Mammograms Reveal Heart Health Clues

Mammograms, primarily used for breast cancer screening, are increasingly recognized for their ability to reveal crucial indicators of cardiovascular health. The presence of calcium deposits in the medium-sized arteries supplying the breast, termed breast arterial calcification (BAC), is now understood as a significant marker for future heart disease and stroke risk. These calcifications appear as white lines on mammogram images and are distinct from signs of breast cancer.

Recent research, including a meta-analysis of over 68,000 women published in 2026, indicates that women with BAC have roughly double the risk of stroke and heart failure, and nearly triple the risk of dying from heart disease. Artificial intelligence is playing a key role in accurately measuring BAC from existing mammogram images, without additional radiation exposure. This technology is helping to develop metrics that improve cardiovascular risk prediction, especially when integrated with standard assessment tools.

In October 2026, Maryland enacted a law requiring mammography centers to inform patients in writing if BAC is detected. This initiative aims to prompt discussions about heart health between patients and their doctors. Experts anticipate similar regulations will be adopted in other states, drawing parallels to the implementation of breast density reporting requirements. Further research, such as the Australian TIM-TAM trial, is underway to determine if managing care based on BAC detection can prevent heart attacks and strokes.

While the absence of BAC does not rule out cardiovascular disease, its presence can serve as a valuable prompt for a comprehensive cardiovascular health assessment. Doctors may recommend blood pressure checks, cholesterol and kidney function tests, and utilize risk calculators like the AHA's PREVENT tool. Lifestyle modifications and, in some cases, medication such as statins or blood pressure drugs, may be advised to mitigate identified risks.