Diabetes accelerates the existing inflammatory damage associated with heart disease. You get a heart attack when a soft vulnerable plaque erupts and starts a cascade of inflammatory events leading to a complete blockage of the blood flow. If you have diabetes, the likelihood of a more intense inflammatory response leads to a greater likelihood of death.
It has long been known that a diabetes diagnosis is associated with a high risk factor for heart disease. But new research shows that the outlook is even more serious. There’s a higher risk of people with diabetes dying after a heart attack.