Explore cardiovascular risks associated with long term use of mouthwashes

Mouthwash is often seen as a quick fix for fresh breath, but turning it into a long-term habit may have unexpected effects on cardiovascular health.

Dr Kunal Sood, an anaesthesiologist and interventional pain medicine physician, recently highlighted how antibacterial formulations can disrupt systemic functions.

In an Instagram video, he explained that beneficial oral bacteria convert dietary nitrates into nitrites, which eventually become nitric oxide.

"Nitric oxide is essential for vasodilation, blood flow, and blood pressure regulation," he noted.

Antibacterial mouthwash disrupts this pathway

Strong antiseptic mouthwashes, particularly those containing chlorhexidine, can wipe out the very bacteria responsible for this conversion.

When these nitrate-reducing microbes are killed, nitric oxide availability drops, potentially impairing blood vessel function. To understand the physiologic impact, consider these research findings:

• Certain mouthwashes can reduce beneficial oral bacteria by more than 90 percent.
• Short-term use of just three days can significantly lower salivary nitrite levels.
• This reduction can lead to a measurable increase in systolic blood pressure.
• Frequent use, exceeding twice daily, is linked to a higher risk of hypertension.

Long-term associations exist

Dr Sood stressed that while the effect is modest for most, it becomes clinically significant with recurrent use of strong formulations.

Microbiome studies confirm that shifts in oral bacteria lead to reduced nitric oxide signalling, which results in less vasodilation. However, the physician clarified that mouthwash still has appropriate clinical uses.

"Mouthwash still has appropriate uses for gum disease, post-procedure care, and high plaque burden," he concluded.

By maintaining a balanced approach to oral hygiene, individuals can protect their dental health without inadvertently compromising their long-term cardiovascular stability.

Please Note: This information is for educational purposes only and does not count as professional advice. Readers should always consult a qualified doctor regarding any questions about their health or a medical condition.