Given how popular the benzos are among the mental health professionals, I wonder if the recent epidemic of various dementias including AD is at least partially due to overusing those drugs. For those that do need an anti-anxiety drug, niacinamide works just like a benzo but protects against (and maybe even reverses) Alzheimers. There is a clinical trial going on with 3g niacinamide daily for AD patients.
http://www.bbc.com/news/health-29127726
http://clinicaltrials.gov/show/NCT00580931
http://www.bbc.com/news/health-29127726
http://clinicaltrials.gov/show/NCT00580931