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American Journal of Clinical Nutrition, Vol 27, 728-732, Copyright © 1974 by The American Society for Clinical Nutrition, Inc.
1 Third Year Medical Student, Cornell University Medical College, New York, N. Y. 10021
2 Resident in Pediatrics, New York Hospital-Cornell Medical Center
3 Assistant Professor of Public Health, Cornell University Medical College, New York, N. Y. 10021
Lactose malabsorption occurred in 56% of a random sample of 94 rural Jamaican children under 4 years of age. There was a significant decrease in the percentage of children able to absorb lactose after the first year of life. When the original malabsorbers were retested 7 to 8 months later, 21% had normal lactose tolerance curves. Similar lactose tolerance tests on 20 urban Jamaican children revealed that 14, or 70%, were lactose malabsorbers. Neither sex, anthropometric status, milk consumption, symptoms of lactose intolerance, nor duration of breast feeding correlated with the occurrence of lactose malabsorption or its persistence.
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