The energy needs of a breast feeding mother are increased because of milk production. The energy requirements for breast feeding mothers are an additional 500 calories/day or 2.0–2.1 MJ/day assuming
full breast feeding in the first 6 months and partial breast feeding after that.10
While it is normal (and expected) that mothers put on weight while pregnant, it is not recommended that mothers follow a weight loss diet while breast feeding. Breast feeding naturally allows for gradual weight loss. If a mother gains weight after birth, it is most likely she is eating too much food, or choosing foods that are excessively high in energy (kilojoules/ calories).
The energy and nutrient needs of a breast feeding mother are increased because of milk production.