Would you take ‘smart drugs’?
'Smart drugs', claiming to improve memory and intelligence, appeared in the early 1990s. They are believed to work either by increasing the blood flow to the brain or by boosting the release of certain brain chemicals. They were originally developed to help people who had suffered a stroke, and those with Alzheimer’s disease (who lose their memory over time). Smart drugs can improve healthy people’s concentration, but not necessarily their memory.