Analysing the characteristics of the menstrual cycle in field situations in humans: some methodological aspects

摘要

Reproductive function represents a rather unique endocrine system since its "goal" is the perpetuation of the species, not the individual. Hence its regula-tion in humans, which integrates both exogenous and endogenous factors, and represents a complex system with large within- and between-women variability in both the menstrual cycle length and the ovulatory cycle.