Vitamin D in amyotrophic lateral sclerosis

Area of Science:

• Neurology
• Endocrinology
• Nutritional Science

Background:

• Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease.
• Vitamin D deficiency is common in chronic neurological conditions.
• Vitamin D supplementation is being investigated as a therapeutic strategy for ALS.

Purpose of the Study:

• To compare vitamin D blood levels in ALS patients versus healthy controls.
• To correlate vitamin D levels with clinical function in ALS patients.
• To assess the impact of vitamin D supplementation on ALS progression.

Main Methods:

• Retrospective analysis of 57 ALS patients and 57 healthy controls.
• Measurement of vitamin D blood levels.
• Evaluation of clinical parameters: Medical Research Council (MRC) scale, ALS functional rating scale-revised (ALSFRS-R), and forced vital capacity (FVC).
• Comparison between 24 vitamin D-treated ALS patients and untreated patients.

Main Results:

• No significant difference in vitamin D blood levels was observed between ALS patients (18.8 ± 12.2) and healthy subjects (20.7 ± 10.1).
• Vitamin D levels did not correlate with clinical parameters (ALSFRS-R, MRC, FVC) in ALS patients.
• No significant clinical differences were found between vitamin D-treated and untreated ALS patients over time.

Conclusions:

• Vitamin D blood levels are not significantly different between ALS patients and healthy individuals.
• Vitamin D supplementation did not demonstrate a benefit in slowing disease progression or improving clinical function in this ALS cohort.
• Further prospective, controlled studies are required to definitively establish the role of vitamin D in ALS management.