Researchers have uncovered a striking link between the amount of lycopene older Americans eat and their risk of developing severe periodontitis. The analysis, which focused on adults aged 65‑79, revealed that those who fall short of recommended lycopene levels are far more likely to suffer from advanced gum disease. The study appeared in The Journal of Nutrition, Health and Aging.
The investigation was spearheaded by Katherine Kwong of Connecticut College, working alongside colleagues from Tulane, UC San Diego, Yunnan University, Southern Illinois University and LSU Health Sciences Center.
National Survey Highlights Widespread Shortfall
Data from 1,227 participants in the 2009‑2014 National Health and Nutrition Examination Survey were examined. Nearly half (48.7%) showed signs of periodontitis, while an overwhelming 77.9% did not meet the recommended daily intake of lycopene—a pigment abundant in tomatoes and other red fruits.
Lycopene Intake Cuts Risk Significantly
After adjusting for age, sex, race, smoking status and education, the team found that meeting lycopene guidelines was associated with roughly a one‑third reduction in the odds of severe periodontitis compared with insufficient intake.
Racial and Gender Disparities
The analysis also exposed clear demographic patterns. Severe gum disease was more common among men and non‑Hispanic Black participants.
- Adequate lycopene lowered the odds of severe periodontitis (OR = 0.33; 95% CI 0.17‑0.65).
- Non‑Hispanic Black adults faced nearly three times the risk of severe disease versus non‑Hispanic White adults (OR = 2.82; 95% CI 1.46‑5.45).
- Women were less likely than men to develop severe periodontitis (OR = 0.27; 95% CI 0.14‑0.55).
- Among non‑Hispanic Whites, both female sex and sufficient lycopene intake were protective.
- For non‑Hispanic Black participants, the lycopene benefit was not evident, suggesting different risk dynamics.