Creatine Hype Meets New Science: What It Really Does

Creatine is having a moment. The white powder that once lived in bodybuilding gyms now shows up in morning routines, smoothie recipes and wellness content aimed squarely at women in their twenties. Search interest keeps climbing, and supplement brands have noticed: supplement gummies and flavored powders now sit next to the protein bars at every checkout.

The pitch is simple — more muscle, more energy, maybe even a sharper brain — and the newest research gives believers a genuine talking point. A twelve-week trial at Texas A&M University, published in the Journal of the International Society of Sports Nutrition, found that sedentary adults who took the supplement without joining an exercise program still gained lean tissue and strength. But the same study comes with caveats that rarely make it into the thirty-second version.

What the New Creatine Study Actually Tested

The researchers recruited seventy-three healthy, sedentary adults between forty-five and sixty-five. Before supplementation began, each participant chose whether to keep living as usual or join a structured program of resistance training, aerobic exercise and modest calorie restriction. Within each group, people were then randomly assigned, under double-blind conditions, to creatine monohydrate or a maltodextrin placebo, according to ZME Science's reporting on the trial.

The supplement group took ten grams a day, split between morning and evening — roughly double the usual maintenance dose of three to five grams. Researchers scanned body composition with DXA, tested leg-press and bench-press strength, and ran cognitive tests at the start, the midpoint and the end of the twelve weeks.

The headline result: the no-exercise supplement group gained about 1.1 kilograms of DXA-measured lean tissue, and improved on measures of strength and muscular endurance. The researchers also recorded gains in memory and cognitive processing, though the pattern was uneven — several tests of attention and working memory showed no improvement.

The lead author's takeaway was measured. “Of course, you get better effects with training,” study author Richard Kreider, director of Texas A&M's Exercise and Sport Nutrition Lab, told Health. “But anybody can take creatine and get some benefit.”

The Catches the Creatine Hype Leaves Out

The first catch is what a DXA scan actually measures. The supplement draws water into muscle cells, and the scan cannot distinguish newly built muscle protein from extra water. Most of that roughly one-kilogram gain was probably water rather than new muscle — a limitation the researchers themselves acknowledge.

The second catch is size. Only thirteen people finished the no-exercise arm, and participants chose their own exercise group instead of being randomly assigned to it, which introduces selection bias. The trial ran for just twelve weeks and used a daily dose well above the standard maintenance amount.

A third catch is funding context. Kreider has conducted industry-sponsored research on the supplement and sits on scientific advisory boards, including one for AlzChem, a company that manufactures creatine monohydrate. Disclosure does not invalidate the results, but it belongs in the fine print of any viral claim, as ZME Science notes.

What the Rest of the Science Says About Creatine

Not every trial has flattered the supplement. A trial led by researchers at UNSW put fifty-four adults through a twelve-week resistance program and found no difference in lean-mass gains between those taking the standard five-gram dose and those taking a placebo — both groups added roughly two kilograms of lean tissue from training alone. “The benefits of creatine may have been overestimated in the past, due to methodological problems with previous studies,” senior author Dr. Mandy Hagstrom said, as reported by Medical Xpress.

Broader reviews land somewhere in the middle. A 2025 meta-analysis of sixty-one trials found that the supplement increased fat-free mass when combined with resistance training. And a recent meta-analysis of seven randomized trials covering six hundred eight postmenopausal women found small average gains — under half a kilogram of lean mass and about seven and a half kilograms on the leg press — with the clearest benefits appearing only when the supplement was paired with regular training at doses of at least five grams a day.

On the brain-health claims, the evidence is thinner. A 2024 meta-analysis of sixteen randomized trials found modest benefits for memory, attention and processing speed but no significant improvement in overall cognition — and a European Food Safety Authority review concluded the evidence did not establish a cause-and-effect relationship between creatine and better cognitive function.

Creatine and Teens: The Part Nobody Mentions

Meanwhile, the people most enthusiastically buying the supplement are the least studied. Creatine use among American teenagers has doubled in five years, according to Medical Daily — and the safety research for adolescents is still nearly nonexistent.

Pediatric experts are blunt about the gap. Orlando Health's Arnold Palmer Hospital for Children notes there is virtually no scientific evidence assessing the supplement's safety or effectiveness in adolescents, with scattered reports of kidney strain, dehydration and cramps. A January case report in the journal Cureus described a teenager whose supplement use complicated doctors' assessment of an acute kidney injury, because the supplement itself elevates serum creatinine — the standard kidney marker — without any actual kidney damage.

What This Means for Your Supplement Shelf

None of this makes creatine a scam. It remains the most studied supplement in sports nutrition, with a strong safety record in healthy adults and solid evidence that it modestly amplifies the gains from resistance training. What the research does not support is the shortcut narrative: no trial suggests the powder replaces progressive training, adequate protein or sleep. What the evidence does support, consistently, is movement itself — even brief movement breaks add up over the course of a day.

If you are considering it, the evidence-backed version of the habit is boring: a small daily dose of plain creatine monohydrate, consistent resistance training, and a conversation with a clinician first if you are under eighteen, pregnant, or managing a kidney condition.

The supplement industry sells certainty; the science sells footnotes. Creatine works — just not the way the algorithm says it does. For more stories that separate wellness hype from evidence, browse our Mind & Body coverage.