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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]
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 ...
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 .
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]
Vitamin B12 deficiency symptoms . Vitamin B12 deficiency has a few hallmark symptoms, according to doctors: Lack of energy. Mental fatigue. Nausea, vomiting, or diarrhea. Lack of appetite. Weight loss
Prevalence of vitamin A deficiency in 1995. Vitamin A deficiency is common in developing countries but rarely seen in developed countries. Approximately 250,000 to 500,000 malnourished children in the developing world go blind each year from a deficiency of vitamin A. [49] Vitamin A deficiency in expecting mothers increases the mortality rate ...
2. Vitamin B12. One of eight B-complex vitamins, vitamin B12 is found naturally in some types of fish, red meat and fortified foods.It plays a key role in central nervous system function, DNA ...
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