Supply and Demand

U.S. Department of Health and Human Services, Office on Women's Health – Coping with Breastfeeding Challenges: Low Milk Supply
http://www.4woman.gov/breastfeeding/index.cfm?page=229#lowMilk

Abstract
For breastfeeding women who are concerned about their milk supply, several suggestions on ways to increase milk supply are provided. Staff and pregnant and breastfeeding women receive useful information about milk supply and growth spurts in babies. Breastfeeding women with low milk supply are advised to contact a lactation consultant for assistance.