Dentist as Destiny Part 5:Trying to get pregnant? Check your gums first

The dentist you choose is shaping your destiny (and in this case, your family’s destiny). Here are Parts 1, 2, 3, and 4 if you missed them.

If you’re trying to conceive, before anything else, both of you should get your gums checked.

I know how that sounds. You thought getting pregnant would be about ovulation windows and prenatal vitamins, and here’s a dentist wanting to look in your mouth. Stay with me, because the connection is more direct than almost anyone tells you.

Here’s why I’d start there…

gum disease can add roughly two months to how long it takes to get pregnant. 

When researchers tracked time-to-conception in a large group of women, the ones with gum disease averaged closer to seven months than five—and the lead researcher said the size of that effect was on par with obesity. Two months might  like nothing until you’re the one staring at a single line, cycle after cycle, doing everything right.

So picture two women: same age, same cycle, same everything, except one has healthy gums and the other has a quiet, low-grade gum infection she can’t even feel. 

On average, one of them sees a positive test two months before the other…and the thing that separated them was the one thing nobody in that fertility workup thought to look at.

To understand how a problem in the mouth reaches the uterus, picture your gum line as a security checkpoint. When your gums are healthy, they form a tight seal around each tooth, and just beneath that seal sits a dense bed of blood vessels. 

When the bacteria in your mouth fall out of balance (dysbiotic), the gums get inflamed and the seal breaks down. Think of a leaky gasket, or a hole in a screen door. Now there’s a way in. 

Something as ordinary as brushing can push oral bacteria through the broken seal and into those vessels. That’s called bacteremia. And blood goes everywhere: your heart, your brain, your joints, and yes, the uterus.

In one experiment, researchers put a common gum-disease bacterium, Fusobacterium nucleatum, into the bloodstream of pregnant mice. The bacteria showed up first in the blood vessels of the placenta, crossed the vessel wall, and worked their way into the surrounding tissue and the amniotic fluid, leading to premature delivery and stillbirths. 

That same bacterium has since been recovered from the placentas and amniotic fluid of women who delivered early.

Which is why this doesn’t end at conception. Untreated gum disease in pregnancy is linked to preterm birth, low birth weight, and preeclampsia. Pooling 30 studies, researchers found gum disease was associated with roughly three times the risk. 

And it isn’t only about her gums. For years the research only looked at the mother. It’s finally looking at the father, too, and a 2025 review of nine studies (1,386 men) found that men with gum disease had measurably worse sperm on the measures that matter most: lower motility (how well they swim), more abnormal shape, and more DNA damage. Sperm count was the one place the studies disagreed. But motility, shape, and DNA integrity are exactly what a healthy pregnancy is built on, and all three took a hit. The driver is the same one running through this whole series: inflammation and oxidative stress. Making a baby takes two. So might the dental checkup.

Now, I want to be straight with you about what the science does and doesn’t prove. The association is strong and consistent, and the mechanism has been shown in animals. But no one has yet run the definitive trial proving that treating gum disease shortens time to conception in people. 

What we do know cuts in a specific direction: when researchers treated gum disease during pregnancy in a large randomized trial, the treatment was completely safe, but it didn’t lower the preterm-birth rate. Safe, but likely too late. The signal points to handling this before you conceive, not after the test turns positive.

Which is where the dentist comes in. A whole-body dentist puts a pre-conception cleaning on the list right next to prenatal vitamins, for both partners, and treats any active gum disease before you start trying. A drill-and-fill dentist will never bring it up, because in the old model the mouth and the womb are in different buildings, on different charts, seen by practitioners who never talk to each other. (I went deeper on this in the fertility factor no one talks about.)

So here’s where I’d start:

1. Both of you get a cleaning and a real gum exam before you start trying. Not just her. Ask directly whether you have any active gum disease, and treat it first—that’s the window the research points to.
2. If your gums bleed, don’t wait. Bleeding gums are the leaky-gasket sign that the seal is already failing. It’s the most fixable item on your entire pre-conception list.
3. Keep your cleanings once you’re expecting. Treating gum disease during pregnancy is safe, so don’t skip your dental care while pregnant. Skipping it is the real risk.
4. If your dentist has never connected your mouth to the rest of you, find one who will. My Functional Dentist Directory is a place to start.

None of this replaces your OB or your fertility doctor. But it’s one of the gentlest, most overlooked things you can do for a baby who isn’t here yet, and one of the few items on the whole fertility list that both of you can act on together, starting this week.

Warmly,
Mark

P.S. The gentle, no-harsh-chemicals basics I’d want in the house while you’re trying (and all the way through pregnancy, postpartum and beyond…):

• this toothpaste
• this floss
• this oil-pulling blend in place of mouthwash
• this tongue scraper
• this magnesium 
• these electrolytes