Childhood Cavities Linked to Adult Heart Disease

Poor oral health during childhood significantly predicts cardiovascular issues in adulthood, according to a large study from the University of Copenhagen. Researchers tracked over 568,000 Danish children born between 1963 and 1972.

Children with multiple cavities or severe gum disease were found to be much more likely to develop heart attacks, strokes, and clogged arteries as adults. Specifically, those with high rates of tooth decay experienced a 45% increase in heart disease rates compared to peers with healthy teeth.

The study, published in the International Journal of Cardiology on April 1, 2026, suggests the link stems from how the body responds to long-term infection. Bacteria from severe gum disease can enter the bloodstream, causing systemic inflammation that may accelerate atherosclerosis.

This research also uncovered an even stronger association between childhood oral health and type 2 diabetes, with severe gum disease increasing diabetes risk by 87% and cavities by 19%. Researchers highlighted that dental care is a major unmet health need for children in the U.S. and that dental disease is highly preventable.

Officials noted that while treating children's teeth won't solve cardiovascular disease, targeting at-risk groups through improved oral health can significantly reduce the likelihood of chronic illness. The mouth serves as the gateway to overall health, making dental hygiene a critical tool for disease prevention.