Nutrients | Free Full-Text | Vitamin D Dosing: Basic Principles and a Brief Algorithm (2021 Update)
Schwartz JB et al. 2016; Response of vitamin D concentration to vitamin D3 administration in older adults without sun exposure: A randomized double-blind trial; J. Am. Geriatr. Soc. 64(1):65-72 - HEYL
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Vitamin D: 15 ng/mL
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HealthMatch - 42% Of Americans Are Deficient In Vitamin D. Are You At Risk? If So, What Can You Do About It?
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File:Vitamin D serum levels in adults world map.svg - Wikipedia
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Vitamin D – RefHelp
2024 Vitamin D Deficiency Statistics of UK Adults
Vitamin D Deficiency: Causes, Symptoms & Treatment
Vitamin D Deficiency – GP Gateway
As Children and Teens Age, Vitamin D Levels Decrease - GrassrootsHealth
Normal vitamin D levels by age, sources, and toxicity
Vitamin D levels in relation to Age and Gender. | Download Table
The Practice of Vitamin D Deficiency Assessment in a Geriatric Day Hospital. – Irish Medical Journal
Vitamin D: What's the "right" level? - Harvard Health
