A new study by NYU dental researchers has uncovered evidence that pregnant women with periodontal (gum) disease face an increased risk of developing gestational diabetes even if they don't smoke or drink, a finding that underscores how important it is for all expectant mothers - even those without other risk factors - to maintain good oral health.

The study, led by Dr. Ananda P. Dasanayake, Professor of Epidemiology & Health Promotion at New York University College of Dentistry in collaboration with the Faculty of Dental Sciences at the University of Peradeniya, Sri Lanka, eliminated smoking and alcohol use among a group of 190 pregnant women in the South Asian island nation of Sri Lanka, where a combination of cultural taboos and poverty deter the majority of women from smoking and drinking. The findings support an earlier study led by Dr. Dasanayake that found evidence that pregnant women with periodontal disease are more likely to develop gestational diabetes than pregnant women with healthy gums.

That study, which followed 256 women at New York's Bellevue Hospital Center through their first six months of pregnancy, showed that 22 of the women developed gestational diabetes…