09/25/2026
Researchers followed 540 adults for three years. None of them had high blood pressure at the start.
The ones who used mouthwash twice a day or more were 85% more likely to develop high blood pressure than people who used it less often. The researchers adjusted for age, smoking, waist size, exercise, and alcohol. The link held.
The assumption is simple: mouthwash kills germs, so it keeps you healthier. The data points somewhere else.
Your mouth is home to bacteria that do a job almost nobody talks about. When you eat nitrate-rich vegetables like leafy greens and beets, those bacteria start the conversion that produces nitric oxide. Nitric oxide relaxes your blood vessels and helps keep your blood pressure in check.
Antiseptic mouthwash does not pick and choose. It wipes out those bacteria along with the ones behind bad breath.
The short-term studies point the same way. In one, just seven days of antibacterial mouthwash blunted that conversion and raised blood pressure in people already being treated for hypertension.
So the habit that feels like the healthiest part of your morning may be working against the number your doctor checks at every visit.
I have been working with patients for over 34 years, and the everyday exposures are the ones nobody asks about. Mouthwash is one of three products I break down in my latest article, along with what to do instead. The other two are probably in your kitchen right now.
Here's the full breakdown: mouthwash, nonstick pans, tap water, and how to lower your toxic load. https://drbobrakowski.com/posts/toxic-load-everyday-products/?utm_source=facebook&utm_medium=social&utm_campaign=toxic-load-everyday-products