Cortisol, often referred to as the “stress hormone,” plays a crucial role in our daily functioning. It helps regulate sleep-wake cycles, metabolism, and immune responses. Cortisol levels naturally fluctuate throughout the day, peaking in the morning to promote wakefulness and declining in the evening to facilitate sleep.

When babies experience stress, such as during crying episodes, their cortisol levels can temporarily rise. This is a normal physiological response designed to help the body manage challenges. Some parents worry that increased cortisol during sleep training might lead to long-term harm. Let’s explore what research says about this concern.

Cortisol and Crying: Insights from Research

Crying is a baby’s primary means of communication. During sleep training, some crying is expected as the child adapts to falling asleep independently. Temporary increases in cortisol during this period are typical and not indicative of chronic stress.

A study published in Pediatrics examined the long-term effects of behavioral sleep interventions on infants. The researchers found no significant differences in cortisol levels between infants who underwent sleep training and those who did not, both in the short term and up to five years later. This suggests that sleep training does not lead to elevated stress levels in the long run. Read more here.

Another study reported by the BBC highlighted that while sleep training methods like controlled crying can lead to temporary increases in cortisol, these levels normalize as infants adjust to new sleep routines. Importantly, the study found no evidence of long-term emotional or behavioral harm resulting from sleep training. Read more here.

The Long-Term Benefits of Healthy Sleep

Establishing healthy sleep patterns is beneficial for both infants and their parents. Chronic sleep deprivation can disrupt cortisol regulation and negatively impact mood and overall health. By learning to fall asleep independently, babies often experience more restful sleep, which contributes to better stress regulation and development.

Research indicates that infants who participate in sleep training interventions tend to have improved sleep quality without adverse effects on their emotional well-being. A study in the Journal of Pediatrics found that behavioral sleep interventions did not negatively impact the parent-infant relationship or child development up to five years post-intervention. Read more here.

Finding Balance: Support and Consistency

For parents concerned about sleep training, it’s essential to choose an approach that combines compassion with consistency. Methods such as “camping out,” where a parent stays in the room during sleep training, can provide reassurance to both parent and child. This gradual approach allows the child to develop independent sleep skills while maintaining a sense of security. Read more here.

Remember, brief periods of increased cortisol during sleep training are a normal part of the adjustment process. The long-term benefits of establishing healthy sleep habits far outweigh the temporary challenges, leading to improved well-being for both your child and your family.

Additional Resources

If you’re interested in learning more about creating a healthy sleep plan, consider booking a call with me. I have helped more than 250 families teach their children to sleep well. Sleep is a vital component of health, and helping your child develop good sleep habits is a valuable investment in their future well being.