Red Bull might “give you wings” but new research suggests just one can of the popular energy drink may increase the risk of heart damage.

A study of university students between the ages of 20 and 24 years old found that drinking one sugar free can of the caffeinated energy drink increased the "stickiness" of the blood and raised the risk of blood clots forming.

The Australian students, who were targeted in the study, showed a cardiovascular profile similar to that of someone with heart disease after drinking one can.

Red Bull emphatically denied that the drink, which is distributed to 143 countries worldwide, was dangerous.

In a statement, it said it had been proved safe by "numerous scientific studies,” and it had never been banned from anywhere it had been introduced.

However, Dr. Scott Willoughby, of the Cardiovascular Research Center at the Royal Adelaide Hospital and Adelaide University, said he was “alarmed” at the results of his survey.

“After one can it seemed to turn the young individual into one with more of the type of profile you would expect to see with someone with cardiovascular disease," he said.

“People who already have existing cardiovascular disease may want to talk to their physician before they drink Red Bull in future."

The results shocked the 30 students tested, some of whom drank up to eight cans per night to help them stay awake to study, and many now refuse to consume the energy drink again.

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