If you keep hearing things that aren’t there, you’re probably drinking too much coffee.
Just five cups a day could be enough to make your ears play tricks on you, according to researchers.
In an experiment, volunteers who had consumed ‘high levels’ of caffeine thought they were listening to Bing Crosby singing White Christmas even though the song was not being played.
The researchers described caffeine as ‘the most commonly used psychoactive drug’.
They said the study showed that the health risks of too much coffee need to be addressed.
