02/22/2026
Eating a more Mediterranean type diet with lots of tomatoes could help in multiple ways!!! Don’t forget the mushrooms and bitter spices!
Chronic periodontal disease is strongly associated with systemic inflammation and has been linked in cohort and mechanistic studies to increased risk of cardiovascular disease, type 2 diabetes, adverse pregnancy outcomes, rheumatoid arthritis, and even cognitive decline, largely via pathways involving bacterial translocation (such as for Porphyromonas gingivalis), endotoxaemia, endothelial dysfunction, and heightened cytokine signalling.
A large cross-sectional analysis of 1,227 US adults aged 65 to 79 used NHANES (National Health and Nutrition Examination Survey) 2009 to 2014 data to explore whether dietary lycopene intake was associated with severe periodontitis (PD).
Lycopene intake was derived from two 24-hour dietary recalls and categorised as sufficient (≥ 8 mg/day) or insufficient. Periodontal status was assessed by standardised examination in NHANES mobile examination centres. Survey-weighted multinomial logistic regression models adjusted for age, s*x, race, smoking status, education and BMI.
Overall, 77.9% of participants had insufficient lycopene intake and 5.6% had severe PD. After adjustment, sufficient lycopene intake was associated with markedly lower odds of severe PD (odds ratio, OR 0.33). Current smoking showed the expected strong association (OR 3.29) and the association between sufficient lycopene intake and severe PD was strongest in non-Hispanic White participants (OR 0.13) and not statistically significant in non-Hispanic Black participants.
The magnitude of these associations is large for a single dietary component and therefore warrants careful interpretation. The principal limitation is the cross-sectional design: exposure and outcome were measured at the same time, so temporality and causality cannot be established. Reverse causation is plausible, as individuals diagnosed with periodontal disease may have altered their diets. Lycopene intake was based on two-day recall rather than biomarker measurement, and the ≥ 8 mg cutoff was derived from other disease contexts rather than periodontal outcomes. Critically, the models did not adjust for overall dietary pattern (such as fruit/vegetable intake, Healthy Eating Index, fibre, total carotenoids), dental care access, oral hygiene behaviours, or detailed socioeconomic factors. Given that lycopene intake typically tracks with higher diet quality and healthier lifestyles, substantial residual confounding is likely.
Taken together, this study provides a statistically robust association between higher reported lycopene intake and lower prevalence of severe PD in older adults, but it is best interpreted as hypothesis-generating. The large effect size suggests that lycopene may function partly as a marker of a phytonutrient-rich, Mediterranean-style dietary pattern rather than acting as an isolated causal agent. Biological plausibility exist, lycopene has antioxidant and anti-inflammatory properties, but the magnitude observed here likely overestimates any true independent effect. Clinically, the findings support encouraging whole-food, carotenoid-rich diets in older adults; however, they do not justify lycopene supplementation as a stand-alone periodontal intervention without new longitudinal or randomised trial evidence.
This is a well-executed analysis using nationally representative data and appropriate complex-survey statistics, but it remains observational and does not establish causality. However, the large effect size suggests a real association, at least with a phytonutrient rich diet.
For more information see: https://scitechdaily.com/could-a-tomato-nutrient-help-prevent-severe-gum-disease-in-older-adults/
https://pubmed.ncbi.nlm.nih.gov/41391269/