How ACEs Shape Your Child’s Stress Response
Parenting Through ACEs: Resilience Skills Series offers trauma-informed, practical guidance for parents raising children affected by adversity, high-conflict co-parenting, and toxic stress, with weekly tools to build safety, regulation, and resilience at home.
When you’re parenting amid high-conflict divorce, coercive control, or the aftermath of domestic violence, it’s clear your child has been exposed to far more than everyday stress. You might have heard the term Adverse Childhood Experiences (ACEs) and wondered what it really means for your child’s nervous system, behavior, and long-term health.
The presence of ACEs does not mean your child is broken or doomed. It means their stress system has had to work harder than it should. When a child has even one steady, attuned caregiver, the nervous system can gradually relearn what safety feels like and become less dominated by survival responses.
What ACEs are
ACEs are potentially traumatic experiences that happen before age 18. They include things like ongoing parental conflict, exposure to domestic violence, caregiver substance use, caregiver mental health struggles, separation or divorce that is filled with tension, and other forms of abuse or neglect.
Research has identified 10 core categories of adversity across three domains and has shown that ACEs accumulate in a “dose-response” way—meaning the more ACEs someone experiences, the higher their risk for later health and mental health challenges.
ACEs are also common. Studies suggest that about two-thirds of adults have experienced at least one ACE, and around one in eight people have experienced four or more. This means you are not alone if you recognize these patterns in your child’s life or your own history.
ACEs are not destiny
Here’s what to know when fear starts to take over: ACEs increase risk, but they do not write the whole story. Many parents feel guilt or shame when they realize their child has experienced ACEs, especially in high-conflict co-parenting situations. That guilt can be heavy, but staying stuck in it does not help you or your child.
What changes outcomes is what happens next. Children who have experienced ACEs especially need a safe, loving, consistent relationship with at least one adult to grow up strong and healthy. Connecting with, loving, and supporting your child—and protecting them from further harm when possible—becomes a powerful form of repair.
If you grew up with your own ACEs, you can still choose a different path. You can become the kind of caregiver you needed, even while you continue to heal yourself.
How the stress response works
To understand how ACEs affect your child, it helps to know a little about the stress response system. The stress response is the body’s alarm system. It exists to protect us from danger and prepare us to face challenges.
When the brain senses a threat, it sends signals through the nervous system and hormonal pathways that activate one of several survival responses:
Fight – Moving toward confrontation: yelling, arguing, hitting, or trying to control the situation.
Flight – Moving away: running, hiding, avoiding, or “checking out” of difficult interactions.
Freeze – Shutting down: going numb, going blank, feeling paralyzed, or dissociating when a child feels powerless.
Fawn – Appeasing: people-pleasing, trying to keep everyone calm, agreeing quickly, or minimizing their own needs to avoid conflict or danger.
None of these responses are “bad.” They are survival strategies the nervous system uses to try to stay safe. The challenge comes when the stress response is activated over and over without enough safety or support.
Many survivors of coercive control or domestic violence recognize the fawn response deeply. Children in these environments often learn to scan for adult moods, smooth things over, and take responsibility for keeping peace that is not theirs to hold.
What toxic stress is
When serious or repeated adversity happens, and a child does not have a reliable, supportive adult to help them feel safe and calm, the stress response can stay on high alert. Over time, this prolonged activation is called toxic stress.
Toxic stress is not just about feeling stressed. It is about the body getting very good at detecting and reacting to threats, even when they are no longer present. This can affect brain development, immune function, and endocrine systems, and increase risk for later health problems.
It is important to note that not all stress is harmful.
Positive stress is brief, manageable, and predictable—like taking a test or learning a new skill. It helps the stress system become more resilient.
Tolerable stress involves more serious events, but with strong support and tools, the stress response can be buffered and eventually return to baseline.
Toxic stress happens when severe, repeated, or prolonged stressors occur without adequate protective relationships or interventions.
Your role as a parent is central to whether stress becomes tolerable or toxic for your child.
Your child’s brain under stress
When stress is manageable, the thinking parts of the brain stay connected to the emotional parts. Your child can feel feelings, consider options, and make choices that fit the situation.
When stress becomes overwhelming, the emotional survival centers take over and the thinking parts of the brain essentially go offline. In that state, children are more likely to:
Act from survival instincts (fight, flight, freeze, fawn).
Have trouble listening, problem-solving, or following instructions.
Show behaviors that look defiant, shut down, overly accommodating, or “out of control,” but are actually the nervous system trying to cope.
This is why kids cannot learn new skills or use logic in the middle of a meltdown, panic, or appeasing spiral. Learning happens when the brain feels safe and regulated.
How parents can start to buffer ACEs
Reduce the dose of adversity where possible
This might mean minimizing exposure to conflict, using parallel parenting, creating calm transitions, or protecting your child from adult conversations and details that are not theirs to carry.Strengthen your ability to be a healthy buffer
If your own stress response is dysregulated, it is very hard to help your child regulate theirs. Attending to your mental health, trauma history, and support systems is not selfish—it is part of protecting your child.Engage in self-care and protective factors
Supportive relationships and mental healthcare are major buffers, and later posts in this series will cover additional stress-relieving self-care such as mindfulness, sleep, nutrition, nature, and physical activity.
When your child has at least one caregiver who is emotionally present, predictable, and committed to learning these skills, their stress system has a better chance of recovering.
What this means for you as a parent
This series is not about perfection. It is about shifting from feeling powerless in the face of ACEs to understanding where your influence still matters.
Knowing that your child has experienced ACEs can be painful. It may activate your own trauma history or fears about the future. But it can also be a turning point: a moment where you recognize that your presence, your healing, and your daily choices can help regulate your child’s stress response and rewrite parts of the story.
In the coming posts, we will walk through specific resilience skills—mindfulness, attachment, co-regulation, trauma-informed discipline, emotion regulation, cognitive skills, and relationship skills—so you have concrete ways to support your child’s nervous system and long-term wellbeing.
If you’re navigating a high-conflict co-parenting situation and need support, coaching can help you apply these ideas to your unique family context, so you are not trying to carry the weight of ACEs and toxic stress alone.