Why can a breast pump not express milk, but the baby is able to suck it out?

The breast pump cannot extract milk, but the baby is able to do so. This situation may be caused by the following reasons: 1. Insufficient suction power of the breast pump: The pump may simply lack adequate suction strength, especially certain manual models, which often fail to reach deeper milk ducts in the breast. 2. Improper use of the breast pump: Incorrect assembly or failure to follow the manufacturer's instructions can prevent the pump from working effectively. 3. Milk congestion in the breast: If there is an excessive amount of milk causing blockages or congestion, the breast pump might not fully remove it, whereas a baby’s stronger and more dynamic sucking action can successfully express the milk. If this issue persists, it is recommended to consult a healthcare professional.