Marsha Walker, RN, IBCLC. Marsha is a registered nurse and international board certified lactation consultant. She has been assisting breastfeeding families in hospital, clinic, and home settings since 1976. As such, she advocates for breastfeeding at the state and federal levels. She served as a vice president of the International Lactation Consultant Association (ILCA) from 1990-1994 and in 1999 as president of ILCA. She is a previous board member of the US Lactation Consultant Association, Baby Friendly USA, the Massachusetts Lactation Consultant Association, and the Massachusetts Breastfeeding Coalition. She serves as Associate Editor of Clinical Lactation and a board member of the National Lactation Consultant Alliance. Marsha is an international speaker, and an author of numerous publications including ones on the hazards of infant formula use, Code issues in the United States, and Breastfeeding Management for the Clinician: Using the Evidence, Fifth Edition.