defense. When these toxinsmake it into the brain they trigger a special branch of the immune system called the microglia. These mop up the mess in a normal person and all is well.

However, in a PWP it doesn't end there. In fact, a single exposure to endotoxin sets off a melee that continues for months and neurons are killed in the crossfire. Furthermore, all that chemical soup has neuroactive powers and screws up the brain chemistry, which is probably what Ron encountered. Hopefully, he is backon the curcumin because it is one of the things that stops the process.

For more mind-numbing detail:
http://www.parkinsonsonline.org/4.02...he_CNS.mm.html