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1 Arctic Health Research Center, Public Health Service, Department of Health,
Education and Welfare, Anchorage, Alaska.
Methemoglobinemia is unusually frequent in Alaskan Eskimos and Indians
in whom 15 confirmed cases in a population of about 20,000 are known. It appears to be due to the absence of a factor in red cells which mediates the reduction of methemoglobin by reduced pyridine nucleotides. This anomaly is
probably inherited as a recessive trait. The amount of methemoglobin present at any one time in these persons is
variable, depending on some environmental influence. The evidence suggests
that this environmental influence is the dietary intake of ascorbic acid.
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