FIGURE 5-1 Milk intakes during established lactation from studies meeting defined criteria, from Neville et al. (1988) with permission. The lines show the smoothed mean ± standard deviation, from Neville et al. (1988). The points represent average intakes from studies that obtained data from test weighing, validated exclusive breastfeeding, studied three or more subjects, and reported milk transfer by monthly intervals.

FIGURE 5-2 Average intake of human milk by infants at age 3 months in industrialized and developing countries. Data were compiled from studies later than the year 1975. Adapted from Prentice et al. (1986) with permission.