Article: Barbiturates seen to lower intelligence

A new warning to pregnant women: Taking phenobarbital, a barbiturate, can lower your baby's intelligence.

A study of 114 adult men found that those whose mothers took the drug during pregnancy had significantly lower verbal intelligence scores than those whose mothers had not. There was no significant difference between the groups in scores measuring general intelligence or perceptual organization.

Phenobarbital has been prescribed to treat hypertension related to pregnancy and other medical problems, but it has also been abused. Between 1960 and the late 1970s, more than 22 million children were born in this country to women who took prescribed barbiturates during pregnancy.

The ...

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