A 26-year-old man suffered a massive heart attack, and doctors believe he experienced the near-death experience because of his substantial dependence on energy drinks.

According to a medical report, a young man from Texas drank between eight to 10 energy drinks every day, which is over a gallon of energy drinks daily. “The patient stated that he drank any kind of energy drink he could get access to,” the report stated. In energy drinks alone, he consumed 1.6 grams of caffeine per day, four times the amount recommended by the U.S. Food and Drug Administration.

His worrisome energy drink habit appeared to have caused him to experience pain in his chest and left arm pain that lasted nine hours, excessively sweating, nausea, and vomiting. He was taken to the emergency room at Texas Tech University Health Sciences Center in El Paso, Texas.

The medical staff examined the man, but they found that his vital signs were normal, including heart rate, blood pressure, blood sugar, and oxygen levels. The man had no history of diabetes. A urine toxicology test found that the man was not on any illicit drugs or stimulants. The patient admitted to smoking a pack of cigarettes per day for the two years before his heart attack.

After further examination, doctors realized a problem with the man’s cardiovascular system. Doctors performed a cardiac catheterization, and inserted a thin tube into the groin, neck, or arm. Physicians discovered a blocked artery and believe that the excessive amounts of caffeine caused a blood clot. There was a buildup on the walls of his coronary artery that transports oxygenated blood.

The man was discharged from the hospital after two days. Doctors prescribed prescriptions for an “antiplatelet agent, an ACE inhibitor, a beta blocker and a statin.”

A report titled “STEMI Associated with Overuse of Energy Drinks” was published in Case Reports in Emergency Medicineoutlines the troubling case.

“Energy drink consumption is a growing health concern due to limited regulation and increasing use, especially in younger demographics,” said the paper’s co-author Daniel Solomin. “With substantially higher caffeine content than soft drinks or coffee beverages, in some cases, as well as other poorly studied substances, there is significant potential for harm, especially when consumed in large quantities.”