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Are energy drinks a bunch of bull?

STILLWATER, Okla. – We have all heard hype about energy drinks and their ability to give you quick energy and greater physical endurance. But are these drinks harmful to your health?

Janice Hermann, Oklahoma State University Cooperative Extension nutrition specialist, said the main ingredients in energy drinks are typically caffeine and sugar. Many energy drinks also contain guarana which is a natural source of caffeine, taurine and B vitamins – all of which are perceived to increase energy. They also contain various herbs.

“Energy drinks claim to supply consumers with extra energy,” Hermann said. “Many products make additional claims such as improved strength and memory. These types of claims are ‘structure function claims’ which are not preapproved by the Food and Drug Administration,” Hermann said.

These drinks are popular among athletes and young adults and are consumed before workouts, at dance clubs and as pick-me-up in the afternoon. A reported practice of concern is mixing caffeine containing energy drinks with alcohol.

Caffeine is known to affect physical endurance and is banned by the International Olympic Committee. Yet, there is limited research related to the potential health effects of consuming caffeine in combination with other compounds and herbs found in many of these beverages.

Energy drinks often contain caffeine at amounts similar to coffee but higher than sodas. In a recent study, the caffeine content of 10 different energy drinks ranged from 0 milligrams to 140 milligrams per 8 ounce serving. Hermann said many energy drinks contain two to three servings per bottle.

In comparison, 8 ounces of caffeinated soft drinks contained 20 milligrams to 40 milligrams and 8 ounces of brewed coffee contained 65 milligrams to 120 milligrams.

Moderate caffeine intake, about 300 milligrams per day, is not associated with adverse effects. Consuming very high levels of caffeine has been associated with increased heart rate, nausea, restlessness, anxiety and tremors.

“Individual sensitivity to caffeine varies and certain groups such as pregnant women and children should keep an eye on their caffeine intake and talk with their physician about their personal intake,” she said.

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Oklahoma State University, U.S. Department of Agriculture, State and Local Governments Cooperating: The Oklahoma Cooperative Extension Service offers its programs to all eligible persons regardless of race, color, national origin, religion, gender, age, disability, or status as a veteran, and is an equal opportunity employer.

Katie L. Reim
Communications Specialist
Agricultural Communications Services
140 Agriculture North
Oklahoma State University
Stillwater, OK 74078
405-744-6792 (Phone)
405-744-5739 (Fax)
katie.reim@okstate.edu