Cardiac Surgeon Warns Against Common Mouthwash Use

A heart surgeon has shared his reasons for steering clear of a typical bathroom product due to potential health concerns.

We often rely on various products in our daily routines—think toothpaste, deodorant, and dental floss. However, one doctor highlights a particular item that poses significant risks, which is why he chooses not to use it.

Dr. Jeremy London, a cardiothoracic surgeon with over 25 years of experience, frequently shares insights on social media about heart health and preventive measures. Recently, he advised against using something many of us consider essential for oral hygiene.

In a recent video on his YouTube channel, Dr. London said, “Stop using mouthwash. This is one thing that I absolutely avoid as a cardiac surgeon.” He elaborated on two main points.

“The first reason is that, like the rest of your digestive system, your mouth contains beneficial bacteria. Killing that bacteria disrupts the natural environment,” he explained. “Secondly, there’s an interesting chemical reaction involving that healthy bacteria that helps regulate your blood pressure.” He added, “By destroying it through mouthwash, you might actually contribute to high blood pressure, which is a known risk for heart attacks and strokes.”

This isn’t the first time Dr. London has raised concerns about mouthwash; he’s mentioned “unequivocal evidence” indicating that it can elevate blood pressure by eliminating oral bacteria. He cautions, especially if you’re prone to high blood pressure, this can have worse outcomes.

Research supports the link between a balanced oral microbiome and better cardiovascular health. A study showed that chlorhexidine, a common mouthwash ingredient, can kill off nitric oxide-producing bacteria that are crucial for maintaining blood pressure.

Nathan Bryan from Baylor College of Medicine reported that regular use of mouthwash led to increased blood pressure within a week. He noted that the presence of these bacteria plays an important role in maintaining normal blood pressure, opening new avenues for managing hypertension.

“Many of the medications currently in use for managing high blood pressure do not address these nitric oxide-producing bacteria,” Bryan pointed out. He further remarked, “Over 200 million Americans start their day with an antiseptic mouthwash, which destroys beneficial bacteria needed for nitric oxide production. What we once considered good hygiene may actually be detrimental.”