most powerful prevalent risk factor for a stroke so again both for the atherosclerosis type of strokes as well as the bleeding the brain type of strokes this is what we could do to prevent the most and that would be control everybody's blood pressure atrial fibrillation we talked about cholesterol as obviously what's building up the blood vessels and patients who have diabetes have more atherosclerosis faster than people who don't have diabetes so getting good control of the diabetes is important if you've had a stroke