A new study published in the American Heart Association journal Arteriosclerosis, Thrombosis and Vascular Biology found that people with blood type A, B, or AB — 66% of the American population — had a higher risk for coronary heart disease compared to those with blood type O [1].
![Normal artery vs narrowing of artery Normal artery vs narrowing of artery](https://www.highlighthealth.com/wp-content/uploads/2012/08/normal-artery-vs-narrowing-of-artery.jpg)