At issue: is household crowding a risk factor for schizophrenia and bipolar disorder?
Five studies have reported that being born or raised in an urban area is a risk factor for developing psychosis later in life. The authors hypothesize that increased exposure to infectious agents through household crowding might account for this association.
Stanley Foundation Research Programs, Bethesda, MD 20814, USA.
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Torrey
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Yolken
D001714:Bipolar Disorder / Q000453:epidemiology* / Q000209:etiology; D003441:Crowding / Q000523:psychology; D004781:Environmental Exposure / Q000009:adverse effects; D006801:Humans; D007239:Infections / Q000150:complications / Q000635:transmission; D012111:Residence Characteristics / Q000706:statistics & numerical data; D012307:Risk Factors; D012559:Schizophrenia / Q000453:epidemiology* / Q000209:etiology; D014504:Urban Health / Q000706:statistics & numerical data*