Introduction

Brushing your teeth isn’t just about preventing cavities and bad breath—it may have a direct impact on your heart health. Recent research shows that skipping bedtime brushing significantly increases the risk of cardiovascular events and even death. Understanding this connection highlights how simple daily habits can have far-reaching health benefits.

Key Findings from the Study

A major study of over 1,500 hospitalized adults examined oral hygiene habits and heart outcomes.

Individuals who skipped brushing at night—or didn’t brush at all—faced much higher risks of heart disease, stroke, and death compared to those who brushed before bed.

Brushing only in the morning showed worse outcomes than brushing at night.

Nighttime brushing alone was linked to the best survival rates, with hazard ratios around 0.55–0.59—nearly a 45% lower risk versus non-brushers.

Smoking compounded the risks, particularly for those who skipped brushing at night.

The Science Behind It

Oral bacteria: When you sleep without brushing, harmful microbes multiply in your mouth.

Systemic inflammation: These bacteria can enter the bloodstream, triggering inflammation throughout the body—a known contributor to cardiovascular disease.

Protective effect: Brushing before bed clears bacteria, reducing inflammation and supporting heart health.

Tips for Heart-Healthy Oral Hygiene