Consuming energy drinks, especially in large amounts, can lead to adverse heart reactions. A study published in the International Journal of Cardiology found that those who consume more than two energy drinks per day are more likely to experience heart problems, like palpitations.

The study analyzed data from patients in a South Australian emergency room between the years of 2014 and 2015 who presented heart issues. The study found that 36 percent of the patients had consumed an energy drink within 24 hours of going to the hospital. Some patients even consumed high amounts of energy drinks, from 8 to 12 bottles. The patients who drank more experienced more frequent palpitations.

Energy drinks are becoming increasingly popular, especially among adolescents and young adults. According to the Centers for Disease Control and Prevention, 31 percent of 12-17 year olds consume energy drinks on a regular basis. This number is even higher for 18-24 year olds, at 34 percent.

The amount of energy drinks consumed among people in these age groups is concerning, especially when the drink is mixed with alcohol. Caffeinated alcoholic beverages are as popular as energy drinks themselves. But the alcohol creates even more of a health problem, because the alcohol breaks down the caffeine more slowly.