At times on this blog we have discussed the marketing of energy drinks to young people using less than honorable methods such as making them taste and look like alcoholic beverages. A study released this month now indicates that otherwise healthy individuals who consume only a single can of Red Bull, one of the largest selling energy drinks, may increase their risk for heart attack or stroke by changing the normal consistency of the blood.
The manufacturer of this product is aware of the risks, and even states that users should limit consumption to a maximum of two servings per day. Ingesting large amounts of caffeine in a short period of time -- whether it is from an energy drink, coffee, or any other source of caffeine -- is particularly hazardous when a person is exercising intensely or for those who have pre-existing conditions. Advertisers seek to hook young people on these beverages, when in reality drinking pure, clean water is the best way for athletes and all of us to stay hydrated and energized.
Red Bull drink lifts stroke risk: Australian study
Thu Aug 14, 2008 10:26pm EDT
By Rob Taylor
CANBERRA (Reuters) - Just one can of the popular stimulant energy drink Red Bull can increase the risk of heart attack or stroke, even in young people, Australian medical researchers said on Friday.
The caffeine-loaded beverage, popular with university students and adrenaline sport fans to give them "wings", caused the blood to become sticky, a pre-cursor to cardiovascular problems such as stroke.
"One hour after they drank Red Bull, (their blood systems) were no longer normal. They were abnormal like we would expect in a patient with cardiovascular disease," Scott Willoughby, lead researcher from the Cardiovascular Research Centre at the Royal Adelaide Hospital, told the Australian newspaper.
Red Bull Australia spokeswoman Linda Rychter said the report would be assessed by the company's head office in Austria.
"The study does not show effects which would go beyond that of drinking a cup of coffee. Therefore, the reported results were to be expected and lie within the normal physiological range," Rychter told Reuters.
Willoughby and his team tested the cardiovascular systems of 30 young adults one hour before and one hour after consuming one 250ml can of sugar-free Red Bull.
The results showed "normal people develop symptoms normally associated with cardiovascular disease" after consuming the drink, created in the 1980s by Austrian entrepreneur Dietrich Mateschitz based on a similar Thai energy drink.
Red Bull is banned in Norway, Uruguay and Denmark because of health risks listed on its cans, but the company last year sold 3.5 billion cans in 143 countries. One can contains 80 mg of caffeine, around the same as a normal cup of brewed coffee.
The Austria-based company, whose marketing says "Red Bull gives you wings", sponsors Formula 1 race cars and extreme sport events around the world, but warns consumers not to drink more than two cans a day.
Rychter said Red Bull could only have such global sales because health authorities across the world had concluded the drink was safe to consume.
But Willoughby said Red Bull could be deadly when combined with stress or high blood pressure, impairing proper blood vessel function and possibly lifting the risk of blood clotting.
"If you have any predisposition to cardiovascular disease, I'd think twice about drinking it," he said.
http://www.reuters.com/article/healthNews/idUSSYD5846120080815
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