Step 1: Understanding the Concept:
Breastfeeding (lactation) is an energy-intensive process. The mother's body needs extra energy, in the form of calories, to produce nutritious milk for the baby.
Step 2: Detailed Explanation:
The exact number of additional calories required can vary based on the mother's metabolism, body composition, and the baby's demand for milk.
Most international health organizations, such as the CDC and Mayo Clinic, recommend an additional 450 to 500 calories per day for a breastfeeding mother. Some guidelines may suggest slightly higher numbers, around 650-700 calories, especially during peak lactation.
Step 3: Final Answer:
According to the provided test, a breastfeeding mother needs an additional 500 calories per day.