Energy Drinks, Stimulant Supplements Linked to Higher Heart Risks in Young Adults

Recent research indicates that energy drinks and stimulant supplements may pose a heightened risk of severe heart issues in young adults. According to initial findings, there is an 11-fold increase in cardiac arrests and a 4.5-fold greater likelihood of heart attacks associated with these products. Some energy drinks contain up to three times the caffeine found in a cup of brewed coffee, along with additional stimulants like guarana and taurine that can further elevate blood pressure and heart rate.

Most healthy adults can safely consume up to 400 milligrams of caffeine per day, but individuals with heart conditions, irregular heartbeats, or a family history of heart disease should consult a healthcare professional before consuming energy drinks or stimulant products.

The study, presented at the American Heart Association's 2026 Scientific Sessions in Chicago, is still preliminary, meaning it cannot definitively prove that energy drinks cause heart problems. Nonetheless, it sheds light on the potential cardiovascular effects of these widely used products, especially among adults under 35 who consume them frequently.

Study author Sai Samayamanthula, a medical student at the University of Virginia, noted that energy drinks are often marketed as everyday energizers and sold alongside soda and bottled water, suggesting that most people assume they carry no real risks. For many healthy individuals, occasional consumption may pose a minimal risk. However, frequent users of energy drinks or stimulant-containing supplements may quickly exceed the recommended daily caffeine limit, potentially leading to cardiovascular harm.

Researchers analyzed 28,345 reports submitted to the Food and Drug Administration (FDA) from 2017 to 2025. Of these, 854 involved caffeinated energy drinks or stimulant supplements, while the rest pertained to non-stimulant products. Compared to non-stimulant products, cardiac arrests were reported 11 times more often with energy drinks and stimulant supplements, and heart attacks occurred 4.5 times more frequently. Ventricular arrhythmias and palpitations were also reported about four times more often.

Nearly 45% of heart-related reports involved adults aged 18 to 34. Gregory M. Marcus, a professor of medicine at the University of California, San Francisco, and chair of the 2026 AHA scientific statement on caffeine and cardiovascular disease, emphasized the need for more systematic safety monitoring of caffeine and stimulant-containing products.

He also highlighted the importance of healthcare professionals asking younger patients about their consumption of these products if they experience palpitations, chest pain, or fainting spells.

Cheng-Han Chen, a cardiologist at MemorialCare Saddleback Medical Center, agreed that the findings are concerning but not entirely unexpected. He explained that caffeine can increase blood pressure and heart rate, while other ingredients in energy drinks may further stimulate the cardiovascular system and elevate stress hormone levels.

While occasional consumption is likely to have minimal long-term consequences for heart health in most healthy individuals, frequent or excessive consumption could potentially increase the risk of hypertension and cardiac arrhythmias.