Some 3% of population is scizophrenic. Also i roughly estimate that around 10-15% of non scizophrenic people will experience delusions some time in their lives due to various causes . . . .
Yep. It should be noted that "schizophrenic" does not mean "insane." It just means a severe and ongoing mental illness.
Also from what I've seen the percentage of people experiencing delusions is closer to 5% of the total population (i.e. 15 million people in the US.)
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Hallucinations and delusions more common than thought
May 27, 2015
University of Queensland
Scientists have found that hearing voices and seeing things (that others cannot) impacts about 5 percent of the general population at some point in their lives.
Hallucinations and delusions in the general population are more common than previously thought.
An international study led by The University of Queensland and Harvard Medical School found that hearing voices and seeing things others cannot impacts about five per cent of the general population at some point in their lives.
Queensland Brain Institute researcher Professor John McGrath said the study, involving more than 31,000 people from 19 countries, was the most comprehensive ever completed.
"We used to think that only people with psychosis heard voices or had delusions, but now we know that otherwise healthy, high-functioning people also report these experiences," Professor McGrath said.
https://www.sciencedaily.com/releases/2015/05/150527124725.htm
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