Can 14-Year-Olds Take Creatine? What the Experts Say

No major medical body has banned creatine for 14-year-olds, but no major medical body has enthusiastically endorsed it for that age group either. The honest expert consensus lands in an uncomfortable middle ground: creatine is one of the most studied supplements in sports nutrition, with a strong safety record in adults and even in clinical use with children, yet dedicated research on healthy adolescent athletes remains thin. That gap between what we know in adults and what we can confidently say about teenagers is where most of the real debate lives.

What We Actually Know About Creatine in Adolescents

Creatine is a compound your body already makes, mostly in the liver and kidneys, and stores primarily in muscle tissue. You also get it from meat and fish. Supplementing with creatine monohydrate tops off those muscle stores, which helps cells regenerate the energy molecule they burn during short, intense efforts like sprinting or heavy lifting.¹ That much is well established across hundreds of studies in adults.

The picture in adolescents is far less complete. A 2021 review focused specifically on creatine in children and adolescents found that the studies that do exist generally show performance improvements with no reported adverse events, but the authors stressed that the total body of research is limited in scope.² A separate 2023 literature review in the Journal of Orthopaedics was less optimistic about the performance side, rating the overall quality of available studies as poor and finding no consistent evidence that creatine improved athletic performance in pediatric and adolescent populations.³

That disagreement is worth sitting with. The issue is not that researchers found harm. It is that researchers have not done enough high-quality work in this age group to say much of anything with confidence. A 2018 safety review in Frontiers in Nutrition made this point directly, noting that research on creatine supplementation in adolescents is extremely limited, especially regarding safety and efficacy.⁴

The Strongest Safety Data Comes From Adults and Clinical Populations

The International Society of Sports Nutrition published its position stand on creatine in 2017, concluding that both short-term and long-term supplementation (up to 30 grams per day for as long as five years) is safe and well-tolerated in healthy individuals and in patient populations ranging from infants to the elderly.⁵ That “infants to the elderly” phrase matters here because it includes some clinical contexts in which very young people have taken creatine under medical supervision.

The most direct pediatric evidence comes from clinical medicine, not sport. Children with muscular dystrophy and other neuromuscular diseases have been given creatine in controlled trials. A Cochrane systematic review found high-quality evidence that creatine increased muscle strength in people with muscular dystrophy and was well tolerated.⁶ A trial specifically in boys with Duchenne muscular dystrophy found that creatine improved handgrip strength and fat-free mass, with the authors also reporting a reduction in a bone-turnover marker.⁷ Another study in patients with various neuromuscular diseases found that a short course of creatine increased body weight, handgrip strength, and leg strength.⁸

These clinical studies are reassuring because they show that young bodies can process creatine without obvious kidney, liver, or growth problems. But they involve children with serious medical conditions taking creatine under close supervision, which is a different situation from a healthy 14-year-old buying a tub of powder at a supplement store. The safety signal is encouraging; it just does not directly answer the teenager-in-the-gym question.

Why Some Experts Urge Caution Anyway

If creatine has not been shown to be dangerous in adolescents, why do many sports medicine doctors and pediatricians still hesitate to recommend it for a 14-year-old? Several practical reasons come up repeatedly.

The first is developmental context. At 14, most people are still growing. Puberty is already driving rapid changes in muscle mass, bone density, and hormonal milieu. Some clinicians prefer to let that natural process play out before layering on ergogenic supplements, not because creatine is known to interfere with puberty, but because we have essentially no data on how supplementation interacts with a still-developing endocrine system over the long term.

The second is that a 14-year-old’s training base is usually still developing. Most teens would benefit far more from consistent training, adequate protein intake, and enough sleep than from any supplement. Creatine’s documented performance benefits tend to matter most for athletes already training near their ceiling in short-burst, high-intensity activities. For someone who has only been lifting seriously for a few months, the gains from better programming and nutrition dwarf anything creatine can add.

