New data suggests lack of sleep early in life can raise the risk of heart disease later. Research published in Pediatrics connects insufficient sleep in young teens to cardiac risk factors, including high blood pressure, abnormal cholesterol and obesity. In the book, "Why We Sleep: Unlocking the Power of Sleep and Dreams," Matthew Walker says sleep is underestimated as a prevention of disease. Walker, director of the Center for Human Sleep Science at the University of California-Berkeley, joins "CBS This Morning" to discuss the importance of sleep.
