Kwashiorkor ( ) is a form of severe protein malnutrition characterized by edema and an enlarged liver with fatty infiltrates. It is thought to be caused by sufficient calorie intake, but with insufficient protein consumption (or lack of good quality protein). It is different from marasmus, which is malnutrition of all sources of energy including protein. Recent studies have found that a lack of antioxidant micronutrients such as β-carotene, lycopene, other carotenoids, and vitamin C as well as the presence of aflatoxins may play a role in the development of the disease. However, the exact caus
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Kwashiorkor ( ) is a form of severe protein malnutrition characterized by edema and an enlarged liver with fatty infiltrates. It is thought to be caused by sufficient calorie intake, but with insufficient protein consumption (or lack of good quality protein). It is different from marasmus, which is malnutrition of all sources of energy including protein. Recent studies have found that a lack of antioxidant micronutrients such as β-carotene, lycopene, other carotenoids, and vitamin C as well as the presence of aflatoxins may play a role in the development of the disease. However, the exact cause of kwashiorkor is still unknown. Inadequate food supply is correlated with kwashiorkor; occurrences in high-income countries are rare. It occurs amongst weaning children to ages of about five years old.
Conditions analogous to kwashiorkor were well documented around the world throughout history. The disease's first formal description was published by Jamaican pediatrician Cicely Williams in 1933. She was the first to research kwashiorkor, and to suggest that it might be a protein deficiency to differentiate it from other dietary deficiencies.
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