Those side effects include changing blood pressure and other strains on your heart.
In one study, using an energy drink similar to Red Bull or Monster, participants showed dramatic changes on their EKG tests when drinking the energy drink as opposed to those participants simply drinking the same amount of caffeine.
As reported by NBC News, “An ECG change known as QTc prolongation and sometimes associated with life-threatening irregularities in the heartbeat was seen after drinking the energy drink, but not after drinking the caffeine beverage, the study team reports.“
The study authors note that several energy drinks have been pulled from the market after testing similarly, and that some energy drinks have been linked to fatalities.
Dr. Jennifer L. Harris from University of Connecticut’s Rudd Center for Food Policy and Obesity, located in Storrs, notes there are significant concerns about the beverages, especially the way they are marketed to young boys. She says that ER visits among adolescents and young people in relation to energy drink consumption are on the rise. More than half of the cases of people who got sick from energy drinks between 2010 and 2013 were children.
Harris also noted, “Some of these ingredients (including taurine and guarana) have not been FDA-approved as safe in the food supply, and few studies have tested the effects of caffeine consumption together with these ‘novelty’ ingredients.”