Vitamin D and Chronic Pain Management
Summary
Vitamin D, primarily synthesised in the skin through sunlight exposure, has emerged as a potential modulator of chronic pain pathways. Beyond its classical role in calcium homeostasis and bone health, vitamin D influences nociceptive and inflammatory processes via the regulation of cytokine production and neuroimmune interactions. Observational data have linked low serum 25-hydroxyvitamin D levels to higher pain intensity and increased analgesic requirements. Mechanistically, vitamin D may attenuate pain by downregulating pro-inflammatory cytokines such as interleukin-6 and inhibiting prostaglandin E2 synthesis, while promoting nerve growth factor expression and modulating calcium channels in sensory neurons. Clinical interest has focused on whether correcting vitamin D insufficiency can alleviate musculoskeletal pain, improve functional outcomes and reduce reliance on opioids or non-steroidal anti-inflammatory drugs. However, heterogeneity in study populations, baseline vitamin D status and outcome measures has led to mixed results, highlighting the need to define subgroups most likely to benefit and to standardise supplementation protocols in chronic pain management.
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Vitamin D and Chronic Pain Management publication trend
The graph below shows the total number of articles in vitamin d and chronic pain management across all publications each year (not limited to Nature Index journals).
Technical terms
25-hydroxyvitamin D (25(OH)D): The main circulating form of vitamin D used to assess nutritional status.
Mendelian randomisation: A genetic epidemiology method that uses inherited variants to infer causal relationships between an exposure and an outcome.
Randomized controlled trial (RCT): An experimental study in which participants are randomly assigned to intervention or control groups to evaluate efficacy.
Visual analogue scale (VAS): A psychometric response scale for quantifying pain intensity, typically a 10 cm line anchored by no pain and worst pain imaginable.
References
- Vitamin D in Pain Management. International Journal of Molecular Sciences (2017).
- Causal effect of serum 25-hydroxyvitamin D levels on low back pain: A two-sample mendelian randomization study. Frontiers in Genetics (2022).
- The effect of vitamin D supplementation on pain: an analysis of data from the D-Health randomised controlled trial. British Journal Of Nutrition (2022).
- A PROSPECTIVE COMPARATIVE STUDY ON EFFICACY OF ORAL VITAMIN D FORMULATIONS IN PATIENTS WITH CHRONIC LOW BACK PAIN WITH VITAMIN D DEFICIENCY AT A TERTIARY CARE HOSPITAL. International Journal of Current Pharmaceutical Research (2024).
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