Bleeding gums are a vital sign

The dentist you choose today will show up in your heart, your brain, and your gut decades from now.

Picture two people. Same age, same genes, same diet.

Years ago, one chose a dentist who treats the mouth as part of the whole body. The other chose a perfectly fine drill-and-fill dentist covered by insurance.

Over the next eight weeks, I want to follow these two people and their health trajectory, one organ at a time. We’ll start with your heart: the last place you’d expect a dentist to look.

When I began telling patients their gums had something to do with their heart, some colleagues told me to stay in my lane. 

To the medical world, your mouth and your heart belong to different doctors, in different buildings, on different insurance cards. To your body, they’re one system.

What turned me into a believer was a study back in 1989. People who’d just had a heart attack had measurably worse dental health than people who hadn’t, even after you set aside smoking, cholesterol, and the usual suspects. I read it and never thought about heart health the same way for my own patients.

The evidence has only grown. Late last year the American Heart Association pulled a decade of research into a formal statement linking gum disease to heart disease. 

When your gums get inflamed, the tight little seal between gum and tooth starts to leak. Bacteria that are supposed to stay in your mouth get into your bloodstream. Researchers keep finding those same mouth bacteria living inside the plaque in people’s arteries.

So a low, steady fire in your gums keeps your whole body a little inflamed and inflammation is exactly what stiffens and clogs arteries over the years.

Now think back to our two people…

The drill-and-fill dentist fills the cavity, caps the cracked molar, and never connects the gums bleeding a bit more each year to the patient’s heart health.

The whole-body dentist treats bleeding gums as the early warning they are — and the best ones flag it to your doctor. 

Your cardiologist and your dentist have probably never said a word to each other about you, even though they’re working the same problem from opposite ends.

So what do you actually do?

1. Find out where you stand. At your next cleaning, ask straight out: “are my gums bleeding when you check, and how deep are my pockets?” (Pockets are the little gaps where gum meets tooth.) Bleeding is the earliest sign of inflammation, and at that stage it’s reversible. Write the numbers down — year to year, you want them holding steady, not creeping deeper.
2. Clean between your teeth every single day. Gum disease starts in the spots a toothbrush can’t reach, so this is the move that actually reverses early inflammation: floss, an electric flosser, a water flosser, or little interdental brushes. Brushing alone won’t get there.
3. Protect the bacteria that lower your blood pressure. The bacteria on your tongue turn the nitrate in leafy greens and beets into nitric oxide—the molecule that relaxes your arteries and helps keep your blood pressure down. Antiseptic mouthwash wipes them out; in studies, a week of it nudged people’s blood pressure up a few points. So skip the harsh rinse (here’s what I rinse with instead) and eat your greens.
4. Eat to protect your gums. Ease off the sugar and refined carbs that feed the bacteria inflaming your gums, and lean toward the anti-inflammatory side: leafy greens, omega-3s, vitamin C, green tea.
5. And if you already have gum disease, get it treated. This is the big one. That usually means a deep cleaning below the gumline (what dentists call scaling and root planing) not the regular polish. It’s been shown to lower inflammation markers in your blood like CRP, and in some studies to improve how well your arteries open and flex.

Bleeding gums are a vital sign, like taking your temperature or your blood pressure.

Next week: they keep finding gum-disease bacteria inside the brains of Alzheimer’s patients. I’ll tell you what that means — and why I read that one as a son, not a dentist.

Take care of that heart and I’ll see you next week in Part 2,

Dr. B

P.S. A few things I rely on to support my gums and heart health: this magnesium, this rinse instead of mouthwash, this gum defense supplement, this green tea, and this toothpaste every day.

Further Reading & Citations

Mattila KJ, et al. “Association between dental health and acute myocardial infarction.” BMJ. 1989;298(6676):779–781. doi:10.1136/bmj.298.6676.779: The Finnish study that opened the field: heart-attack patients had measurably worse dental health, even after accounting for smoking, cholesterol, and diabetes. SciSpacePubMed

Tran AH, et al. “Periodontal Disease and Atherosclerotic Cardiovascular Disease: A Scientific Statement From the American Heart Association.” Circulation. 2026;153(6):e73–e88. doi:10.1161/CIR.0000000000001390: The American Heart Association’s current consensus, updating its 2012 statement. PubMedAHA Journals

Kozarov EV, et al. “Human atherosclerotic plaque contains viable invasive Actinobacillus actinomycetemcomitans and Porphyromonas gingivalis.” Arterioscler Thromb Vasc Biol. 2005;25(3):e17–e18. doi:10.1161/01.ATV.0000155018.67835.1a Found live mouth bacteria inside arterial plaque, not just their DNA. AHA Journals

Tonetti MS, et al. “Treatment of periodontitis and endothelial function.” N Engl J Med. 2007;356(9):911–920. doi:10.1056/NEJMoa063186: Treating gum disease improved how well arteries open and flex, and lowered CRP. OvidJVASCURG

Kapil V, et al. “Physiological role for nitrate-reducing oral bacteria in blood pressure control.” Free Radic Biol Med. 2013;55:93–100. doi:10.1016/j.freeradbiomed.2012.11.013 A week of antiseptic mouthwash raised blood pressure by wiping out the mouth’s nitric-oxide bacteria. PubMed Central

Why Your Cardiologist Should Talk to Your Dentist: askthedentist.com/why-your-cardiologist-should-talk-to-your-dentist

Skip the Rinse, Save Your Heart: askthedentist.com/skip-the-rinse-save-your-heart

Nitric Oxide and Oral Health: askthedentist.com/nitric-oxide-oral-health

Gum Disease: Stages, Prevention, and Treatment: askthedentist.com/gum-disease-stages-prevention-treatment

Ask the Dentist podcast: “Stop Using Mouthwash!“