Vitamin deficiency - Wikipedia
https://en.wikipedia.org/wiki/Vitamin_deficiencyVitamin deficiency is the condition of a long-term lack of a vitamin. When caused by not enough vitamin intake it is classified as a primary deficiency, whereas when due to an underlying disorder such as malabsorption it is called a secondary deficiency. An underlying disorder may be metabolic – as in a genetic defect for converting tryptophan to niacin – or from lifestyle choices that increase vitamin needs, such as smoking or drinking alcohol. Government guidelines on vitamin deficienci…
Vitamin A - Health Professional Fact Sheet
ods.od.nih.gov › factsheets › VitaminA-HealthIn developing countries, vitamin A deficiency typically begins during infancy, when infants do not receive adequate supplies of colostrum or breast milk . Chronic diarrhea also leads to excessive loss of vitamin A in young children, and vitamin A deficiency increases the risk of diarrhea [5,13]. The most common symptom of vitamin A deficiency in young children and pregnant women is xerophthalmia.
Vitamin A Deficiency - PubMed
pubmed.ncbi.nlm.nih.gov › 33620821Vitamin A is a fat-soluble vitamin essential in cell development, metabolism, immune competency, vision, and reproductive functions. Vitamin A deficiency (VAD) is a highly prevalent health concern associated with substantial morbidity and mortality, mostly affecting young children in impoverished regions throughout the world.
Vitamin A Deficiency - Causes, Symptoms, Diseases
byjus.com › biology › vitamin-a-deficiencyWhat is Vitamin A? Nuts. Eggs. Fish. Liver. Beet Greens. Fortified Margarine. Green leafy vegetables. Dairy products (cheese, milk, butter) Green and ripe yellow colored fruits (mangoes, banana, watermelon, etc.) Dark and yellow colored vegetables (Carrots, Pumpkin, Sweet Potatoes,etc.)