Nursing calories???

If you really want (or need) to count calories…

Studies have shown that most healthy breastfeeding women maintain an abundant milk supply while taking in 1800-2200 (or more) calories per day. Consuming less than 1500-1800 calories per day (most women should stay at the high end of this range) may put your milk supply at risk, as may a sudden drop in caloric intake. (See Can I diet while breastfeeding? for more information on calorie restriction).

A mother’s “baseline” need for calories (not including lactation) depends upon her activity level, weight and nutritional status. A mother who is less active, has more fat stores, and/or eats foods higher in nutritional value may need fewer calories than a mom who is more active, has fewer fat stores, and/or eats more processed foods. This link from the Children’s Nutrition Research Center at Baylor College of Medicine has more information (including a handy calculator) on determining your individual caloric needs: Research helps fine-tune a woman’s true caloric needs.

An exclusively breastfeeding mother, on average, needs to take in 300-500 calories per day above what was needed to maintain pre-pregnancy weight. Since the recommended added calories during the last two trimesters of pregnancy is 300 calories/day, an exclusively breastfeeding mother will typically need either the same amount of calories she was getting at the end of pregnancy, or up to 200 additional calories per day. That’s the equivalent of adding 1-2 healthy snacks per day.

Per Breastfeeding and Human Lactation (Riordan, 2004, p. 438), “The amount of energy needed by lactating mothers continues to be debated. The lactating mother need not maintain a markedly higher caloric intake than that maintained prior to pregnancy: in most cases, 400-500 calories in excess of that which is needed to maintain the mother’s body weight is sufficient.”

The number of additional calories needed for nursing depends on:

The extent of breastfeeding:
Is your child exclusively breastfed, mostly breastfed, or breastfed 1-2 times per day? If your nursling is only partially breastfed (for example, an older child who is getting less milk, or a younger child who is getting formula supplements), calorie requirements would be proportionally less.
Mom’s fat reserves:
Is your body mass index [BMI] low, high or in-between? A mom who does not have any spare fat reserves (and most of us do!) will need the greatest number of extra calories. Maternal fat stores typically provide about 200 calories per day towards lactation, so if your BMI is low (particularly if you’re considered very underweight, or BMI<19.8) you will need to get extra calories from your diet.