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[The role of vitamin D in the pathogenesis and course of multiple sclerosis]
Abstract:
Multiple sclerosis (MS) is a progressive, inflammatory demyelinating disease of the central nervous system, with an unknown aetiology. The pathogenesis of MS is mainly related with the autoimmune process, environmental factors and genetic predispositions. In recentyears, hypovitaminosis D has been considered as an independent factor increasing the risk of multiple sclerosis. Hypovitaminosis D is defined as a condition in which the concentration of 25(OH)D in serum is lower than 75 nmol/l (30 ng/ml). Numerous studies have documented the relation between the occurrence of MS, its course and activity, and vitamin D concentration dependent on sunlight and dietary intake. Conclusions from research on the effectiveness of supplementation have also been presented. They indicate the necessity of using higher doses of calcitriol. Most authors consider a preventive dose of 4000 IU daily as safe and well-tolerated by people living in low-insolation latitudes. It has been pointed out that vitamin D supplementation is indicated and effective only in cases of actual deficiency. The low risk and low cost of vitamin D supplementation, as well as patients' positive attitude towards it, makes it a promising strategy for decreasing the incidence and alleviating the signs and symptoms of multiple sclerosis.
Insights
Vitamin D deficiency (hypovitaminosis D) is linked to increased multiple sclerosis (MS) risk. Supplementation, particularly higher doses, may help manage MS symptoms and reduce incidence, especially in deficient individuals.
Area of Science:
- Neurology
- Immunology
- Endocrinology
Context:
- Multiple sclerosis (MS) is a central nervous system inflammatory demyelinating disease with complex etiology.
- Hypovitaminosis D, defined as serum 25(OH)D < 75 nmol/l, is increasingly recognized as a risk factor for MS.
- Research links vitamin D levels to MS occurrence, progression, and activity.
Purpose:
- To review the relationship between vitamin D status and multiple sclerosis.
- To evaluate the effectiveness of vitamin D supplementation in MS management.
- To assess the safety and optimal dosage of vitamin D for MS prevention and treatment.
Summary:
- Numerous studies correlate vitamin D concentration with MS incidence, course, and activity.
- Evidence suggests higher calcitriol doses may be necessary for effective supplementation in MS.
- Vitamin D supplementation is most effective when addressing actual deficiency and is considered safe at preventive doses (e.g., 4000 IU daily).
Impact:
- Vitamin D supplementation presents a low-risk, low-cost strategy for potentially decreasing MS incidence.
- Addressing hypovitaminosis D may alleviate signs and symptoms of multiple sclerosis.
- Patient acceptance of vitamin D supplementation makes it a promising therapeutic avenue.
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