Study links low lycopene intake to higher risk of severe gum disease
A new study has revealed a strong connection between low dietary intake of lycopene, a carotenoid found in red fruits such as tomatoes, watermelon, and grapefruit, and an increased risk of developing severe gum disease, specifically periodontitis, among older adults.
The link between lycopene and gum disease
Researchers discovered that adults aged 65 to 79 who did not consume enough lycopene were at a significantly higher risk of severe periodontitis. The study found that nearly 48.7% of participants had some level of periodontitis, while more than 77.9% were not consuming enough dietary lycopene.
After adjusting for factors like age, gender, race, and smoking status, the study concluded that individuals who consumed sufficient lycopene were one-third as likely to develop severe periodontitis compared to those who did not.
Impact of lycopene on oral health
Lycopene is a powerful antioxidant that is commonly found in fruits with red or pink hues, like tomatoes and watermelon, which are often associated with better overall health. This new research adds to the growing body of evidence suggesting that dietary choices can play a significant role in oral health. Periodontitis, a severe gum disease, affects both oral health and overall well-being, leading to tooth loss, inflammation, and other complications if left untreated.
Demographic disparities in gum disease
The study also highlighted demographic disparities in the prevalence of gum disease. For instance, severe gum disease was found to be more common among men and non-Hispanic Black adults, emphasizing the need for targeted interventions in these populations.
Other fruits with oral health benefits
This research comes shortly after another study in 2025 that discovered the potential benefits of a compound from apple peel in fighting periodontal disease. Morin, a natural extract found in guava leaves, apple and fig peels, certain teas, and almonds, has shown promising antimicrobial, anti-inflammatory, and antioxidant effects when tested against bacteria that cause periodontal disease.
Dr. Luciana Solera Sales, a researcher from São Paulo State University, mentioned:
“We started developing these systems in the form of tablets, films, and microparticles. However, until now, they were too large for oral use. In my PhD, we improved these products by making them smaller and more effective.”
This research indicates that not only red fruits but also compounds from other fruits and plants could play an essential role in oral health prevention.
The role of nutrition in oral health
The link between lycopene and gum disease further highlights the importance of nutrition in oral health. A balanced diet, including plenty of fruits and vegetables, is key to preventing gum disease and other health issues. While this study focused on older adults, the findings suggest that increasing lycopene intake could be an effective preventive measure for gum disease and an essential component of a holistic approach to dental care.
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