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Drinking a low or moderate level of alcohol in early pregnancy is not linked to developmental problems in five-years-olds, researchers say.
The Danish research, published in the BJOG journal, suggested one to eight drinks a week was not linked to harm.
In Denmark a standard drink has 12g of alcohol, compared with the UK's 7.9g.
UK pregnant women are advised not to drink, but experts say those who do should have no more than one-to-two units, once or twice a week.
Heavy drinking during pregnancy is known to be linked to miscarriage, foetal alcohol syndrome and low birth weight.
Binge drinking
The Danish researchers produced five papers on drinking in pregnancy.
Over 1,600 pregnant women took part, recruited at their first antenatal visit. Half were first-time mothers, and just under a third smoked during pregnancy.
They were asked about their alcohol intake.
Low average consumption was defined as one-to-four per week, moderate as five-to-eight drinks and high levels as nine or more per week.
Binge drinking, which women were also questioned about, was defined as having five or more drinks on one occasion. Pregnant women who did not drink during pregnancy were included in the research.