The third is supplement quality, which deserves its own discussion.

The Supplement Purity Problem

Creatine monohydrate itself has a well-studied safety profile. The products sold as creatine supplements are a different story. Dietary supplements in the United States are not required to undergo the same pre-market testing as pharmaceuticals, and third-party testing is voluntary. A study that analyzed creatine products available on Amazon found that it is not possible to rule out the presence of impurities or banned substances in products that do not undergo independent certification. The same study noted that across the broader supplement market, roughly 28 percent of supplements analyzed in one large survey contained undeclared substances, including anabolic-androgenic steroids.⁹

For a 14-year-old, this matters more than for an adult. Contamination with steroid precursors or other undeclared compounds could potentially affect a developing endocrine system. It could also result in a positive doping test for a young athlete competing in tested sports. If you or your teen does decide to use creatine, choosing a product that carries a third-party certification (NSF Certified for Sport, Informed Sport, or similar) substantially reduces the contamination risk. Plain creatine monohydrate is the form with by far the most safety and efficacy data behind it, and products with fancy alternative forms of creatine have little to no evidence of being more effective or safer.¹⁰

The DHT and Hair-Loss Question

One study that regularly surfaces in online discussions found that three weeks of creatine supplementation in college-aged rugby players raised levels of dihydrotestosterone (DHT) by 56 percent during the loading phase, settling to 40 percent above baseline during a maintenance phase, while total testosterone did not change.¹¹ DHT is the androgen linked to male-pattern hair loss, and the finding understandably spooked people.

A few things are worth keeping in perspective. This is a single study with a small sample size, and no other published trial has replicated the DHT finding. It also involved young adults, not 14-year-olds. Still, for a teenager already moving through puberty with rapidly shifting hormone levels, the possibility that creatine could amplify DHT conversion is a legitimate open question rather than an established risk. It is one of the clearest examples of why “no evidence of harm” is not the same as “evidence of no harm” in this age group.

Debunking the Cramps and Dehydration Myth

If your teen has heard that creatine causes muscle cramps or dehydration, the evidence actually points in the opposite direction. A study of Division I college football players found that creatine users had significantly less cramping, heat illness, dehydration, muscle tightness, muscle strains, and total injuries compared to non-users.¹² A review published in the British Journal of Sports Medicine concluded that despite widespread public belief, there is little evidence that creatine supplementation in hot conditions presents additional risk. The authors noted that creatine may actually help maintain blood volume, support temperature regulation, and reduce heart rate and sweat rate during exercise in the heat.¹³

That said, creatine does pull water into muscle cells, which is why it typically causes a few pounds of water-weight gain in the first week. Staying well hydrated while taking it is still sensible, especially for young athletes training in warm weather. The myth to reject is that creatine itself causes dangerous dehydration.

Stomach Issues and Dosing

The most common genuine side effect of creatine is gastrointestinal discomfort, and it appears to be dose-dependent. A study that compared 5-gram and 10-gram single servings found no significant difference in GI symptoms between the 5-gram group and a placebo group. But the 10-gram single-dose group had significantly more diarrhea, with over half reporting it compared to about a third in the placebo group.¹⁴ The practical takeaway is straightforward: if a 14-year-old is going to use creatine, large single doses are more likely to cause stomach problems. Splitting doses across the day, or simply sticking to 3 to 5 grams once daily (skipping the “loading phase” that some protocols recommend), reduces the risk of GI issues considerably.

Most adolescent studies that have been conducted used doses in the range of 0.1 to 0.3 grams per kilogram of body weight per day during a loading phase, followed by a lower maintenance dose. For a 14-year-old weighing around 50 kilograms, that might work out to roughly 3 to 5 grams per day for maintenance, similar to standard adult protocols. But again, the evidence base for optimal adolescent dosing is thin.

