Your vision starts to blur. You see flashing lights. You feel that familiar throbbing pain in your head grow stronger and stronger.
About 12% of Americans experience these migraines, and a new study suggests they could be blamed on the bacteria living in their mouths.
People who get migraines have a higher abundance of mouth bacteria that reduce compounds called nitratesinto nitrites, which can be converted into nitric oxide, according to the study published Tuesday in the American Society for Microbiology's open-access journal mSystems.
