Chewing sugar-free gum reduced preterm births in a large study
The idea was inspired by the connection between poor oral health and preterm birth

A woman cradles her baby in Malawi, which has one of the highest rates of preterm births in the world. A new study of around 10,000 Malawi women suggests that chewing a sugar-free gum daily could reduce those numbers.
Lindsay Mgbor/Department for International Development