articles.mercola.com/sites/articles/archive/2015/01/25/sugar-increases-chronic-disease-risk.aspx?x_cid=youtube Natural health expert and Mercola.com founder Dr. Joseph Mercola and Dr. Robert Lustig, Professor of Pediatric Endocrinology at the University of California in San Francisco (USCF), discuss how sugar acts as a poison when consumed in excess.