09/01/2026
Leaving babies to cry is not helping babies to regulate
Letting a baby “cry it out” may seem like a simple sleep solution, but research shows it can have lasting effects on the brain. Prolonged distress increases cortisol, the stress hormone, which impacts neural development.
High cortisol levels during early life can weaken the connection between the prefrontal cortex and the amygdala, key regions responsible for emotional regulation. This disruption may make it harder for children to manage stress later in life.
Babies communicate through crying. Ignoring these signals prevents the development of trust and secure attachment. Neural pathways associated with safety, comfort, and regulation rely on responsive caregiving, and neglecting them can alter emotional development.
Parents can support healthy stress regulation by responding promptly and calmly to their baby’s cries. Gentle soothing, holding, or consistent routines teach the brain that the world is safe and that emotions are manageable.
Understanding the long-term impact shifts the focus from short-term sleep solutions to emotional and neurological well-being. Responsive care fosters strong connections, healthy stress responses, and resilience that children carry into adulthood.