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Prevalence of vitamin A deficiency, 1995-2005. Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. [1] It is common in poorer countries, especially among children and women of reproductive age, but is rarely seen in more developed countries. [1]
For example, in the United States of America, one out of every six children is at risk of hunger. [ citation needed ] A study, based on 2005–2007 data from the U.S. Census Bureau and the Agriculture Department , shows that an estimated 3.5 million children under the age of five are at risk of hunger in the United States .
The causes are vitamin A deficiency during pregnancy, followed by low transfer of vitamin A during lactation and infant/child diets low in vitamin A or β-carotene. [ 22 ] [ 19 ] The prevalence of pre-school age children who are blind due to vitamin A deficiency is lower than expected from incidence of new cases only because childhood vitamin A ...
Vitamin A deficiency affects one third of children under age 5 around the world, [33] leading to 670,000 deaths and 250,000–500,000 cases of blindness. [34] Vitamin A supplementation has been shown to reduce all-cause mortality by 12 to 24%. [35]
Common micronutrient deficiencies are iron, zinc, iodine, and vitamin A. Micronutrient deficiencies can cause an increase of illness due to a compromised immune systems or abnormal physiology and development. [9] Protein-Energy Malnutrition (PEM) is another form of malnutrition that affects children.
Clinical vitamin A deficiency is particularly common among pregnant women, with prevalence rates as high as 9.8% in South-East Asia. [ 120 ] Estimates say that 28.5% of the global population is iodine deficient, representing 1.88 billion individuals. [ 124 ]
800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: ... as many as 43 percent of older adults have vitamin B12 deficiency. Symptoms of insufficient ...
Its partnership with the GOB began in 1982. The Bangladesh Nutritional Blindness Study was conducted, and it indicated that there was a high prevalence of vitamin A deficiency. By 2005, vitamin A deficiency among children 12 to 59 months, as measured by prevalence of night blindness, has decreased to 0.04% from 3.76% in 1982. [11]