It is estimated that around 16% of university students in the UK are taking ‘smart drugs’, medication available on prescription for conditions such as Alzheimer’s, that are now being used by healthy people to enhance memory, concentration and other cognitive abilities. Neither is it just students who are popping the pills, but their lecturers and a swathe of professionals eager to achieve that extra edge. Smart drugs inspired this year’s Hollywood film Limitless, with the tagline, ‘One pill. Anything is possible’. The scale of their use has also caused the UK’s leading expert on ‘cosmeceutical’ brain treatments, Barbara Sahakian, to speculate that students might soon have to take part in pre-exam drug tests to prevent wide-spread ‘cheating’.