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How Vitamin D3 Helps Fight Cavities
Analysis by Dr. Joseph Mercola
Reviewed by Keith W. Vrbicky, Sr., MD
February 6, 2025

STORY AT-A-GLANCE

  • Vitamin D3, synthesized from sunlight, plays a key role in oral health by promoting the remineralization of weakened tooth enamel, helping to reverse early-stage cavities and strengthen teeth.
  • Research demonstrates that vitamin D3 improves calcium absorption and availability, which are essential for the natural repair and strengthening of tooth enamel, thus reducing cavity risk.
  • Epidemiological research reveals a correlation between low vitamin D levels in adolescents and an increased risk of developing cavities, highlighting the importance of adequate vitamin D for dental health.
  • Vitamin D contributes to healthy tooth development even before birth and strengthens your body’s defenses against cavity-causing bacteria by boosting antimicrobial proteins in saliva.
  • Maintaining optimal vitamin D levels through sun exposure or supplementation, combined with consistent oral hygiene practices, in essential for protecting and maintaining a healthy, strong smile.

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