We’ve heard for years about the dangers of eating too much fat or salt. But there have never been recommended limits for sugar on Canadian food labels, despite emerging research that suggests the sweet stuff may be making more of us fat and sick. In the fifth estate’s season premiere, Gillian Findlay digs into the surprising science — and the reaction from the food industry — to reveal The Secrets of Sugar. Has the sugar industry been hiding an unsavoury truth from consumers? (41:59)