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The bioavailability of diverse iron compounds added to the mostly vegetable diets of such populations showed the superior absorption of chelated iron (NaFeEDTA) and its strong effectiveness in correcting iron deficiency when added to sugar. The consequences on development and mental behavioral functions as well as on work capacity of iron deficiency and anemia in infants, children and adults, and the positive effects of their correction was demonstrated. In protein-energy malnourished (PEM) children, the deficit in active tissue mass (basal oxygen consumption) and in total hemoglobin content were closely related. This relationship persisted as the rates of active tissue mass repletion was modified by levels of protein intake. This demonstrated the strong adaptive nature of hemoglobin content in response to oxygen needs in PEM and during recovery.<\/jats:p>\n                  <jats:p>Gastrointestinal functions in PEM and in populations demonstrated the bacterial invasion of the upper GI tract and how this resulted in secondary bile acids that are toxic to the intestinal mucosal cells impairing their absorptive functions. Environmental hygiene in populations reversed gut bacterial migration and improved GI function.<\/jats:p>","DOI":"10.1177\/156482651003100113","type":"journal-article","created":{"date-parts":[[2015,11,25]],"date-time":"2015-11-25T16:02:18Z","timestamp":1448467338000},"page":"130-140","source":"Crossref","is-referenced-by-count":8,"title":["INCAP Studies of Hematologic and Gastrointestinal Function in Healthy Individuals and those with Protein\u2013Energy Malnutrition and Infection"],"prefix":"10.1177","volume":"31","author":[{"given":"Fernando E.","family":"Viteri","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2010,3,10]]},"reference":[{"key":"bibr1-156482651003100113","doi-asserted-by":"publisher","DOI":"10.1177\/156482651003100104"},{"key":"bibr2-156482651003100113","doi-asserted-by":"publisher","DOI":"10.1177\/156482651003100103"},{"key":"bibr3-156482651003100113","volume-title":"Nutritional evaluation of the population of Central America and Panama: Summary 1971","author":"Interdepartmental Committee on Nutrition for National Development","year":"1971"},{"key":"bibr4-156482651003100113","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2141.1972.tb03472.x"},{"key":"bibr5-156482651003100113","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2141.1972.tb03487.x"},{"key":"bibr6-156482651003100113","first-page":"33","volume":"23","author":"Viteri FE","year":"1973","journal-title":"Arch Latinoam Nutr"},{"key":"bibr7-156482651003100113","doi-asserted-by":"publisher","DOI":"10.1093\/ajcn\/30.7.1175"},{"key":"bibr8-156482651003100113","doi-asserted-by":"publisher","DOI":"10.1182\/blood.V38.5.591.591"},{"key":"bibr9-156482651003100113","first-page":"69","volume":"34","author":"Franzetti S","year":"1984","journal-title":"Arch Latinoam Nutr"},{"key":"bibr10-156482651003100113","unstructured":"Viteri F. 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