Creatine Actually Works — But You Probably Don’t Need a Supplement to Get It

Here’s the thing about creatine — it’s not some sketchy gym-bro powder with mystery ingredients. It’s one of the most studied substances in all of sports science, and researchers have been looking at it for decades. According to the International Society of Sports Nutrition, creatine monohydrate is actually the most effective nutritional supplement currently available for increasing high-intensity exercise capacity and building lean muscle during training. That’s a strong statement from a serious organization.

And the safety question — especially for younger people — has been looked at too. Research published on PubMed Central found that, based on limited available evidence, creatine supplementation appears safe and potentially beneficial for children and adolescents. So current research doesn’t suggest it will harm a teenager’s development — but scientists are careful to note the evidence is still limited.

But here’s where it gets interesting. Your body already makes creatine — and you get it naturally from foods like red meat and fish. A lot of the performance boost people credit to creatine supplements may partly reflect a diet that was already low in these nutrients. If you’re barely eating enough protein and sleeping four hours a night, no supplement is going to fix that.

One more honest thing worth knowing: while short-term use looks safe, researchers note that long-term safety cannot be fully guaranteed across all populations, including young people. That’s not a scare — it’s just science being honest about what it does and doesn’t know yet.

Bottom line: if you’re a teenager trying to get stronger or perform better, current evidence suggests creatine isn’t dangerous and does work. But getting your sleep, eating real food, and actually training consistently will get you most of the way there first.