More and more scientific evidence is appearing every day confirming that the species composition of our microbiome—the invisible microbial ecosystem living inside each of us—plays a key role in human health. “The Microbiome Effect” is the first book focused on the scientific data emerging today about how the way a person is born affects microbiome formation. Tony Harman and Alex Wakeford ask important questions about the potential long-term consequences of interventions that are becoming commonplace, such as C-sections or the use of synthetic oxytocin, and share new information with readers about how formula feeding influences the species diversity of a baby’s microbiome. The book includes information from experts in different countries, including midwives, developers of global healthcare policy, professionals in pediatrics, immunotoxicology, and genetics. The book is intended for parents, midwives, and other healthcare professionals.