A balanced and healthy diet is always important throughout your life. However, when you breastfeed, your body will change to make you feel both hungrier and thirstier. While breastfeeding, you need to eat about 500 extra calories each day. You can get these extra calories by choosing nutrient-rich foods. Choose from the six food groups, and follow these guidelines for a healthy, balanced diet while you are breastfeeding. And remember to take your prenatal vitamin!