Creatine is best known for supporting muscle strength and energy, but new research suggests it may also benefit the vascular system as we age. A pilot study published in Nutrients examined whether creatine monohydrate could improve blood vessel function in older adults. The results point to a promising new role for a supplement many people already use for muscle health.

What the Study Looked At

Researchers recruited older adults and gave them creatine monohydrate daily for several weeks. Instead of focusing on muscle performance, the study measured two important aspects of vascular health:

• Macrovascular function — how well large blood vessels relax and widen
• Microvascular function — how well tiny blood vessels deliver oxygen and nutrients to tissues

These measures are important because vascular aging contributes to fatigue, slower recovery, reduced mobility, and higher cardiovascular risk.

Key Findings

1. Microvascular Function Improved

The most notable result was a significant improvement in microvascular endothelial function. This means the smallest blood vessels became better at regulating blood flow — a key factor in healthy aging.

Improved microcirculation may help:

• deliver oxygen to muscles more efficiently
• support better exercise tolerance
• enhance recovery after activity
• maintain tissue health with age

2. Macrovascular Function Did Not Change

Larger blood vessels did not show measurable improvement in this short pilot study. The researchers note that longer supplementation or larger sample sizes may be needed to detect changes.

3. Creatine Was Well Tolerated

Participants tolerated creatine without major side effects, consistent with its long safety record in older adults.

Why This Matters for Adults Over 60

Healthy blood flow is essential for:

• muscle strength and mobility
• brain health and cognition
• energy levels
• heart and metabolic health

As we age, the lining of our blood vessels — the endothelium — becomes less responsive. This contributes to stiffness, slower circulation, and reduced exercise capacity. The study suggests creatine may help support the smallest vessels, which play a major role in nutrient delivery and tissue repair.

How Creatine Might Help

Creatine increases the availability of cellular energy (ATP), which endothelial cells rely on to regulate blood flow. By improving energy supply, creatine may help these cells function more effectively.

Practical Takeaways

• This was a pilot study, so results are early but encouraging.
• Creatine may support microvascular health in addition to muscle strength.
• Older adults may benefit from creatine for both mobility and circulation.
• Typical research doses are around 3–5 g/day, but individuals should consult a clinician.

While more research is needed, creatine continues to show promise as a simple, well‑studied supplement that may support multiple aspects of healthy aging.

Watch: Does Creatine Impact Cardiovascular Health?

Dr. Ford Brewer discusses the relationship between creatine and cardiovascular inflammation markers like hs-CRP. While often used for muscle building, emerging research suggests creatine may be neutral or even beneficial for the vascular system by supporting endothelial health.

Reference

The full study is available here: Effect of Creatine Supplementation on Endothelial Function in Older Adults