Published online by Cambridge University Press: 31 July 2008
In the Ntomba of Zaire, observation on weaning patterns shows that the young primipara receives special attention in terms of nutrition and expected activities. Anthropometric examination shows that there is a pronounced effect on physique, the resulting accumulation of fat providing a buffer against seasonal variation in food availability, and allowing her to meet the high energy cost of nursing. The biological effects of these cultural practices suggest that they should be regarded as adaptive.