Dr. Sanjay Gupta has spent the last year looking into heart disease for his documentary, "The Last Heart Attack," set to air on CNN this Saturday at 8pm ET.
Along the way, he met a woman who needed emergency heart surgery and turned it down, opting for a plant-based diet instead.
Today on American Morning, Dr. Gupta explains how the this woman's new diet has benefited her health and shows before and after heart scans from a patient who had clogged arteries before reforming their eating habits.