Can you boost your brain power naturally?

For years, prescription stimulants have been finding their way into the hands of students and professionals, hoping to stay on top of their game. These 'cognitive enhancers' join an already booming market in over-the-counter supplements that promise to boost concentration and memory. But just how do these 'smart drugs' work, are they safe, and is there a natural alternative to boosting your brain?

Produced by Howard Timberlake

Animation by Adam Proctor

23 February 2022