Drinking only one energy drink may, in some cases, increase the risk of heart attack in 90 minutes, according to a study conducted at the University of Texas in Houston.
Scientists have found that energy drinks narrow the blood vessels, which hinders circulation and limits blood flow to vital organs, including the heart, reports Medical News Today.
It is widely known that energy drinks have a bad influence on the stomach, the nervous system and can cause cardiac problems if consumed in large quantities, but now the list of adverse effects is added to the increased risk of metabolic syndrome.
During the investigation, scientists watched 44 healthy medical students in their twenties, who are all non-smokers.
The objective of the study was to verify the function of the endothelium, a tissue layer inside the blood vessels, since the findings of previous studies of the Scientific Center Sidars-Sainay in the homonymous hospital of Los Angeles said that endothelial dysfunction proved to be a significant indicator of a greater risk of heart attack. In these cases, the arteries can not spread completely.
Houston specialists verified the function of each interviewee's endothelium before drinking energy drinks and 90 minutes later. It turns out that after an hour and a half of drinking these beverages, the diameter of the blood vessels is half the size.
Scientists have associated this harmful effect with the ingredients of energy drink, mainly caffeine, taurine and sugar.
The energy drink can contain 37 grams of sugar (9 teaspoons), as well as 80 milligrams of caffeine, which can cause a higher secretion of adrenaline, which produces a blood pressure leak.
According to statistics, in the United States, one-third of young people under the age of 17 drink energy drinks regularly and a 2017 study has shown that three cans (960 milliliters) can cause dizziness and arrhythmia in up to 50% of young adolescents.