Thursday, October 1, 2009

Smoking while pregnant makes adolescent offspring psychotic

A study in the British Journal of Psychiatry says using tobacco during pregnancy causes (not just is associated with) pychotic symptoms in kids, such as hallucinations or delusions. This comes from a longitudinal study of 6000 12 year olds in Britain. There was a dose-related response: more smoking led to more symptoms. The researchers think it might be related to impulsivity, attention or cognition. In the study, 19% of the women had smoked during pregnancy.

The same thing happens with alcohol, but only if the mother drank a lot early in pregnancy.

Only a few of the women admitted to using marijuana during pregnancy, but among them there was no association with psychotic symptoms in their kids.

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