Who Should Use Creatine? Myths vs. Scientific Facts Explained

Creatine is a popular supplement among athletes and fitness enthusiasts, but confusion remains about who should use it. This article explores the scientific evidence behind creatine and clarifies common misconceptions surrounding its benefits and potential risks.

Creatine: Myths, Facts, and Scientific Reality

Despite its widespread popularity in the realm of dietary supplements, creatine continues to be shrouded in controversy and misconceptions. For years, it has drawn both enthusiastic supporters and cautious skeptics—many of whom cite persistent rumors about its possible side effects.

The Renal Risk Debate

One of the most tenacious concerns revolves around alleged dangers to the kidneys. Many fear that supplementing with creatine monohydrate could cause harm by raising blood levels of creatinine, a marker often linked to renal impairment. However, two substantial systematic reviews, released in 2019 and 2025 respectively, have brought clarity. Both concluded that, among healthy individuals or those receiving proper medical supervision, there is no significant alteration in glomerular filtration rate—a key indicator of kidney function. Even clinical trials involving elderly patients with Parkinson’s disease failed to demonstrate any lasting negative impact on renal health.

Debunking Hydration and Muscle Cramp Myths

Equally persistent is the belief that creatine induces dehydration or muscle cramps—especially among athletes training in hot environments. Yet comprehensive field studies, synthesized in major international reviews, contradict this perception. When consumed according to recommended dosages, there is no substantial evidence pointing to an increased risk of either dehydration or cramps. In fact, some users even report fewer cramps and better heat tolerance during strenuous physical activity.

A Supplement Beyond Bodybuilding

While creatine was once mainly associated with male weightlifters and pure performance enhancement, research now highlights its broader benefits. Its positive effects are not limited to the world of bodybuilding; women engaged in regular physical activity, older adults, and those recovering from injuries may also see improvements in lean body mass and functional performance. Emerging research is even exploring potential roles for creatine in combating brain aging and certain chronic conditions.

Nevertheless, a degree of caution remains advisable. Several factors explain this recommendation:

• Pre-existing kidney disease or heavy medical treatments;
• Pregnancy or breastfeeding;
• Medications affecting renal function.

Overall, despite lingering doubts within some quarters, current science offers reassurance: when used responsibly within established guidelines, creatine monohydrate stands as both a safe and effective supplement for a wide range of people.