The artificial sweetener, aspartame, is the bedrock of the diet industry. Found in everything from fizzy drinks to vitamins and marketed under a variety of different names, it is difficult to detect and even harder to avoid. But how safe is it? Does it really cause brain tumours, blindness and other serious illnesses? How did the US Federal Drug Agency come to approve such a potentially dangerous product. A year after aspartame was added to diet drinks; diabetes rates jumped 30% and incidents of an unusual type of brain tumour jumped 60%. Look for one of the most notorious Bush era 'villains' in this 'whodunit' of corporate rule.