A breastfeeding diet is much the same as during pregnancy, with a few differences. It’s important to have a variety of foods to make sure that your baby is getting all the vitamins and nutrients they need to grow. A well-rounded diet that includes nutrient-rich foods, such as vegetables, fruits, whole grains and lean proteins, supplies the building blocks needed for good milk production. A good diet also helps to replace and build up any “supplies” that may be depleted.