Conventional treatment for obesity assumes that all calories are alike, and that to lose weight one must simply “eat less and move more.” However, this prescription rarely succeeds over the long term. According to an alternative approach, the metabolic state of the fat cells plays a key role in determining body weight. From this perspective, conventional calorie-restricted, low fat diets amount to symptomatic treatment, destined to fail for most people. Instead, a dietary strategy aiming to lower insulin secretion promises to increase the effectiveness of long-term weight management and chronic disease prevention. Hear from endocrinologist and researcher, Professor David S Ludwig, who was described as an “obesity warrior” by Time Magazine. Dr Ludwig is author of the recent #1 New York Times bestseller 'Always Hungry? Conquer Cravings, Retrain Your Fat Cells, and Lose Weight Permanently'. This lecture was held as part of the Sydney Ideas program, co-presented with the Charles Perkins Centre on 14 November 2017: http://sydney.edu.au/sydney_ideas/lectures/2017/professor_david_ludwig.shtml