How much additional caloric intake is recommended for lactating mothers compared to their nonpregnant diet?

Lactating mothers are recommended to consume about 500 additional calories per day compared to their nonpregnant diet.

During lactation, a mother needs approximately 500 extra calories each day beyond what her nonpregnant diet provided. This increased caloric intake helps maintain the mother's nutrient stores and supports the nutritional needs of the infant. Adequate caloric intake is indicated by a stable maternal weight and a gradually increasing infant weight.