Schizophrenia May Increase Dementia Risk By 2.5 Times

People with psychotic disorders, such as schizophrenia, are 2.5 times more likely than those without a psychotic disorder to eventually develop dementia. According to a meta-analysis of 11 studies, the association between psychotic disorders and dementia was stronger among those whose psychotic disorder started under age 40, or between ages 40 through 60. However, the association was also present among those whose psychotic disorder or delusions started after age 60.

Evidence from three studies also found that people with psychotic disorders tended to be younger at dementia diagnosis than those without a psychotic disorder. Several studies also indicated . . .