100 Years after the discovery of Alzheimer's disease, neurological diseases and psychiatric disorders represent the largest and fastest growing unmet medical market with 2 billion affected people worldwide. Life expectancy of humans continues to increase, and the world population is aging. Advanced age may lead to deterioration of cognitive functions of the brain. There seems to be consensus that on the background of aging, several factors may render humans prone to dementia. Psychiatric and neurological disorders such as schizophrenia, bipolar disorder or Parkinson's disease may contribute to.