A popular hormone treatment given to pregnant women to stop them having their babies too early does not work and is a waste of time, a new study has found.
A study of 789 women in New Zealand, Australia, Canada found giving progesterone pessaries to women with a history of pre-term birth made no difference compared to the ones who did not use them.
Lead researcher Professor Caroline Crowther, from Auckland University's Liggins Institute, said there had previously been mixed studies about whether the use of vaginal progesterone reduced preterm birth, Because there was no definitive answer, treatments given to women with a history of having premature babies varied widely among hospitals and countries, she said.
Progesterone pessaries can be prescribed to woman who have given birth before 37 weeks as there was evidence that it could delay birth and therefore the prevent the risks associated with a premature baby such as breathing problems or other serious health issues.