'Drinking too much cola can cause fatal heart problems'

Drinking too much cola can cause fatal heart problems, experts have warned.

The sugary drink has already been linked with obesity, tooth decay, diabetes and softening of the bones. Now doctors believe it can lead to hypokalaemia, where potassium levels in the blood fall too low.

It can cause an irregular heartbeat, associated with heart attacks, and muscles can become paralysed.

In one case, a 21-year-old who drank three litres of cola a day suffered a heart blockage. She fully recovered when she stopped drinking it and took a potassium supplement.

Researchers believe the drink’s high sugar and caffeine levels make the body excrete too much potassium. Dr Moses Elisaf, of the University of Ioannina in Greece, said: “Excessive consumption can lead to a range of health problems, including irregular heartbeat and paralysis.

“Most people recover when they stop drinking cola and start taking a potassium supplement.”

The Soft Drinks Association said: “These are extreme cases. Cola can be enjoyed as part of a balanced diet.”