Changes in the use of intoxicants after onset of pregnancy.

A sample of 416 pregnant women were interviewed with emphasis on their use of alcohol, tobacco, and legally prescribed and illegal drugs before and after onset of pregnancy. The results indicate a significant reduction in alcohol consumption, tobacco smoking and the use of legally prescribed and illegal drugs in connection with the pregnancy. There was no correlation between socio-economic level and use of intoxicants. There was a correlation, however, between the use of intoxicants by the pregnant women and the use of such substances by other significant persons in their environment.