For decades, women have been told that drinking any amount of alcohol during pregnancy can harm their developing child. The zero-alcohol rule is so ingrained that just walking into a bar while pregnant can draw suspicious stares.
But new data from Denmark suggest that light to moderate drinking early in pregnancy — up to eight drinks a week — has no effect on intelligence, attention or self-control in children at age 5. Drinking more heavily, however, was associated with measurable negative effects.
However, children of heavy-drinking women who had nine or more drinks a week had reduced attention span and were nearly five times more likely to have low IQ than children of nondrinkers.
Read more from Time.