Migraines linked to higher levels of nitrate-modifying bacteria in the mouth and gut, study finds

An American study has found that migraine sufferers have higher levels of oral bacteria that break down nitrates, which could trigger headaches. Researchers from the University of San Diego, USA, have identified a difference in the levels of specific bacteria in the mouth, throat and gut of patients who suffer from migraines. Compared to healthy participants, migraine sufferers were found to have higher levels of the bacteria that convert nitrates into nitric oxide in the blood, which can lead to headaches.

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