01/07/2026
A natural molecule found in cruciferous vegetables like broccoli and cabbage has been shown to fight the bacteria that cause cavities.
Hidden in these everyday vegetables is a compound that could play an important role in the future of dental care. This molecule is called 3,3′-diindolylmethane (DIM).
Scientists have found that DIM can weaken and break down the defenses of Streptococcus mutans, the main bacteria responsible for tooth decay. These bacteria normally protect themselves by forming a sticky layer, known as a biofilm, that helps plaque cling to teeth.
In laboratory studies, DIM was able to reduce up to 90% of these bacterial biofilms by stopping this sticky layer from forming. Without this protection, harmful bacteria become much easier to remove, making it harder for cavities to develop.
Researchers believe DIM could one day be added to toothpaste, mouthwash, and other oral care products. Because it comes from plants, DIM is considered low in toxicity and may target harmful bacteria without disturbing the healthy balance of the mouth.
Beyond oral health, DIM is also known for its anti-cancer properties, making it a promising natural compound with benefits that go beyond dental care. This discovery highlights a growing shift toward natural, multi-purpose ingredients that support both daily hygiene and long-term health.
📄 Source: Qvartz K., Cohen G., Kushmaro A. Antibiotics — Laboratory study on DIM and Streptococcus mutans biofilms.
