Intro

Why do we like the things that we like? At the root of it is 3, 4 -Dihydroxyphenethylamine - or Dopamine - a chemical produced by the nerve cells in the brain to signal to others. But as Mike Williams finds out our pleasure circuit can be triggered by some obvious and not so obvious things.

(Photo: a young woman listens to music on headphones. Credit to Shutterstock)