07/08/2025
Letting a baby cry it out might sound like tough love but science says it’s tougher on the baby than anyone else.
Research now shows that ignoring a crying infant or frequently leaving them to self-soothe without comfort can have real consequences not just emotionally, but neurologically. A large-scale Japanese study involving over 100,000 mother-child pairs found a clear link between chronic non-response during infancy and developmental delays. These included setbacks in communication, social interaction, motor coordination, and even problem-solving abilities.
But it doesn’t stop at developmental skills.
When babies cry for extended periods without comfort, their bodies release large amounts of cortisol, the primary stress hormone. And while short-term stress responses are natural, prolonged elevated cortisol levels can disrupt brain development, particularly in regions responsible for emotional regulation, memory, and attachment.
This early emotional stress may also lead to weaker caregiver bonds, and increases the risk of anxiety, aggression, and lower IQ later in life. The baby learns not just that their needs won’t be met but that the world may not be safe or responsive at all.
Comforting a crying baby isn’t about spoiling them it’s about building their brain, shaping secure attachment, and laying the groundwork for emotional resilience. Every time you respond with love, you’re not just calming a cry you’re wiring a healthier future.
