Energy Drinks and Heart Risks in Young Adults

Research by the American Heart Association links energy drinks and stimulant supplements to severe heart issues such as cardiac arrest and heart attacks in young adults. Results will be shared at the AHA Scientific Sessions in Chicago, November 2026.

Study Findings

A retrospective analysis reviewed over 28,000 FDA reports on cardiovascular events, including cardiac arrest, heart attacks, abnormal rhythms, palpitations, rapid heart rate, chest pain, and fainting. The incidents involving caffeine and stimulants formed a significant part of the study findings:

• Cardiac arrest reports were 11 times higher with caffeine and stimulants compared to other products.
• Heart attacks were 4.5 times more frequent.
• Ventricular arrhythmias or palpitations appeared four times more often.

Approximately 45% of the cardiovascular events from stimulant products involved individuals aged 18 to 34. Stimulants reviewed included caffeine, methylxanthines, guarana, yerba mate, synephrine, and yohimbine found in various products like soft drinks, meal shakes, and vitamins.

Caffeine Consumption

Dr. Colin Kane, a pediatric cardiologist, highlights that high caffeine levels pose heart risks, especially for those with existing conditions. While moderate caffeine intake, up to 400 mg daily, is considered safe, some energy drinks greatly exceed this in a small serving.

Dr. Pamela Benavidez warns about caffeine synergizing with other stimulants in these products. These effects remain less understood in healthy young people. Monitoring caffeine intake and heart symptoms is crucial. Symptoms to watch include palpitations, chest pain, dizziness, or irregular heartbeat.

“Seek medical help if you notice these symptoms,” advises Benavidez. “Consult a doctor if you have a heart condition or family history of sudden cardiac events.”

At-Risk Individuals

Dr. Kane emphasizes that people with undiagnosed heart conditions or known risky heart rhythms should be aware of stimulant consumption risks. The study suggests, however, that energy or stimulant abuse might elevate heart risk, even without precedents.

Study Limitations and Industry Response

The findings, yet unpublished in peer-reviewed journals, indicate association but not causation between the products and heart events. The voluntary nature of FDA reports indicates potential for data inconsistency. Additionally, other factors like alcohol or drug use might contribute to the incidents.

The American Beverage Association assures safety of energy drinks, noting moderate caffeine intake, up to 400 mg, is deemed safe globally. Andrea Wong from the Council for Responsible Nutrition adds that the study didn’t account for precise consumption data or misuse, affecting definitive risk assessment.