Children born to mothers who take heartburn medication during pregnancy may have a greater risk of developing asthma, research suggests.
Those whose mothers had been prescribed medicines to treat acid reflux during pregnancy were more likely to be treated for asthma in childhood, a review of studies found.
However, experts say the potential link -- which came to light by reviewing studies that had examined health records -- is not conclusive.
They say that the association could be caused by a separate, linked factor and that further research is needed to determine whether the medicines affect the health of children.
Mothers-to-be should follow existing guidelines -- to use the medicines as required -- and consult with a doctor or nurse if symptoms persist, they recommend.
Heartburn is caused by stomach acid passing from the stomach back into the esophagus -- the tube that connects the stomach to the throat. The condition is very common in pregnancy because of hormonal changes and pressure on the stomach from the growing womb.
