Milk sales and dietary diversity among the Maasai
研究了坦桑尼亚马赛人牛奶销售对家庭膳食多样性的影响，发现卖奶家庭饮食更多样化，但人均消费量相似，表明卖奶收入用于改善饮食质量而非增加数量。
Abstract In Maasai culture, responsibilities are traditionally divided between genders. Men are in charge of grazing and managing the livestock herds. Women take care of the family, administer food supplies, and are responsible for milking. For them, balancing home consumption of milk (for the family and for the calves), milk sale, and food purchase is a major task. In this article, we first investigate how different milk sales groups vary regarding the use of different food items and the respective quantities consumed by the enkaji , i.e., a Maasai subhousehold. Then, we address the commercialization decision and assess the effect of milk sales on the enkaji 's food item use and food consumption. Using the data of Maasai enkajijik in the milk catchment area of a milk collection center in Ngerengere, Tanzania, we estimate the effects by employing propensity score matching procedures. Our findings suggest that milk sellers, especially those selling to the milk collection center, have a more diverse diet. In terms of per person consumption, the groups are markedly similar. Therefore, we conclude that income generated by milk sales is invested in diet diversification rather than in increasing the quantity of food consumed, hence the enkajijik appear not to make use of caloric terms of trade.