“Diet, often considered as a lifestyle factor, ” as an editorial in the journal Nutrients once put it,
contributes to the development of many chronic conditions including obesity, cardiovascular disease, hypertension, stroke, type 2 diabetes, metabolic syndrome, some cancers, and perhaps some neurological diseases.
Interestingly, every one of those conditions has also been scientifically linked with gum disease. Each one – including gum disease – is marked by chronic inflammation. So if improving your diet can improve inflammatory conditions such as heart disease and diabetes, shouldn’t it help with gum disease, too?
We’ve explored this question before. We’ve looked at studies that showed how shifting from refined carbs to nutrient-dense foods may reverse gum disease; others that highlighted the importance of specific micronutrients and fiber for gum health. We’ve seen one systematic review on the impact of carbohydrate restriction on periodontal health.
Findings such as those are confirmed by a new systematic review in Evidence-Based Dentistry.
Its authors sifted through more than 1200 studies before homing in on 9 high quality investigations that met their strict criteria for study design, duration, and participants. They specifically sought studies that tracked changes in both diet and gum health over time, with at least 20 participants each and clear methods for measuring periodontal health.
Eight of those nine studies found that gum health improved with a shift to diet that was high in nutrition and fiber but low in carbs and saturated fats.
Sound familiar? These are the same principles that benefit heart disease, diabetes, and other inflammatory conditions.
Some of the improvements were quite dramatic.
Woelber et al., reported a 40% reduction in gingival bleeding, in patients adopting a, ‘low inflammatory diet,’ which Woelber claims to be comparable to adding interdental cleaning to a patient’s oral hygiene regime. Bartha et al., reported an 11% reduction in [bleeding on probing], a finding similar to the improvement in oral health in subjects using electric toothbrushes compared to manual toothbrushes over a three month period. Both accounted for differences in oral hygiene by suspending all interdental cleaning during the trial and accounted for baseline dietary differences by selecting participants practicing a ‘Western Diet’.
Diet was the difference-maker.
Yet other studies found that the shift to an anti-inflammatory diet meant shallower periodontal pockets, better attachment of the gums to the teeth, and less gum inflammation overall.
The combined evidence suggests that adopting a diet associated with improved outcomes for chronic systemic diseases with an inflammatory component, such as heart disease, obesity or diabetes, may positively impact periodontal parameters in patients with gingivitis or periodontitis, particularly in the older population but the effects may be negated by confounding factors such as smoking.
The studies consistently highlighted foods associated with better gum health, including nuts and seeds, berries and other fruits, vegetables (especially leafy greens), whole grains, healthy oils like olive oil, and fish rich in omega-3 fatty acids.
The foods linked to worse gum health were the usual suspects: the sugars and other highly refined carbohydrates that dominate ultra-processed foods, along with other generally nutrient-poor options.
What’s particularly compelling about this latest review is how it connects oral health to overall wellness. The same dietary patterns that help keep your gums healthy also support heart health, help manage diabetes, lower the risk of certain cancers, support healthy aging, and promote better cognitive function.
It’s all connected. Your mouth isn’t separate from the rest of your body – it’s an integral part of your overall health system.
