The link between Oral Health, IBS & your Brain
I’m fascinated by the microbiome—wherever it exists in the body! Did you know that we also have an oral microbiome that needs just as much care as our gut? I talk a lot about gut health, but your mouth plays a crucial role in your overall health.
Gum disease, also known as periodontal disease, is incredibly common and affects a large portion of the population. It’s an inflammatory condition of the gums and supporting structures of the teeth. Your oral microbiome, the community of bacteria in your mouth, influences inflammation, digestion, and even cognitive function - your brain!
What Causes Gum Disease?
Gum disease is caused by a build-up of plaque, a biofilm of bacteria, viruses, and yeast that forms on the surface of teeth daily. Some bacteria in plaque are beneficial, helping to protect our teeth and gums. However, harmful bacteria can take over if plaque isn’t removed through regular brushing and flossing. Over time, plaque hardens into tartar, which your hygienist needs to remove.
The Oral Microbiome and Gut Health
Your mouth is home to over 700 species of bacteria. Some are beneficial, but others can become problematic if they’re allowed to overgrow. An imbalance in your oral microbiome can lead to issues like cavities, gingivitis, and periodontitis. But it doesn’t stop there—these bacteria can also travel down your digestive tract, disrupting your gut microbiome.
Poor oral hygiene, a high-sugar diet, and certain medications can throw your mouth’s microbial balance out of sync triggering an immune response that affects the entire body.
Studies have linked periodontal disease to gut dysbiosis, inflammatory bowel diseases (IBD), IBS and even rheumatoid arthritis.
Oral Health and Brain Function
There’s also a growing link between oral health and brain health. Research suggests that bacteria from gum infections can enter the brain and may contribute to neurodegenerative diseases like Alzheimer’s. This makes maintaining good oral hygiene crucial for your long-term cognitive health.
There are 9 possible Risk Factors for Gum Disease
Genetics.
Type 2 diabetes: Diabetes can also increase the amount of sugar or glucose in your saliva, which can feed harmful bacteria that combine with food to form plaque.
Smoking.
Pregnancy - Hormonal changes during pregnancy can make your gums more vulnerable to plaque.
A weakened immune system.
A poor diet low in nutrients.
Stress.
Obesity: The link is Inflammation!
Medications that reduce saliva production (leading to dry mouth).
Lifestyle Factors and Gum Disease
Genetics can play a role in gum disease, but lifestyle factors can have a significant impact. Poor oral hygiene, smoking, a poor diet, lack of exercise, stress, and certain medications can all increase the risk of developing gum disease. While we can’t change our genes, we can make choices that support oral and overall health.
The Role of Diet in Oral and Gut Health
What you eat matters for both your mouth and gut microbiome. A diet high in processed foods and sugar promotes harmful bacteria, while whole foods rich in fiber, antioxidants, and healthy fats support beneficial microbes. Fermented foods, leafy greens, and omega-3 fatty acids help to reduce inflammation and maintain a balanced microbiome.
Supplements That May Help
Curcumin: May help prevent periodontal disease by reducing gingival inflammation.
Omega-3s: Support healthy inflammation levels and are linked to a lower risk of gum disease.
CoQ10: May help reduce gingival inflammation.
Antioxidants: Found in fruit, vegetables, and berry concentrates, may help to reduce inflammation and oxidative stress.
5 Top Tips for Better Oral, Gut, and Brain Health
Brush and Floss Daily – Keep harmful bacteria in check with a solid oral hygiene routine.
Eat a Nutrient-Dense, Fiber-Rich Diet – Good gut and oral health start with good nutrition.
Limit Sugar and Processed Foods – Reduce inflammation and prevent bacterial overgrowth.
Include Fermented Foods – Sauerkraut, kefir, and yogurt support both oral and gut microbiomes.
Stay Hydrated – Water helps wash away harmful bacteria and supports digestion.
Bonus Tips for a Healthier Mouth and Microbiome
Focus on good gut health—take a quality probiotic and eat fermented foods.
Avoid smoking and vaping, which harm both your oral and gut microbiomes.
Swap your antibacterial mouthwash for a probiotic mouth rinse.
https://invivohealthcare.com/products/therapeutics/bio-me-oral-60g/
Consider switching to hydroxyapatite toothpaste for tooth remineralisation (speak with your dentist about this!).
Your mouth is the gateway to your gut and brain health. By making small changes to your oral care and diet, you can support a thriving microbiome that benefits your entire body.
Need more information?
Book a free 30-minute discovery call with me
Jackie x
