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In this episode, Brodie explores the latest research on vitamin D and its role in tendon health, diving into a 2024 comprehensive review that examines both cell-based and animal studies. You’ll learn how vitamin D influences tendon healing, inflammation, and collagen production—and how low levels could delay your recovery. Plus, Brodie shares practical advice on vitamin D testing, optimal levels, sun exposure, supplementation, and the potential role of vitamin K2.

🧠 What You'll Learn:

• How tendons respond to training and stress via collagen synthesis
• Why vitamin D is like a “site manager” during tendon repair
• The difference between in vitro (lab) and in vivo (animal) studies
• What research shows about vitamin D deficiency and tendon healing
• The importance of maintaining adequate vitamin D levels (and what’s considered optimal)
• Whether supplementation is necessary—and how to combine it with vitamin K2

🧪 Research Highlight:

Study: Exploring the Impact of Vitamin D on Tendon Health: A Comprehensive Review (2024)

• 14 studies analyzed: 5 in vitro, 9 in vivo (mostly animal models)
• Key takeaway: Vitamin D deficiency may impair tendon healing and increase re-injury risk

🛠️ Practical Takeaways:

• Ask your GP for a 25-hydroxyvitamin D blood test
• Aim for blood levels between 75–125 nmol/L for optimal musculoskeletal health
• Get sun exposure for 10–30 mins/day (arms and legs, mid-morning or afternoon)
• Include dietary sources like fatty fish, egg yolks, and fortified foods
• Supplement with 1,000–2,000 IU/day if needed; higher doses may require supervision
• If supplementing long-term, consider pairing vitamin D with vitamin K2 to support bone health and calcium balance

🎯 Ideal For:

• Runners and athletes recovering from tendinopathy
• People looking to optimize tendon repair and performance
• Anyone curious about the role of micronutrients in injury recovery

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MEDICAL & EDUCATIONAL DISCLAIMER

The information provided in the Overcoming Proximal Hamstring Tendinopathy (PHT) Podcast, YouTube channel, associated websites, social media, and other educational content produced by Brodie Sharpe is provided for general educational and informational purposes only. It is not intended to constitute, and should not be relied upon as, individual medical, physiotherapy, diagnostic or treatment advice.

Although Brodie Sharpe is a qualified physiotherapist, consuming this content does not establish a physiotherapist-patient or other healthcare professional-patient relationship. Any discussion of symptoms, diagnoses, rehabilitation strategies, exercises, loading programs, running modification, medications, supplements, injections, medical procedures or other treatment options is general in nature and may not be appropriate for your individual circumstances.

Musculoskeletal pain can have multiple causes, and symptoms that appear consistent with proximal hamstring tendinopathy or another tendon disorder may arise from other conditions. Appropriate assessment, diagnosis and treatment depend upon an individual's medical history, symptoms, examination findings, medications, health conditions, training history and other factors that cannot be adequately assessed through general online content.

Do not use this content as a substitute for assessment, diagnosis or treatment from an appropriately qualified healthcare professional. 

Before starting, stopping or substantially modifying an exercise or rehabilitation program, medication, supplement, injection, procedure or other treatment discussed in this content, seek advice from an appropriately qualified healthcare professional who can consider your individual circumstances.

Exercise, rehabilitation and medical treatments carry inherent risks. These may include increased pain, symptom flare-ups, aggravation of an existing condition, new injury, adverse reactions or other complications. Individual responses vary and no particular outcome, improvement, recovery timeframe or return to sport can be guaranteed. If an activity or intervention causes significant, unusual or worsening symptoms, stop and seek appropriate professional advice.

References to research, clinical studies, treatment approaches, products or opinions of guests are provided for educational purposes. Scientific evidence evolves over time, may be incomplete or conflicting, and findings from research populations may not apply to every individual. Discussion of a treatment or product does not necessarily constitute an endorsement or recommendation for its use. Views expressed by podcast guests or other contributors are their own and do not necessarily represent the views of Brodie Sharpe.

To the extent permitted by applicable law, Brodie Sharpe and associated businesses, contractors and contributors accept no liability for loss, injury, damage or adverse outcomes arising from reliance upon or use of this general educational content. Nothing in this disclaimer is intended to exclude, restrict or modify any right, guarantee, remedy or liability that cannot lawfully be excluded, restricted or modified under applicable law.

If you believe you may have a serious injury or medical condition, or you develop severe, rapidly worsening or otherwise concerning symptoms, seek prompt assessment from an appropriately qualified healthcare professional. In an emergency, contact your local emergency service.