When a Cocaine addict sniffs up cocaine, he obviously does it to feel pleasure. It is also addictive. Many children in schools put nail polish remover on a cloth or Kleenex and hide it up their sleeves to take a whiff of when they want to get that "high" feelling. Stress and environmental chemicals are causes of weakening of the immune system, but the brain can be directly attacked in other ways too.

I only ask because you have made this point several times in the past and was wondering if this post was made because of a response I made on another thread. This disease makes me paranoid and I apoligize if I misunderstood your reason for posting.