American Journal of Clinical Nutrition, Vol 32, 779-782, Copyright © 1979 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Lactose malabsorption among Masai children of East Africa

RT Jackson and MC Latham

There is much disagreement about milk and its use in feeding programs both in the United States and internationally. A few authors suggest that milk consumption should not be encouraged in lactose intolerant populations due to adverse symptoms. Others suggest, however, that small or modest quantities of milk can be tolerated and can be nutritionally useful to such groups. Data are presented in this paper that show that 1) the Masai regularly drink considerable quantities of milk without apparent symptoms, 2) milk is an important constituent of the Masai diet, and 3) 62% of 21 Masai examined were malabsorbers of lactose as measured by the lactose tolerance test. This finding of lactose malabsorption in a nomadic cattle raising and milk drinking people is interesting and is contrary to the views often expressed by anthropologists and others. An ability to drink nutritionally useful quantities of milk does not, however, necessarily mean that milk production or imports should be encouraged in the Lesser Developed Countries.

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