During breastfeeding, your nutritional needs increase to support both you and your baby. It's important to consume a balanced diet rich in fruits, vegetables, whole grains, protein, and healthy fats. Aim for an additional 300-500 calories per day, focusing on nutrient-dense foods. Key nutrients include calcium, iron, and vitamin D. Staying hydrated is equally important, so drink plenty of fluids. The NHS encourages breastfeeding mothers to take a daily vitamin D supplement. Consult your healthcare provider for personalized dietary advice.