It’s a tough life as sweet-toothed sugar fiend; full of sugar rushes and blood sugar lows. We all know too much sugar isn’t good for you, but why do some of us crave that extra cookie or last slice of cake? Turns out, sugar’s hold on us is not too dissimilar to our brain’s reaction to sex and drugs.

This video with neuroscientists Dr Nicole Avenue, brought you by TED-Ed and STK Films, shows the neurological effect of treats and sweets, and why they shouldn’t be enjoyed to excess.