Oral cancer awareness: The role of antioxidants in prevention and patient care
Key Highlights
- Dental professionals play a critical role in early oral cancer detection and prevention, with hygienists leading patient education on risk factors like tobacco use and HPV.
- Antioxidants—including polyphenols, vitamin E, and carotenoids—show promise in reducing oxidative stress and supporting oral tissue health.
- Integrating nutrition guidance, antioxidant-focused products, and measurable tools can enhance prevention strategies and improve long-term oral-systemic outcomes.
Oral Cancer Awareness Month serves as an important reminder of the complex pathology dental professionals encounter daily. As clinicians, we are trained to perform comprehensive examinations, utilize adjunctive screening tools, and collaborate within referral networks to ensure timely diagnosis and biopsy of suspicious lesions. Dental hygienists, in particular, play a critical role on the front lines of prevention—providing tobacco cessation counseling, educating patients on viral risk factors such as HPV, and reinforcing the importance of routine screenings.
Beyond traditional risk reduction strategies, there is growing interest in how nutrition and systemic health influence oral disease outcomes. With more than 15 years of experience integrating oral-systemic health and nutrition into clinical practice, my focus has recently expanded into longevity and preventive care. A recurring theme in both research and clinical discussions is oxidative stress and the protective role of antioxidants.
While antioxidants are not a new concept, emerging evidence highlights their potential role in reducing the risk of oral cancer and supporting mucosal health. This article explores key antioxidant groups—polyphenols, vitamin E, and carotenoids—and how dental professionals can incorporate both education and practical tools into patient care.
What is oral cancer?
According to the Cleveland Clinic, oral cancer is a type of head and neck cancer that develops in the tissues of the mouth or throat, commonly affecting the lips, tongue, gums, and cheeks.¹ It typically begins in squamous cells, where DNA mutations lead to abnormal cell growth and potential metastasis.¹
The role of antioxidants
Antioxidants play a critical role in neutralizing free radicals and reducing oxidative stress—both of which are associated with cellular damage and carcinogenesis. Research continues to highlight specific antioxidants that may help suppress or reduce the risk of oral cancer. Below are three key groups with promising evidence.
Polyphenols
Polyphenols have demonstrated a multifaceted impact on oral cancer cells, including inhibition of cell growth and proliferation, decreased invasion and migration, enhanced apoptosis, and reduced expression of inflammatory cytokines such as IL-1β, IL-6, and IL-8.²
Polyphenolic compounds found in green and black tea—such as catechins, theaflavins, thearubigins, and epigallocatechin gallate (EGCG)—have been shown to suppress the growth and division of oral cancer cells in vitro.² These findings support the role of dietary polyphenols as a potential adjunct in prevention strategies.
Vitamin E
Vitamin E has demonstrated a protective role in maintaining oral mucosal integrity and may help reduce the risk of malignant and premalignant lesions.³ Studies also suggest that vitamin E can reduce glycoconjugate levels in oral cancer patients, which are often used as markers for disease progression.³
This highlights the importance of ensuring adequate intake of fat-soluble antioxidants in both systemic and oral health.
Carotenoids
Carotenoids, particularly beta-carotene, are another class of antioxidants associated with oral cancer prevention.⁴ These compounds support epithelial health and help neutralize oxidative damage. Research has shown that beta-carotene may contribute to the regression of premalignant lesions such as leukoplakia.⁴
As clinicians, one challenge is helping patients understand not only what nutrients to consume, but whether they are achieving adequate levels. This is where emerging technology can enhance patient education and engagement.
The Prysm IO device is a noninvasive screening tool that measures carotenoid levels in the skin using reflection spectroscopy. In a matter of seconds, it provides an antioxidant score that reflects overall fruit and vegetable intake. This objective data can serve as a powerful visual aid, helping patients better understand their nutritional status and motivating meaningful behavior change.5
Incorporating tools like this into practice allows clinicians to move beyond generalized recommendations and toward personalized, measurable prevention strategies.
Incorporating antioxidants into daily care
In addition to nutritional counseling, dental professionals can recommend oral care products that support antioxidant exposure to the oral mucosa.
Guru Nanda’s oil pulling formulations include fat-soluble vitamins such as vitamin E, D3, and K2. Vitamin E, in particular, has been studied for its antioxidant properties, which may help protect oral tissues from oxidative stress.3 Oil pulling can serve as a simple adjunctive practice for individuals looking to enhance their oral care routine. I have found that their Ayurvedic Formula—with sesame seed, sunflower seed, fractionated coconut, and peppermint essential oils—makes for a holistic addition to daily oral hygiene.6
Other products, such as AO ProRinse and toothpaste (PerioSciences) incorporate ingredients like aloe vera and ferulic acid—both known for their antioxidant and anti-inflammatory properties. These options can complement in-office care and reinforce daily prevention strategies at home.7
Conclusion
As dental professionals, we are uniquely positioned to identify early signs of oral cancer and guide patients in preventive strategies. While traditional screening and risk assessment remain essential, expanding our conversations to include nutrition and antioxidant support offers an additional layer of prevention.
By integrating evidence-based education, practical recommendations, and emerging technologies, we can empower patients to take a more active role in their oral and systemic health—ultimately supporting better long-term outcomes.
Editor’s note: This article first appeared in Clinical Insights newsletter, a publication of the Endeavor Business Media Dental Group. Read more articles and subscribe.
References
- Oral cancer. Cleveland Clinic. Updated January 27, 2022. Accessed March 22, 2026. https://my.clevelandclinic.org/health/diseases/11184-oral-cancer
- Guo V, Li Z, Chen F, Chai Y. Polyphenols in oral health: homeostasis maintenance, disease prevention, and therapeutic applications. Nutrients. 2023;15(20):4384. doi:3390/nu15204384
- Iqbal M, Khan M, Kumar P, Kumar A, Ajai K. Role of vitamin E in prevention of oral cancer: a review. J Clin Diagn Res. 2014;8(10):ZE05–ZE07. doi:7860/JCDR/2014/9166.4958
- Garewal HS, Katz RV, Meyskens F. Beta-carotene produces sustained remission in patients with oral leukoplakia. Arch Otolaryngol Head Neck Surg. 1999;125(12):1305-1310. doi:10.1001/archotol.125.12.1305-a
- Nu Skin Product Information Page. 2025.https://media.nuskin.com/m/4eb4bd134898b9fe/original/Prysm-iO-PIP-US-EN.pdf
- Guru Nanda Original Oil Pulling - 8.45 fl oz. Guru Nanda. https://gurunanda.com/products/gurunanda-pulling-oil-original-formula
- PerioSciences AO ProVantage Gel. PerioSciences. https://periosciences.com/products/ao-provantage-gel
About the Author
Stacy Weisman, MS, RDH, OMT
With over 20 years of experience in dental hygiene, Stacy Weisman, MS, RDH, OMT, is a dedicated clinician with advanced training in myofunctional therapy. She is the owner of The Hygienist Mom and author of the Nutritional Counseling for Dental Professionals guide, integrating nutrition, airway-focused dentistry, and preventive care into her practice. Through her myofunctional therapy business, she provides personalized, evidence-based care that promotes oral health, supports whole-body wellness, and empowers patients and professionals.