NEW STUDY IN THIS MORNING’S HEALTH REPORT. DOCTORS SAY — THE FINDINGS COULD HAVE AN IMPACT ON THE HEALTH OF MILLIONS OF AMERICANS. NBC’S TOM COSTELLO HAS THE DETAILS. A MAJOR MEDICAL DEVELOPMENT… FLIPPING THE SCRIPT THIS MORNING ON A LONG-STANDING DEBATE IN CARDIOLOGY. EKG THE RESULTS OF A HIGHLY-ANTICIPATED FEDERAL STUDY… INDICATING LIFESTYLE CHANGES AND MEDICATION ARE JUST AS EFFECTIVE AS COMMON INVASIVE HEART PROCEDURES – LIKE STENTS – FOR PATIENTS WITH STABLE HEART DISEASE. SOT DR. NATALIE AZAR: “WE’RE TALKING ABOUT MILLIONS OF AMERICANS THAT THIS COULD POTENTIALLY IMPACT.”