Caffeine Culture: Teens Are Trading Booze for Brews, Raising Concerns

While alcohol consumption among young people is trending down, another beverage is taking its place: caffeine. From cold brews and Frappuccinos to neon-colored energy drinks, today’s teens and young adults are increasingly reaching for caffeinated beverages to boost focus, energy, and social appeal. But local emergency physicians say that surge in caffeine consumption is starting to show up in the Emergency Department, and it’s not as harmless as it seems.

“We’re seeing more teenage patients come in with symptoms like anxiety, palpitations, and elevated heart rates,” says Rhea Mathew, MD, an emergency medicine physician at Torrance Memorial Health. “Many of them mention having energy drinks, Starbucks-style coffees, or sodas earlier that day. For most, it’s not life-threatening — but for some, particularly those with underlying heart conditions, excessive caffeine can trigger dangerous arrhythmias.”

In 2011, nearly 1,500 adolescents aged 12–17 years went to the emergency room for an energy-drink–related emergency, according to the Centers for Disease Control and Prevention.

Dr. Mathew explains that while moderate caffeine intake — about 100 to 200 milligrams per day — is generally considered safe, younger bodies are more sensitive to its effects. “A small pre-teen might experience heart palpitations or insomnia from the same amount that barely wakes up an adult,” she says. “Parents should pay attention if their child’s sleep, mood, or focus suddenly change. While stress can be a trigger, caffeine can sometimes compound its effects”

The American Academy of Child and Adolescent Psychiatry recommends that children ages 12 to 18 have no more than 100 milligrams of caffeine per day. Many energy drinks have more than that amount in one serving.

Energy drink labels typically include advisory statements indicating they are not intended for children, pregnant or nursing women, or individuals sensitive to caffeine.

Beyond the physical side effects, caffeine also amplifies the body’s natural stress response, increasing adrenaline and blood pressure. Over time, this can contribute to cycles of anxiety, poor sleep, and dependency. “You start chasing the high — that burst of energy — but then you crash, sleep poorly, and reach for more caffeine the next day,” Mathew adds.

Marketing, not just metabolism, plays a big role. Dr. Mathew points to how many caffeine products are now packaged and promoted to appeal to younger consumers. “Energy drinks and coffee-based beverages are being marketed like candy — colorful, trendy names, celebrity tie-ins. They’re placed where teens will see them, just like sugary cereals at kid-eye level. It’s intentional.”

Zachary Gray, MD, MPH, medical director at Torrance Memorial Medical Center, agrees that while caffeine toxicity is rare, the combination of high doses and other substances can be dangerous. “Caffeine becomes truly toxic at very high levels — around 1,200 milligrams consumed quickly — but where I see the most risk is when it’s mixed with alcohol,” he says. “Caffeine masks the sedative effects of alcohol, so people drink more than they realize. Tragically, that can lead to alcohol poisoning.”

The American Academy of Pediatrics advises against any caffeine use in children and adolescents, citing potential risks to heart health, sleep, and mental well-being. Studies show that up to 50% of adolescents consume energy drinks, with some teens regularly exceeding adult-level caffeine intake.

Both doctors agree that the best energy boosters are still the basics: sleep, hydration, balanced meals, and regular activity. “Teens should not replace the benefits of good sleep, nutrition, and hydration with artificial energy drinks,” says Dr. Mathew. “If your teen’s relying on caffeine to function, it’s time to take a closer look — at their habits, their sleep, and maybe even their stress.”