9 Nov 2025

How much caffeine is too much?

From Sunday Morning, 8:31 am on 9 November 2025

Caffeine is everywhere — in coffee, tea, energy drinks, vitamin-charged lemonades, chocolate, chews, and even inhalers. It can boost alertness, mood, and performance, but how much can we tolerate?  

Jim talks to Dr David Juurlink, toxicology professor at the University of Toronto and consultant at the Ontario Poison Centre, about modern caffeine consumption.  

Energy drink cans.

Photo: Mauro Matacchione