Zohoori, Namvar (1994). The Effects of Calories and Types of Supplements on Postpartum Amenorrhea in the Philippines. Annals of the New York Academy of Sciences, 709
Increasing the birth interval has been the focus of many intervention programs in developing countries. Postpartum amenorrhea (PPA) is a basic component of the birth interval, and its duration is mainly a function of the practice of breast-feeding, which today is considered to be the primary cause of prolonged PPA. Full and unsupplemented breast-feeding has been shown to be associated with the longest durations of PPA, and the effects of the frequency and duration of breast-feeding are well known and reviewed. What is less understood is the effect of supplemental calories and the types of supplements that the infant receives, particularly in the face of the complex feeding patterns that can exist. These factors are the more distal, though no less important determinants of PPA, but reports of studies on these factors are very limited.
Annals of the New York Academy of Sciences