Why Vitamin D Matters in MS
Large observational cohorts, Mendelian-randomization genetics, and post-hoc analyses of phase‑3 trials link low 25(OH)D to higher MS risk and MRI activity. This practical, nontechnical summary for naturopathic and holistic clinicians reviews evidence, sensible target ranges, safe dosing approaches, monitoring, and how to integrate vitamin D into prevention and supportive care.