U.S. Senator Bernie Sanders passed a stress test this month after a heart attack required him to have two stents inserted in an artery in October, doctors to the Democratic presidential candidate said on Monday. Sanders’ campaign released letters from his main doctor and two heart specialists, who all gave the 78-year-old White House hopeful a clean bill of health after physical exams, electrocardiogram monitoring and a treadmill stress test. “Mr Sanders is more than fit enough to pursue vigorous activities and an occupation that requires stamina and an ability to handle a great deal of stress,” said Philip A. Ades, the director of cardiac rehabilitation at the University of Vermont Medical Center (UVM), where the senator had the stress test on Dec. 11.