Creatine and the Adolescent Mind

A dimension of this question that gets less attention than it should involves psychology. Research has found that creatine use among adolescents and young adults is prospectively associated with increased symptoms of muscle dysmorphia, a condition marked by obsessive preoccupation with being insufficiently muscular. One study found that creatine monohydrate use predicted higher muscle dysmorphia scores at a follow-up assessment, independent of prior symptom levels and even independent of anabolic steroid use.¹⁵ A separate study of Canadian adolescents and young adults found that use of muscle-building supplements, creatine included, was associated with greater muscle dysmorphia symptomatology and higher odds of meeting the clinical threshold for the condition.¹⁶

This does not mean creatine causes muscle dysmorphia. The relationship could run the other way: teens who are already fixated on getting bigger may be more likely to seek out supplements. Research on Australian adolescent boys found that higher drive for muscularity and participation in weight training were the strongest predictors of supplement use, while age, BMI, and body esteem were not significant predictors.¹⁷ But regardless of causal direction, supplement use can serve as a marker. If a 14-year-old is urgently asking about creatine, that might be an opening for a broader conversation about body image, realistic expectations, and what healthy training habits look like.

Creatine Beyond Muscle

Your brain also uses creatine for energy, and a small but growing body of research has explored whether supplementation can sharpen thinking. A systematic review of randomized controlled trials in healthy people found some evidence that creatine may improve short-term memory and reasoning, but the effects on long-term memory, spatial memory, and attention were unclear. Interestingly, young adults in the studies showed no cognitive changes from creatine supplementation, while older or stressed individuals seemed more likely to benefit.¹⁸ For a 14-year-old hoping creatine will help with school as well as sport, the current evidence is not encouraging.

A cross-sectional study looking at dietary creatine intake (from food, not supplements) in children and adolescents aged 2 to 19 found that higher creatine intake was associated with greater height, weight, and BMI. Those in the highest quartile of creatine intake, consuming about 1.5 grams or more per day from food, were significantly taller and heavier than those eating less.¹⁹ This is observational data, though, and higher dietary creatine strongly correlates with eating more meat, which also means more protein, calories, and other nutrients that support growth. It is a reminder that creatine from food is already part of a normal diet, but it does not tell us whether supplementation on top of that would matter for growth.

Sex Differences Worth Noting

Most creatine research has been conducted in males, and the biology differs between sexes in ways that could be relevant to a 14-year-old girl considering supplementation. Females typically carry 70 to 80 percent lower endogenous creatine stores than males.²⁰ That difference means there may be a larger theoretical window for benefit from supplementation in females, but it also means the existing male-dominated research may not translate directly. The adolescent-specific research gap is even wider for girls than for boys.

When a Pediatrician or Sports Medicine Doctor Gets Involved

If a 14-year-old is training seriously in a sport that involves short, explosive efforts, such as sprinting, swimming, wrestling, or football, and has already established solid nutrition and training fundamentals, some sports medicine physicians will consider creatine supplementation reasonable. Others will advise waiting until 16 or 18, not because of strong evidence of risk, but because they prefer the precautionary approach given the data gaps. Neither position is unreasonable given the current evidence.

A conversation with a pediatrician or sports medicine doctor is particularly valuable because they can assess things no article can: the teen’s overall health, kidney function, hydration habits, training maturity, and psychological relationship with body image and performance. They can also help navigate the supplement-quality issue by recommending specific certified products. For teens with certain medical conditions, particularly neuromuscular diseases, creatine may actually be part of a treatment plan, but that is a clinical decision supervised by a specialist.

What a 14-year-old’s parent can reasonably take away from the evidence is this: creatine monohydrate is not the dangerous substance it is sometimes portrayed as, and decades of adult research have built a reassuring safety profile. But the adolescent-specific science remains genuinely sparse, the performance benefits in young athletes are inconsistent, and the practical risks of buying unregulated supplements add a layer of concern that has nothing to do with the molecule itself. The decision is not black-and-white, and anyone telling you it is has picked a side the evidence does not fully support.