Can 13-Year-Olds Drink Energy Drinks?

Every major pediatric medical organization says the same thing: energy drinks are not appropriate for children and adolescents, and a 13-year-old should not be drinking them. The American Academy of Pediatrics states this flatly, citing their stimulant content as a health risk for anyone under 18.¹ That recommendation is not based on a single ingredient or a single risk. Energy drinks affect a young teenager’s heart, sleep, mood, metabolism, and teeth, and the research keeps painting a worse picture the more closely scientists look.

Why 13-Year-Olds Are Singled Out

A 13-year-old is not a small adult. Their body handles caffeine differently depending on where they are in puberty, and their cardiovascular system, brain, and hormonal landscape are all mid-construction. Research has found that both mood changes and heart responses to caffeine vary by gender and pubertal stage, which means a given dose of caffeine hits a 13-year-old boy differently than an 11-year-old girl or a 17-year-old of either sex.² The problem is that a standard energy drink does not come in a dose calibrated for any of those groups. A single can delivers up to about 115 mg of bioavailable caffeine, which pushes close to the recommended single-dose ceiling even for adults.³ For a 13-year-old who weighs 40 to 55 kilograms, that is a much larger dose per kilogram of body weight.

What Energy Drinks Do to a Young Heart

A randomized trial that measured blood pressure and heart rate in children and teenagers after drinking an energy drink found meaningful spikes: systolic blood pressure rose by about 5 mmHg and diastolic blood pressure rose by about 3 mmHg compared to a placebo, with a higher prevalence of readings that crossed into the hypertensive range.⁴ A few extra points of blood pressure may sound trivial. It is not. In a body that is still growing, repeated spikes from regular consumption can set the stage for long-term cardiovascular habits. Energy-drink-related emergency visits have been climbing in recent years.⁵ Reports to poison control centers and hospital emergency departments include symptoms ranging from jitteriness and racing heart to, in rare cases, life-threatening cardiac events.⁶

The heart effects also appear to be specific to energy drinks rather than just caffeine in general. When researchers compared energy drinks to coffee at similar caffeine levels, energy drinks increased a marker of cardiac electrical instability called periodic repolarization dynamics, while coffee did not.⁷ A separate study found that energy drinks, but not coffee, raised systolic blood pressure and arterial stiffness.⁸ The likeliest explanation is that it is not just the caffeine doing the damage. Energy drinks contain a cocktail of other active ingredients, including taurine, guarana (which itself contains caffeine), and high doses of sugar, all interacting in ways that are still being studied.

Sleep Disruption Is Not a Side Effect, It Is the Main Event

If you are 13, sleep is arguably the most important thing your body does. Growth hormone secretion, memory consolidation, and emotional regulation all depend on getting enough quality rest. Energy drinks directly undermine all of that. A study of adolescents found that regular energy drink use was an independent risk factor for poor sleep satisfaction in both boys and girls.⁹ A review looking at energy drink use, sleep, and downstream effects concluded that the strongest evidence links energy drink consumption to short or poor-quality sleep, which in turn connects to increased body fat in adolescents.¹⁰

The effect sizes can be dramatic. Among university students, energy drink users had over 13 times higher odds of poor sleep quality compared to nonusers after adjusting for age and sex.¹¹ That study was in young adults rather than 13-year-olds, so the exact number should be taken with some caution, but the direction of the finding is consistent across every age group that has been studied. A teenager who drinks an energy drink in the afternoon to get through homework or practice is trading tonight’s sleep for today’s alertness, and the trade almost always comes out negative.

Mood, Anxiety, and Mental Health

The mental health literature is concerning. A review of studies on energy drinks and psychological well-being found that the majority reported positive associations between energy drink consumption and symptoms of mental health problems, including stress, anxiety, and depression.¹² Longitudinal data from young adult males showed that those who started drinking energy drinks experienced an average increase in depression, anxiety, and stress scores over the follow-up period, while no parallel effect appeared in females.¹³ The researchers in that study went so far as to suggest that clinicians should screen for energy drink use when assessing mental health in young males.

Does this mean energy drinks cause depression? Not necessarily. The relationship could run in both directions. A stressed-out teenager might reach for energy drinks as a coping tool, which then disrupts sleep, which worsens mood, which drives more consumption. But the longitudinal evidence, where researchers tracked people over time and watched the sequence unfold, makes a stronger case than cross-sectional snapshots. At minimum, regular energy drink use appears to be a red flag for emerging mental health difficulties.

Blood Sugar and Metabolism

A typical energy drink contains 25 to 30 grams of sugar per serving, and many cans hold two servings. That alone is a problem, but the metabolic effects go beyond the sugar. A clinical study specifically measuring adolescents’ glycemic response found that blood glucose levels peaked significantly within 15 minutes of drinking an energy drink and remained elevated at 30 minutes, with insulin concentrations spiking even later. The pattern was especially pronounced in heavy consumers. The researchers noted a positive correlation between caffeine dose per kilogram and the blood sugar response, and they concluded that limiting energy drink sales to adolescents could improve their health.¹⁴

For anyone hoping that sugar-free energy drinks sidestep the problem, the news is not encouraging. An animal study found that mice given sugar-free energy drinks for 13 weeks developed elevated blood glucose, higher HbA1c, and increased insulin resistance markers that were statistically similar to the regular sugar-laden version.¹⁵ Human data also points in the same direction: chronic energy drink consumers showed significantly higher fasting insulin levels and insulin resistance compared to nonconsumers, regardless of sugar content.¹⁶ The caffeine and other stimulant ingredients appear to interfere with how the body handles glucose, independent of how many grams of sugar are on the label.

