An Evidence-Based Review of Vitamin D for Common and High-Mortality Conditions

Area of Science:

• Endocrinology and Nutritional Science
• Primary Care Medicine

Background:

• Vitamin D, a fat-soluble vitamin, functions hormonally with widespread receptor presence.
• Low vitamin D levels are linked to numerous health conditions, prompting investigation into its role in primary care.

Approach:

• A comprehensive literature review was conducted, analyzing randomized controlled trials, meta-analyses, systematic reviews, and large prospective trials.
• The review focused on vitamin D's role in common primary care conditions and major mortality causes since 2010.

Key Points:

• Supplementation did not reduce cardiovascular events or aid hypertension/cancer prevention.
• Emerging evidence suggests reduced COVID-19 severity and mechanical ventilation risk.
• Moderate vitamin D levels may decrease fall risk, while higher doses might increase it.
• Benefits observed in major depression, fibromyalgia pain, prediabetes progression, and atopic dermatitis symptoms.

Conclusions:

• Prospective studies indicate variable outcomes, suggesting correlation rather than causation between low vitamin D and disease.
• Further research is essential to establish optimal vitamin D dosing and timing for treatment and prevention.