U.S. Senator Bernie Sanders passed a stress test this month after a heart attack in October.<br />The heart attack required him to have two stents inserted in an artery, reports Reuters.<br />Sanders’ campaign released letters from his main doctor and two heart specialists.<br />All the doctors gave the 78-year-old White House hopeful a clean bill of health.<br />Sanders’ exercise capacity was average for otherwise healthy men his age with no known heart disease.
