In the space of one generation major changes have begun to take place in the field of human reproduction. A rapid increase in the control of fertility and the understanding and treatment of sexual health issues have been accompanied by an emerging threat to reproductive function linked to increasing environmental pollution and dramatic changes in lifestyle. Organised around four key themes, this book provides a valuable review of some of the most important recent findings in human reproductive ecology. Major topics include the impact of the environment on reproduction, the role of physical activity and energetics in regulating reproduction, sexual maturation and ovulation assessment and demographic, health and family planning issues. Both theoretical and practical issues are covered, including the evolution and importance of the menopause and the various statistical methods by which researchers can analyse characteristics of the menstrual cycle in field studies.

In the space of one generation major changes have begun to take place in the field of human reproduction. A rapid increase in the control of fertility and the understanding and treatment of sexual health issues have been accompanied by an emerging threat to reproductive function linked to increasing environmental pollution and dramatic changes in lifestyle. Organised around four key themes, this book provides a valuable review of some of the most important recent findings in human reproductive ecology. Major topics include the impact of the environment on reproduction, the role of physical activity and energetics in regulating reproduction, sexual maturation and ovulation assessment and demographic, health and family planning issues. Both theoretical and practical issues are covered, including the evolution and importance of the menopause and the various statistical methods by which researchers can analyse characteristics of the menstrual cycle in field studies.

It is widely believed that reproductive cycles are very similar between human females. However, there are in fact considerable variations both between individuals and within the reproductive life of any given individual. 'Normal' reproductive cycles cover a wide range of eventualities, and the likelihood of successful monthly egg release and ensuing pregnancy can be modified by a large number of factors. In this book, the variability of human fertility is examined by first looking at the physiological processes regulating reproduction, and the roles of metabolic adaptation and metabolic load. Inter-population variation in normal ovarian function is then discussed, covering the importance of factors such as age, disease and breastfeeding in modifying ovarian function. First published in 1996, this is an important book for all those interested in human fertility.

Many wrongly believe that reproductive cycles are very similar among human females. In actuality, there are considerable variations among individuals and within the reproductive life of any given female. "Normal" reproductive cycles cover a wide range of examples, and the likelihood of successful monthly egg release and ensuing pregnancy can be modified by many factors. In this book, the variability of human fertility is examined by looking first at the physiological processes regulating reproduction. Interpopulation variation in normal ovarian function is then discussed, covering the importance of factors such as age and disease in the modification of ovarian function. The final part of this text covers issues of metabolic effects on reproduction. Researchers will welcome this definitive compilation of observations on fertility.