Variability in response to vitamin D supplementation according to vitamin D metabolism related gene polymorphisms in healthy adults | European Journal of Clinical Nutrition
Vitamin D Supplements Don't Help Another Condition, Study Finds - The New York Times
Vitamin D3 seems more appropriate than D2 to sustain adequate levels of 25OHD: a pharmacokinetic approach | European Journal of Clinical Nutrition
The Body Needs All Forms of Vitamin D - GrassrootsHealth
Vitamin D Supplement Reviews & Top Picks - ConsumerLab.com
If You Aren't Taking Your Vitamin D Daily – Then It May Not Be Working - GrassrootsHealth
Diagnosis and Management of Vitamin D Deficiency for Non ...
Half-life of vitamin D varies | VitaminDWiki
Half-life of vitamin D varies | VitaminDWiki
Vitamin D Recommendations Infographic | NutritionFacts.org