publication . Other literature type . Article . 2009

Interactions between metabolic and reproductive functions in the resumption of postpartum fecundity

Claudia Valeggia; Peter T. Ellison;
Open Access English
  • Published: 19 Mar 2009
Lactation has long been recognized as a major determinant of interbirth intervals. The temporal pat- tern of nursing has been proposed as the mechanism behind lactational amenorrhea. We present a new model of the dynamic regulation of lactational amenorrhea that identifies maternal energy availability as the main determinant of ovarian resumption. Variation in the intensity of lactation remains a component of the model as a determinant of the absolute energetic cost of milk production. However, maternal energy supply determines net energy availability; a larger energy supply leaves a greater net energy surplus than a smaller energy supply (lactation costs being ...
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free text keywords: Article, Genetics, Anthropology, Ecology, Evolution, Behavior and Systematics, Anatomy, Offspring, Insulin, medicine.medical_treatment, medicine, Physiology, Biology, Lactational amenorrhea, Internal medicine, medicine.medical_specialty, Fecundity, Postpartum period, Weaning, Lactation, medicine.anatomical_structure, Insulin resistance, medicine.disease, Endocrinology
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