[HTML][HTML] Vitamin A: biomarkers of nutrition for development

SA Tanumihardjo - The American journal of clinical nutrition, 2011 - Elsevier
Vitamin A is essential for multiple functions in mammals. Without vitamin A, mammals cannot
grow, reproduce, or fight off disease. Because of its numerous functions in humans,
biomarkers of vitamin A status are quite diverse. Assessment of liver reserves of vitamin A is
considered the gold standard because the liver is the major storage organ. However, this
measure is not feasible in human studies. Alternative biomarkers of status can be classified
as biological, functional, histologic, and biochemical. Historically, signs of xerophthalmia …