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Multiple Sclerosis treatment not helped by small doses of vitamin D (yet again) – meta-analysis Jan 2024


Vitamin D3 as an add-on treatment for multiple sclerosis: A systematic review and meta-analysis of randomized controlled trials

Mult Scler Relat Disord . 2024 Jan 6:82:105433. doi: 10.1016/j.msard.2024.105433 PDF I behind a paywall
João Vitor Mahler 1, Marina Solti 2, Samira Luísa Apóstolos-Pereira 3, Tarso Adoni 3, Guilherme Diogo Silva 3, Dagoberto Callegaro 3

Background: Vitamin D deficiency has been linked to a higher risk of multiple sclerosis (MS) and disease progression. However, the efficacy of vitamin D3 as an adjuvant therapy for MS remains a controversial topic.

Objective: To perform a systematic review and meta-analysis of randomized controlled trials to assess the impact of adjunct high-dose vitamin D3 on clinical and radiological outcomes.

Methods: PubMed, Embase, and Cochrane Library were searched for trials published until December 18th, 2022. Authors independently selected randomized controlled trials involving patients with MS, with an intervention group receiving high dose (≥ 1000 IU/day) cholecalciferol and reporting clinical or radiological outcomes. Authors independently extracted data and assessed the risk of bias using a standardized, pilot-tested form. The meta-analysis was conducted using RStudio for EDSS at the last follow-up, ARR, and new T2 lesion count.

Results: We included 9 studies with 867 participants. No significant reduction of EDSS (MD = 0.02, CI 95 % [-0.37; 0.41], p = 0.91), ARR (MD -0.03, CI 95 % [-0.08; 0.02], p = 0.26), or new T2 lesions (MD -0.59, CI 95 % [-1.24;0.07], p = 0.08) was observed at 6-24 months. We found no evidence of publication bias.

Conclusion: The findings of this meta-analysis strengthen current evidence that vitamin D3 supplementation has no significant impact on clinical outcomes in patients with MS. However, the non-significant reduction of new T2 lesions could precede long-term clinical benefits and should be validated in additional studies.


Vitamin D Life - 18 studies in both categories Multiple Sclerosis and Intervention

This list is automatically updated


Vitamin D Life - 14 studies in both categories Multiple Sclerosis and Meta-analysis

This list is automatically updated


Vitamin D Life – Multiple Sclerosis 32 percent less likely among those with more than 32 ng of vitamin D – Dec 2019

UV and Sunshine reduces MS risk

Other things also help

High Dose Vitamin D and cofactors

Number of MS studies which are also in other categories

  • 22 studies in Genetics - genes can restrict Vitamin D getting to the blood and to the cells
  • 12 studies in Vitamin D Receptor - gene which restricts D from getting to the cells
  • 7 studies in Vitamin D Binding Protein - gene which restricts D from getting to the cells
  • 21 studies in Ultraviolet light - may be even better than Vitamin D in preventing and treating MS
  • 9 studies in Omega-3 - which helps Vitamin D prevent and treat MS