1: Biocultural Perspectives on Breastfeeding; 2: A Time to Wean: The Hominid Blueprint for the Natural Age of Weaning in Modern Human Populations; 3: Breastfeeding in Prehistory; 4: The Culture and Biology of Breastfeeding: An Historical Review of Western Europe; 5: Sociocultural Aspects of the Lactation Process; 6: The Politics of Breastfeeding: An Advocacy Perspective; 7: Beauty and the Breast: The Cultural Context of Breastfeeding in the United States; 8: Baby?Controlled Breastfeeding: Biocultural Implications; 9: Breastfeeding: Adaptive Behavior for Child Health and Longevity; 10: Breastfeeding and Infant?Parent Co-Sleeping as Adaptive Strategies: Are They Protective against SIDS?; 11: Breastfeeding, Fertility, and Maternal Condition; 12: Breast Cancer, Reproductive Biology, and Breastfeeding; 13: Commentary Breastfeeding: Biocultural Perspectives; 14: Commentary Breastfeeding Is More Than Just Good Nutrition; 15: Commentary Breastfeeding Study Design Problems-Health Policy, Epidemiologic and Pediatric Perspectives