Vitamin D and muscle.

Area of Science:

• Endocrinology
• Neurology
• Geriatrics

Background:

• Vitamin D plays a crucial role in normal muscle function.
• Low vitamin D levels are associated with increased risk of falls and proximal muscle weakness.
• Vitamin D deficiency is prevalent and often presents with non-specific symptoms like muscle pain.

Purpose of the Study:

• To highlight the importance of suspecting vitamin D deficiency in patients with muscle complaints.
• To review clinical evidence on vitamin D's effects on physical performance, muscle strength, and fall risk.
• To discuss the molecular mechanisms underlying vitamin D's action on muscles.

Main Methods:

• Review of clinical studies and case reports on vitamin D and muscle function.
• Analysis of molecular pathways involved in vitamin D's effects on skeletal muscle.
• Discussion of diagnostic and therapeutic strategies for vitamin D deficiency.

Main Results:

• Severe vitamin D deficiency can cause significant muscle defects.
• Vitamin D supplementation improves physical performance, muscle strength, and reduces fall risk.
• Serum 25(OH) vitamin D measurement is a simple and effective diagnostic tool.

Conclusions:

• Maintaining adequate vitamin D levels is essential for optimal muscle health and function.
• Healthcare providers should maintain a high index of suspicion for vitamin D deficiency in patients with muscle weakness.
• Prompt and appropriate vitamin D therapy is safe, effective, and cost-efficient.