Denmark's Sleep Training Debate: Did Denmark Ban Sleep Training?
- Lindsay Sinopoli - CCSC, CLC, NCS, CPTC
- 20 hours ago
- 4 min read
The moment phrases like “500 psychologists asked government to ban sleep training” start circulating online, it’s understandable that parents pause.
The discussion often referred to as the “Denmark 500” has become one of the most widely shared examples of this conversation online.
And in many ways, they should encourage thoughtful reflection. Conversations surrounding infant sleep, attachment, emotional regulation, and child development deserve to be taken seriously.
But they also deserve context.
Where did this discussion come from?
The debate originated after more than 700 Danish psychologists, psychotherapists, and child development professionals signed an open letter expressing concern about certain extinction-based sleep training approaches involving prolonged unsupported crying.
The letter received significant attention internationally and quickly became simplified online into phrases suggesting that “Denmark banned sleep training.”
That did not happen.
No governmental ban was introduced, and the discussion itself was not a government-led clinical research study. Rather, it reflected professional disagreement surrounding specific behavioural sleep approaches and broader questions about infant emotional wellbeing.
This distinction is important because professional disagreement within child development fields is not unusual.
Child psychology, attachment theory, sleep science, and developmental neuroscience are all evolving areas of research, and thoughtful debate within these fields is both normal and healthy.
One phrase, many very different approaches
Part of the difficulty within sleep training discussions is that the phrase itself has become incredibly broad.
Two parents may both say they are “sleep training” while implementing completely different approaches.
One family may be using highly attached, gradual, responsive methods, involving parental presence and physical reassurance throughout the process. Another may be attempting a much more structured extinction-based approach with minimal interaction.
These are not emotionally or physiologically identical experiences for either the child or the parents.
At its heart, responsive sleep training is not about forcing a baby or child to sleep beyond what they are developmentally capable of. Instead, it is about gently removing any obstacles that may be unintentionally contributing to fragmented sleep, so a child can sleep as well as they are naturally capable of for their age and stage of development.
Within my own practice, sleep support is always individualized, responsive, and relationship-centered. Some families feel most comfortable remaining very involved physically and emotionally throughout the process, while others find that too much interaction becomes overstimulating or distressing for their child.
The goal is never emotional withdrawal.
The goal is helping a child develop healthy, sustainable sleep patterns, while preserving emotional safety, connection, and responsiveness.
Importantly, many responsive sleep approaches do not require parents to leave their child alone or ignore their distress.
Support can include:
staying physically present while their child falls asleep
offering reassurance
gradual transitions
responsive settling
feeding support
emotional co-regulation
and adapting the pace of change to the child’s temperament and developmental stage
Why this conversation resonates emotionally with parents
Sleep is deeply emotional.
For many parents, concerns about sleep training are not really about bedtime alone. They touch on something much deeper: the fear of getting attachment “wrong.”
Modern parents are absorbing an enormous amount of information online, much of it emotionally charged and often lacking evidence.
It is therefore understandable that seeing headlines involving hundreds of psychologists warning about infant emotional wellbeing would feel alarming.
But it is equally important to avoid reducing highly complex developmental conversations into absolute statements such as:
“sleep training is harmful”
or “all crying causes trauma.”
Human development simply does not work that way.
What does long-term research actually show?
When researchers examine long-term outcomes of behavioural sleep interventions, the findings are far more balanced than social media conversations often imply.
Longitudinal studies have not demonstrated evidence of attachment damage, emotional dysfunction, or negative parent-child relationship outcomes following evidence-based behavioural sleep interventions.
What researchers have consistently found are improvements in:
parental mental health
maternal depression
family functioning
sleep quality
and overall household wellbeing
This does not mean every method is appropriate for every child.
Nor does it mean parents should suppress their instincts or push themselves beyond their emotional comfort level.
But it does remind us that supporting healthy sleep and supporting emotional wellbeing are not mutually exclusive goals.
The impact of chronic sleep deprivation matters too.
One element often missing from online discussions is the effect chronic sleep deprivation itself can have on both children and parents.
Persistent fragmented sleep can contribute to:
emotional dysregulation
heightened stress responses
parental anxiety
maternal depression
cognitive exhaustion
relationship strain
and reduced emotional capacity within the household
Families usually seek sleep support because something is no longer functioning sustainably.
And while healthy attachment absolutely matters, so too does the emotional wellbeing of exhausted parents trying to function through months or years of broken sleep.
A calmer and more balanced conversation.
The Denmark discussion raised meaningful questions about infant emotional wellbeing and behavioural sleep interventions.
Those questions deserve thoughtful consideration, not dismissal.
But it is equally important that parents understand what the discussion actually represented:
a professional debate
concerns surrounding specific extinction-based methods
and differing philosophies within child development and sleep science
It was not a declaration that all sleep support is harmful.
Healthy attachment develops over time through repeated experiences of love, responsiveness, comfort, protection, emotional safety, and connection.
Supporting a child toward better sleep within a loving responsive family environment does not automatically conflict with those foundations.
Healthy attachment and connection with your child, and a stable, restorative and predictable nights sleep - do not need to be mutually exclusive. With the right (evidence based) approach, you can achieve both.
References
Hiscock, H. et al. (2012). Five-year follow-up of harms and benefits of behavioral infant sleep intervention. Pediatrics.
Mindell, J.A. et al. (2006). Behavioral treatment of bedtime problems and night wakings in infants and young children. American Academy of Sleep Medicine.
