A new pilot study suggests that a fasting-mimicking diet may help calm inflammation linked to gum disease. Researchers at King's College London found that people with periodontitis who completed three five-day calorie-restricted cycles over six months showed lower inflammation markers in blood and gum-fluid samples.
The trial involved 28 patients in Spain. One group followed standard dental care, while the other added a structured diet plan that limited intake to 1,100 calories for two days and 750 calories for three days, before gradually returning to normal eating. The study focused on whether diet could support gum health rather than replace professional treatment.
What Changed in the Body
After six months, the diet group showed reduced levels of CRP and other molecules associated with inflammation, including markers linked more directly to gum tissue. Gingival crevicular fluid, the liquid found between the tooth and gum, also reflected these lower inflammatory signals.
Still, the researchers did not observe a clear improvement in clinical periodontitis scores compared with standard care alone. That means the biological response looked promising, but the visible severity of gum disease did not change in a measurable way during this small trial.
Why It Matters
Scientists believe the effect may be connected to lower oxidative stress, reduced intake of refined carbohydrates, and possible shifts in the oral microbiome. The team says larger studies are needed to confirm whether these changes can translate into practical benefits for more patients.
For now, the message remains clear: brushing, plaque control, and dental cleanings are still the foundation of oral care. Diet may one day become a useful companion to that routine, especially if future research identifies who is most likely to benefit. The findings were published in the Journal of Clinical Periodontology. This line of research could help shape more personalized dental care in the years ahead.