Collagen for Female Runners: New Research Shows Benefits for Bone Health and Recovery
TL;DR: A 2026 clinical trial found collagen peptide supplementation increased a marker of bone formation & reduced a marker of inflammation in female distance runners. The findings suggest collagen may help support bone health, recovery and resilience in women who run regularly.
Every Run Stresses Your Bones
Running is one of the best forms of exercise for cardiovascular fitness, mental health and longevity.
But every foot strike also places significant force through your feet, ankles, shins, knees and hips. Some studies show this force is 2.5 to 3 times your body weight.
Normally, your body repairs this tiny damage and comes back stronger.
However, when training volume increases, recovery is inadequate or nutrition falls short, that balance can shift.
For female runners especially, maintaining healthy bones is essential for reducing the risk of stress fractures and staying injury-free over the long term.
That's why researchers have been exploring whether collagen supplementation can support the body's natural repair processes.
A new randomised clinical trial has provided some encouraging answers.
Why Female Runners Are at Higher Risk
Research consistently shows female distance runners experience higher rates of bone stress injuries than men.
Several factors contribute, including:
- Low energy availability from under-fuelling
- Hormonal fluctuations
- Increased inflammatory stress from heavy training
When bone breakdown starts occurring faster than bone repair, the risk of stress reactions and stress fractures increases.
The New Study
Researchers recruited 22 premenopausal female distance runners aged 18–35 years who were running at least 56 km per week.
Participants consumed either:
- 20 g of collagen protein powder daily, or
- a placebo,
for four weeks.
The researchers then measured several markers related to bone formation and inflammation.
What Did They Find?
The collagen group experienced several promising changes.
1. Increased Bone Formation
Women taking collagen showed a significant increase in P1NP, a marker associated with new collagen production and bone formation.
This suggests collagen supplementation may help stimulate the body's natural bone-building processes.
Although the study only lasted four weeks, this represents an encouraging early indicator that collagen may support skeletal adaptation to training.
2. Lower Inflammation
Researchers also observed a reduction in IL-6, an inflammatory marker often elevated after prolonged endurance training.
Managing excessive inflammation is important because chronic inflammation may interfere with recovery and bone remodelling.
Lower IL-6 may indicate collagen helps support recovery between training sessions.
3. Potential Support for Bone Remodelling
The study also found favourable changes in signalling involved in bone turnover.
While not every bone marker changed significantly, the overall pattern suggested collagen may help shift bone metabolism towards repair rather than breakdown.
This was a relatively small pilot study, so larger trials are still needed to confirm these findings.
Why This Matters Beyond Elite Athletes
You don't have to be running marathons every weekend to benefit from healthy connective tissue.
Collagen is the primary structural protein found in:
- bones
- tendons
- ligaments
- cartilage
- skin
Supporting collagen production becomes increasingly important with age, particularly for active women who want to keep running, exercising and staying mobile.
Whether you're training for your first 10 km or simply enjoy regular morning runs, protecting your joints and bones is a worthwhile long-term investment.
Collagen Works Best Alongside Good Nutrition
Collagen isn't a substitute for good nutrition.
Female runners should also ensure adequate intake of:
- protein
- calcium
- vitamin D
- magnesium
- overall energy
Under-fuelling remains one of the biggest risk factors for poor bone health in endurance athletes.
Collagen works best as part of an overall recovery and nutrition strategy.
Choose Quality Collagen
Not all collagen supplements are created equal.
When comparing products, consider:
- Hydrolysed collagen peptides for easy absorption
- No unnecessary fillers or artificial ingredients
- Transparent sourcing
- Independent testing
At Propel Health Australia, we believe quality matters just as much as the ingredient itself.
The Takeaway
This new study adds to the growing body of research supporting collagen supplementation for active women.
While larger and longer studies are still needed, four weeks of collagen supplementation increased a marker of bone formation and reduced an important inflammatory marker in female distance runners.
If you're a runner looking to support recovery, connective tissue and long-term bone health, collagen peptides may be a valuable addition to an overall nutrition plan.
The goal isn't simply to recover from today's run.
It's to keep you running well for years to come.
About the Author
Grant Jenkins is the founder of Propel Health Australia and a former high-performance coach with more than 25 years of experience in exercise physiology, sports nutrition and athlete development. He combines emerging scientific research with practical health education to help Australians better understand recovery, healthy ageing and evidence-based supplementation.
Reference
Kuhlman NM, Jagim AR, Blesso CN, et al. Effects of collagen peptide supplementation on bone turnover, cytokine, and inflammatory markers in female distance runners: a randomized pilot study. Frontiers in Nutrition. 2026.
Disclaimer
This article is for educational purposes only and is not intended to diagnose, treat, cure or prevent any disease. Always consult your healthcare practitioner before starting any new supplement or making significant changes to your nutrition or training program.
