Is mouthwash bad for the heart? Here’s what the research actually says

By Joanna L'Heureux, Postdoctoral Researcher, Public Health and Sport Sciences, University of Exeter

Social media videos are claiming that mouthwash can raise risk of blood pressure – and potentially damage heart health.

According to some of these videos, this is caused by mouthwash wiping out “good” oral bacteria that are important for the cardiovascular system. While it’s a striking message, don’t throw your mouthwash away just yet. The reality is far more complex.

Our mouths contain a wide variety of bacteria. Together,…

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