IBCLC Practice Exam 2026 – All-in-One Guide to Excelling in Your Lactation Consultant Certification!

Insulin is a crucial hormone in the process of lactogenesis, particularly during the synthesis of milk. It plays a significant role in providing the necessary energy for milk production. This energy is sourced from glucose, which is regulated by insulin levels in the blood. Adequate insulin facilitates the uptake of glucose into cells, allowing lactocytes (the milk-producing cells in the mammary glands) to convert this glucose into lactose, the primary carbohydrate found in breast milk.

During lactation, insulin also supports the metabolism of fat and protein, contributing to overall milk composition. In this context, insulin is vital for maintaining the energy balance required for effective milk synthesis, making the choice of its role in providing energy for milk synthesis the correct answer.