The current advice from the National Institute for Health & Clinical Excellence is for pregnant women not to drink during the first 3 months and then no more than one or two units a week.
But according to a new study carried out by Bristol University, drinking just one glass of wine a week during pregnancy can significantly reduce a child's IQ. Our Health Correspondent Rebecca Broxton has been finding out the implications.
Researchers from the University of Bristol have published evidence to suggest drinking as little as one glass of wine a week while pregnant could affect the I.Q of the unborn child.
The collaborative study, between the Universities of Bristol and Oxford, showed that only children that have genes that make them vulnerable to alcohol were affected.
12 hundred children in the UK are born with a cleft lip or palate every year. Little is known about what causes it.
To help provide some definitive answers, the world's biggest ever research programme into the condition has been launched, with Bristol experts leading the project.