Effects on a Developing Brain

A large study using data from over 11,000 children aged 9 to 10 found that higher caffeine intake was associated with lower scores across several cognitive measures, including vocabulary comprehension, working memory, cognitive flexibility, processing speed, and episodic memory, even after controlling for age, gender, sleep, and family income.¹⁷ The effect sizes were small on an individual level but consistent across nearly every measure. The study could not prove that caffeine caused the cognitive differences. It is plausible that children who consume more caffeine are also sleeping worse or have other habits that explain the gap. But either way, the combination of caffeine consumption and lower cognitive performance in children is not reassuring.

What Happens to Their Teeth

Energy drinks are highly acidic, with pH values that rival cola and citrus juice. Lab studies have confirmed that all tested energy drinks were erosive to tooth enamel, with some brands performing worse than others.¹⁸ Clinical data backs this up: frequent energy drink consumption, especially daily use, was associated with higher enamel erosion scores and more dental cavities in a cross-sectional analysis.¹⁹ At age 13, many kids still have relatively new permanent teeth that will need to last another 70-plus years. Bathing them in acid and sugar during their first decade in the mouth is not a winning strategy.

Caffeine Dependence in Teenagers Is Real

One of the most underappreciated risks is simple dependence. A study focused on caffeine use among teenagers found that nearly 78% reported withdrawal symptoms when they stopped or cut back, over 40% showed tolerance (needing more for the same effect), and about 39% had tried and failed to control their use.²⁰ Those are the textbook criteria for substance dependence, applied to a legal and freely available stimulant. A 13-year-old who starts drinking an energy drink every day after school can develop a genuine physiological dependence in a matter of weeks, complete with headaches, fatigue, irritability, and difficulty concentrating when they miss a day.

The Gateway Pattern

There is a consistent and somewhat uncomfortable finding in the adolescent literature: energy drink consumption tracks with the use of other substances, and the link is strongest in younger teens. A study comparing middle school and high school students found that the association between energy drink use and substance use was generally much stronger among middle schoolers.²¹ A longitudinal study following adolescents over 12 months found that baseline energy drink use was associated with significantly higher odds of initiating cigarettes, e-cigarettes, hookah, and alcohol within the following year.²² The researchers floated the possibility that energy drinks might function as a gateway substance.

Mixing energy drinks with alcohol is a separate and more acute concern. Among adolescents who combined the two, the most commonly reported consequences were jitteriness, nervousness, and trouble sleeping, and about 6% reported needing medical attention after combined use in the past year.²³ The stimulant masks the sedating effects of alcohol, making it harder to tell how intoxicated you are.

Who Drinks Them and Why

Energy drink consumption is not evenly distributed. Boys are roughly twice as likely as girls to drink them more than once a week.²⁴ Adolescents in more economically deprived areas consume them more frequently, and the gap has been widening over time. In the UK, a one-step increase in neighborhood deprivation was associated with a 40% increased likelihood of energy drink consumption.²⁵ Norwegian data found similar patterns, linking consumption to lower socioeconomic status, physical inactivity, and higher screen time.²⁶

Marketing plays a documented role. Adolescents who reported higher exposure to online energy drink advertising and excessive gaming were more likely to be consumers, though media literacy about advertising techniques tended to blunt the effect.²⁷ Energy drink companies sponsor esports tournaments, extreme sports events, and social media influencers popular with teenagers. The branding is engineered to signal excitement and performance, which appeals to a 13-year-old in ways that a coffee mug never will.

How Some Countries Are Responding

The United States has no federal age restriction on energy drink purchases. A handful of states and cities have explored or passed local limits, but a 13-year-old in most of the country can walk into any convenience store and buy whatever they want. Other countries have moved more aggressively. Poland introduced a ban on energy drink sales to minors, and researchers have been studying how that changed consumption patterns among 15-to-17-year-olds.²⁸ The UK introduced a voluntary ban by major retailers, and Latvia, Lithuania, and several other European countries have enacted legal restrictions. Whether age-based bans actually reduce consumption or just shift where kids get them is still being evaluated, but the trend toward regulation reflects a growing consensus that the medical evidence warrants intervention.

What Parents Misunderstand About “Healthier” Options

Many parents assume that some sweet drinks are safer than others. A study testing parental perceptions found that parents viewed fruit drinks, sports drinks, and sweetened teas as healthier and less likely to cause disease than soda, even though the sugar content is comparable. Warning labels corrected those misperceptions and significantly reduced the odds that parents would choose a fruit drink for their child.²⁹ Energy drinks benefit from a similar perceptual distortion. The word “energy” implies vitality. Athletic-looking branding and sponsorship deals with professional athletes suggest the drinks support performance. Some parents confuse energy drinks with sports drinks like Gatorade, which have their own issues but at least do not contain stimulants. Clear, accurate labeling and frank conversations about what these products actually contain are more effective than hoping a 13-year-old will read the fine print on the can.

The Exercise Performance Trap

Teen athletes are a particularly vulnerable group. They hear that caffeine is ergogenic, meaning it can improve physical performance, and that is true in a narrow sense for adults at controlled doses. Energy drinks can temporarily boost endurance and power output. But the same review that acknowledged those effects also noted that regular consumption raises blood pressure and promotes hypertension, tachycardia, and nervousness, all of which increase cardiovascular risk during exercise.³⁰ For a 13-year-old on a travel soccer team or running cross-country, the small performance bump from a pre-practice energy drink is not worth the elevated heart rate, disrupted sleep, and growing dependence. Water, adequate food, and proper rest outperform any drink in a can.