In pregnant women, higher levels of Veillonella parvula bacteria in the mouth were linked to lower diastolic blood pressure, and showed a similar but less strong pattern for systolic blood pressure.

In pregnant women, the amount of Veillonella dispar bacteria in the mouth wasn't linked to systolic blood pressure, but showed a similar pattern to diastolic blood pressure that wasn't quite statistically significant.

In pregnant women, having more Veillonella bacteria in the mouth was linked to lower blood pressure readings.