Creatine: Not Just for Bodybuilders - What the Latest Research Means for Your Health

If you’ve spent any time on fitness or wellness social media lately, you’ve probably seen creatine popping up everywhere. Once considered a supplement only for young athletes or bodybuilders, creatine is now being studied for broader health benefits including healthy aging, brain health, and long-term physical function. As physical therapist’s, we want to help you cut through the hype and understand what the science actually says. The good, the maybe, and the still unknown.

What Is Creatine and Why Do We Care?

Creatine is a naturally occurring compound stored primarily in muscle and used to produce energy (ATP) quickly during movement and exercise. It helps muscles perform short bursts of higher-intensity work and recover faster between efforts. Research consistently shows creatine can improve muscle strength, lean muscle mass, and exercise performance especially when combined with resistance training.

Creatine for Younger Adults

In younger adults, creatine, when paired with strength training, improves muscle strength and training performance. Early weight gain often reflects increased muscle water content, not fat, and may precede muscle growth. It’s important to remember: creatine works best when combined with progressive strength training and adequate protein.

Creatine for Older Adults - Where Things Get Really Interesting

Recent systematic reviews show creatine combined with exercise improves muscle strength, lean mass, and functional performance in older adults. Creatine plus resistance training may help counter age-related muscle loss (sarcopenia), improve functional capacity, and support independence. Emerging research also suggests creatine may support certain aspects of brain health. A 2024 meta-analysis found improvements in memory, attention, and processing speed in adults taking creatine. A 2026 systematic review further highlights creatine’s role in supporting aging muscle and possibly cognition, particularly when combined with resistance exercise. Creatine is not an anti-aging pill, but it may support health-span (how well you function as you age). By supporting cellular energy production, muscle maintenance, and potentially brain energy metabolism, creatine may help preserve function over time.

 Runners and Endurance Athletes

Creatine is not just an endurance supplement. It can also help with:

• Sprint finishes

• Hill work

• Strength training support

• Injury resilience through strength preservation

Some runners avoid creatine due to potential water weight gain, but low-dose daily strategies may reduce this effect.

Strength Training Clients

This group sees the most consistent benefits.

Creatine can help:

• Increase training volume

• Improve recovery between sets

• Support muscle growth and strength gains

• Maintain muscle during calorie deficits or aging.

  
  

What About Women?

Women may have lower baseline creatine stores, which may partly explain why some research shows strong responses in females. Creatine may support:

• Muscle strength

• Functional capacity

• Possibly cognitive performance

• Best paired with exercise

  
  

 Post-Menopausal Women

This may be one of the highest-benefit groups.

• Accelerated muscle loss occurs after menopause

• Strength is directly tied to fall prevention and independence

• May support brain energy metabolism

• Best paired with resistance training + protein intake

 Should You Take Creatine?

You might consider discussing creatine with your healthcare provider if you:

 ✔ Strength train or are starting strength training 

✔ Are over 40 and want to preserve muscle and function 

✔ Are post-menopausal and focused on bone + muscle health 

✔ Want support for high-intensity training or rehab performance 

✔ Eat little red meat or fish 

✔ Are focused on long-term functional aging

You may want to be cautious or speak with your provider first if you:

⚠ Have kidney disease or kidney risk factors ⚠ Are pregnant or breastfeeding ⚠ Take medications affecting kidney function ⚠ Have chronic dehydration or GI sensitivity