THE GUARDIAN: US teenager dies after succession of caffeine drinks in two hours

Description

Tony Heagerty, professor of medicine at Manchester University, said it was likely that Davis had a genetic heart condition, which may not have revealed itself in the autopsy, and that the caffeine put stress on his heart.

“I think the caffeine must have interacted with something wrong with this heart,” he said. “If you are an unfortunate person with a pre-existing condition and put yourself in a stressful situation by drinking too much caffeine you are in danger.”

But he said the levels consumed by Davis would not be harmful to the overwhelming majority of people, except for making them feel strange.