I love a good Napa cab as much as anyone. But here’s what we know about alcohol and your mouth: the news isn’t great. The good news? Today I’m sharing a science-backed protocol to minimize the damage.
Between holiday parties, toasts, and late-night gatherings, December means more alcohol exposure for most people.
Here’s what happens to your oral microbiome when you drink—and what to do about it.
Alcohol Changes Your Oral Microbiome
Large-scale research shows a clear pattern: alcohol consumption is associated with shifts in the oral microbiome.
In a study of 1,044 US adults, researchers found that drinkers had reduced levels of beneficial bacteria—specifically, a group called Lactobacillales decreased with higher alcohol consumption. Heavy drinkers showed an 11% reduction compared to non-drinkers.
The mechanism makes sense: alcohol is antibacterial. That’s why hand sanitizer works, after all. When alcohol passes through your mouth, it doesn’t discriminate between “good” and “bad” bacteria.
What happens next? Research on people recovering from alcohol use disorder shows that oral microbiome composition begins shifting within days of stopping drinking, with continued changes over several weeks.
Your oral bacteria are dynamic and responsive—damage isn’t permanent, but it’s also not a quick thing to repair.
The Blood Pressure Connection: A Concerning Pattern
Here’s where the oral microbiome story gets systemic…
Your tongue hosts bacteria that perform a crucial job: they convert nitrates from your diet (think: leafy greens, spinach, beets) into nitrites.
Those nitrites eventually become nitric oxide—a molecule that helps keep your blood vessels relaxed and your blood pressure healthy.
The research is clear on one thing: Kill these bacteria, and you disrupt nitric oxide production.
In a carefully controlled study of 19 healthy volunteers, using an antibacterial mouthwash for just 7 days caused:
90% reduction in oral nitrite production25% reduction in plasma nitrite levelsBlood pressure increases of 2-3.5 mmHg
Another study following 540 people over three years found that those who used antibacterial mouthwash twice daily had an 85% higher risk of developing hypertension compared to non-users.
We know alcohol is antibacterial. We know it alters the oral microbiome. We know from the mouthwash studies what happens when you kill oral bacteria. The logical concern: regular alcohol consumption likely disrupts the same nitric oxide pathway.
Recent research supports this: a study found that after using alcohol-based mouthwash, Actinobacteria—crucial contributors to blood pressure regulation—decreased significantly.
Why December Matters
My concern isn’t so much one glass of wine at dinner. It’s about frequency without recovery…
Multiple parties per weekLate nights disrupting circadian rhythm (which affects saliva production)Sugar-laden cocktails feeding opportunistic bacteriaDehydration from alcohol reducing saliva (your mouth’s natural defense)
Your microbiome can bounce back from one exposure, but multiple hits per week without recovery time is what causes lasting disruption. This is the same mechanism that makes twice-daily antibacterial mouthwash problematic—it’s the relentless exposure without allowing your beneficial bacteria to repopulate.
It’s the combination and frequency that creates the problem.
THE PROTOCOL: Realistic Damage Control
This isn’t about abstaining. This is about being strategic.
BEFORE the Party:
1. Hydrate heavily – Start the event well-hydrated
2. Eat something substantial – Don’t drink on an empty stomach
3. Consider oral probiotics like these – Support your baseline microbiome
DURING the Party:
1. Water between drinks – THE most important intervention
2. Avoid sugary mixers when possible – Less fuel for bad bacteria
3. Ditch the crackers – enjoy the cheese and meat from the charcuterie board instead
4. Don’t brush right after drinking – Alcohol softens enamel; brushing causes damage
NEXT MORNING:
1. Scrape your tongue thoroughly – Remove bacterial buildup and metabolic waste
2. Rinse with water or xylitol – NOT antibacterial mouthwash (makes it worse!)
3. Use nano-hydroxyapatite toothpaste – Supports remineralization
4. Take an oral probiotic – Help repopulate beneficial bacteria
5. Eat nitrate-rich foods – Leafy greens, beets to feed the good bacteria (or pop a Fygg Functional Mint for a nitrate boost—it’s like a salad in your pocket!)
WHAT NOT TO DO:
- ❌ Don’t use antibacterial mouthwash (you’re kicking your microbiome while it’s down)
- ❌ Don’t brush immediately after drinking
- ❌ Don’t panic and over-clean
Look, I’m not going to tell you to skip the holiday parties or turn down that glass of wine. Living well includes celebrating with people you care about.
But here’s the thing: your oral health isn’t just about cavities and gum disease anymore. We’re learning that the bacteria in your mouth influence your blood pressure, your cardiovascular health, your systemic inflammation.
One party won’t destroy your microbiome. But three weeks of consecutive parties without a recovery protocol? That’s different.
Think of this like going to the gym: you can’t out-exercise a terrible diet, but you also don’t need to be perfect. You just need to be consistent with the basics—hydration, tongue scraping, the right products, and giving your microbiome time to recover between hits.
P.S. No protocol can replace having a dentist who understands the mouth-body connection.
If your dentist isn’t asking about your sleep, diet, breathing, or gut health—you’re missing the bigger picture.
Mouth breathing, tongue posture, and airway issues aren’t “dental problems”. they’re systemic health problems that show up in your mouth first.
→ Find a functional dentist near you
→ Find an airway dentist near you
→ Find a myofunctional therapist near you