Sudden cardiac death is what it sounds like. It’s often caused by a rhythm disturbance like ventricular tachycardia or ventricular fibrillation but can also be the result of a massive heart attack (acute blockage of blood flow to heart muscle).
I’m hopeful that good control of diabetes will reduce the risk of death.
“Diabetes mellitus was associated with a 2-fold increase in the risk of sudden cardiac death in the general population.”
Living an unhealthy lifestyle also raises the chance of heart problems.