The most common form of heart disease is atherosclerosis. This is a slow clogging and aging of arteries throughout the body that can start even in childhood. The earlier a healthy lifestyle program is started, the more effective it will be.   This week, Dr. Kahn reviews 3 new studies on aspects of heart health in those under 50 years of age. Even as young as 18. The message is clear: start young and stay on track.   Another topic addressed is the release of the CORDIOPREV nutrition study in Spain regarding whether heart patients respond better to high olive oil vs lower-fat diets. The results are stunning.   Thanks to memoryhealth.com for sponsoring this week's episode.