Pregnant women who snored at least three nights per week had a 14.3 percent chance of developing gestational diabetes, compared to a 3.3 percent chance for women who did not snore often.
One theory is that snoring may indicate poor air flow, which could result in less oxygen in a woman's blood.
Gestational diabetes happens when women who don't have diabetes develop high blood sugar levels during pregnancy, leaving them at risk for Type 2 diabetes after giving birth. Researchers recommend that women who experience frequent snoring during pregnancy see a sleep specialist.
The findings were presented at the SLEEP 2009 23rd Annual Meeting of the Associated Professional Sleep Societies.