The science of sugar

The authors of the recent meta-analysis on dietary sugar and body weight, Lisa Te Morenga, and Jim Mann, from the Departments of Human Nutrition and Medicine at the University of Otago, join us to discuss their findings.Also this week, the BMA wants doctors to be more involved in influencing policy on recreational drugs. Vivienne Nathanson, its director of professional activities, explains its new report, and how individual testimony can combine to convince governments to change policy.