A diabetes pill called Jardiance cut deaths from heart attacks and strokes in thousands of patients, the first drug to show promise in helping subdue two of the world's most rampant health epidemics. The medicine, sold by Eli Lilly and Boehringer Ingelheim, reduced the risk of heart attacks, strokes and cardiovascular deaths by 14 percent in a study of 7,020 people with adult-onset diabetes and a high risk of heart problems.