Energy drinks are heavily marketed, especially to young adults, with slogans such as "Red Bull gives you wings" and others that compare the effects of the drinks to the use of stimulating drugs. In addition, many of these drinks are heavily marketed in bars or for use in combination with alcohol, which could further increase the health risks for consumers. More than half of all college students ingest energy drinks, according to one East Carolina University survey, with most using them to counter insufficient sleep (67%), to increase energy (65%), and to drink with alcohol while partying (54%). Weekly jolt-and-crash episodes were experienced by 29% of users, and 19% reported heart palpitations (3).
Another survey of North Carolina college students showed that one in four mixed alcohol with energy drinks and were at increased risk for alcohol-related consequences (6). Researchers at the University of Buffalo have shown that male frequent users of energy drinks are more prone to "toxic jock identity" or hypermasculinity, risk-taking behavior, alcohol and drug abuse, physical fighting, and unsafe sex (5).
An energy drink lawsuit was filed by the Center for Science in the Public Interest against MillerCoors in regard to its alcoholic energy drink Sparks. The lawsuit alleged that Sparks contained unapproved additives and posed a health risk to consumers. Similar alcoholic energy drinks sold by Anheuser-Busch as Bud Tilt and Bud Extra were removed from the market in June 2008 after a similar lawsuit was filed by state attorney generals and advocacy groups.
One study from the Barrow Neurological Institute in Phoenix linked heavy consumption of energy drinks with seizures in four patients (2). In the wake of several recent deaths linked to energy drinks, a number of countries including France, Turkey, Denmark, Norway, Uruguay, and Iceland have instituted restrictions on their use. Canada requires warning labels cautioning against use by children or pregnant women, use in large quantities, and use with alcohol. Energy drink consumption remains unregulated in the United States, and the U.S. Food and Drug Administration does not currently require energy drinks to display warnings or limit the amount of caffeine they can contain.
One can of Red Bull falls short of the caffeine level found in a similar quantity of coffee, but some energy drinks have caffeine levels far higher, and legislation may be necessary to limit caffeine concentration and provide product information and warning labels. According to researchers at Johns Hopkins University, the labels of popular energy drinks, such as Red Bull and Rockstar, should contain warnings about the amount of caffeine they contain and the potentially harmful side effects they could cause (7). The researchers suggest that most consumers are unaware of the caffeine content in these energy drinks or about the potential dangers, and that information should be added to the product labels. Johns Hopkins scientists and physicians have written a letter to the U.S. Food and Drug Administration asking that energy drinks contain a prominent label listing caffeine content, and that the concentration of caffeine come under regulation.
Caffeine in and of itself has not been related to health risks. Recent large-scale studies have shown that coffee, tea, and caffeine users experience modest decreases in risk of heart disease, Type 2 diabetes, liver cancer, and breast cancer (8). Despite earlier concerns, caffeinated beverages do not cause bone loss.
Among undergraduate students, the frequency of energy drink consumption has been linked to marijuana use, sexual risk taking, fighting, smoking, alcohol problems, and illicit prescription drug use (4). Thus, the real problem with energy drinks is the user who ingests high amounts or combines intake with alcohol abuse and other risky behaviors. Another concern is the style of advertising used by energy drink companies that principally target teens and young adults and promotes the performance-enhancing and stimulant effects of energy drinks with drug-related terms such as blow and cocaine.
In general, a can of Red Bull is not much different than having a cup of coffee with cream and sugar. But mix in some aggressive marketing, alcohol use, and risky behavior, and energy drinks are no longer as benign as a cup of joe.
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3. Malinauskas BM, Aeby VG, Overton RF, Carpenter-Aeby T, Barber-Heidal K. A survey of energy drink consumption patterns among college students. Nutr J
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7. Reissig CJ, Strain EC, Griffiths RR. Caffeinated energy drinks - A growing problem. Drug Alcohol Depend
© 2009 American College of Sports Medicine.
8. van Dam RM. Coffee consumption and risk of type 2 diabetes, cardiovascular diseases, and cancer. Appl Physiol Nutr Metab