Creatine for Healthcare Workers: Can It Help Support Mental Performance During Long Shifts?

Most people think of creatine as a supplement for athletes, but emerging research suggests it may also play a role in supporting the brain during periods of metabolic stress.

Research suggests creatine may actually benefit those who are more mentally fatigued at baseline, such as shift workers—for example, healthcare workers including physician assistants, nurses, and especially resident physicians. When you take into account switching back and forth from night shifts, sleep deprivation from transitioning between days and nights, endless charting, and the implications of missing one small detail, performing at your very best every single day in such a demanding profession is imperative.

So What Happens to Our Brains During Long Shifts?

Our brains use a large amount of ATP, which is essentially energy at the cellular level. When you're on that fourth night shift out of five, your cognitive function and decision-making capacity have significantly declined because, let's face it, you're exhausted.

This cognitive decline can lead to decreased working memory, slower reaction time, reduced attention, and overall less efficient decision-making. This is a routine stressor across many professions, but especially in the healthcare field.

What Is Creatine?

Creatine is a naturally occurring substance that is stored primarily in muscle but also in smaller amounts in the brain. In short, this compound helps recycle ATP stores in our bodies and is mainly present in high-energy-demand tissues.

Why Is Everyone Talking So Much About Creatine?

Researchers are studying creatine more than ever before—not only for neurodegenerative disorders, but also for mental fatigue, sleep deprivation, and healthy aging. The potential cognitive benefits of creatine appear to be more pronounced when the brain is under metabolic stress rather than in well-rested, healthy adults.¹

The Sleep Deprivation Study Everyone Is Talking About

A 2024 study looked at sleep-deprived adults.

In this randomized, placebo-controlled trial, 15 healthy adults were required to stay awake for 21 hours. Participants received a single high dose of creatine, and researchers evaluated brain energy metabolism using MRI spectroscopy along with cognitive testing.

The main limitations of the study are that it included only 15 participants and used extremely high doses of creatine, with subjects receiving more than 15 grams.² It is also important to remember that these participants were not healthcare workers, and this study does not mean everyone should take a large dose of creatine before every night shift.

But What About the Standard 3-5 Gram Daily Dose?

Current evidence supports 3 to 5 grams of creatine daily for muscle creatine saturation. The safety profile is excellent in healthy individuals, and this has been demonstrated over months to years of supplementation.

Research is ongoing to determine whether standard daily doses provide meaningful cognitive benefits for healthcare workers specifically.

So Who Might Benefit the Most?

The common thread among these professions is rotating schedules, long shifts, sleep disruption, and mentally demanding work.

What Creatine Will Not Do

Instead, think of creatine as one tool that may help support brain energy during periods of high metabolic demand. It is not, once again, a substitute for sleep or recovery.

Practical Takeaways

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