Can sugar threaten your health? Dr. Robert Lustig, Professor of Clinical Pediatrics at the University of California, San Francisco Medical School (UCSF) and Director of the UCSF Weight Assessment for Teen and Child Health (WATCH), says it can. He calls sugar one of the major causes of obesity and chronic metabolic diseases such as diabetes and heart disease. Dr. Lustig talks about his new book, Fat Chance: Beating the Odds Against Sugar, Processed Food, Obesity, and Disease: http://sfpl.bibliocommons.com/item/show/2558803093_fat_chance.