Adverse childhood experiences (ACEs) are traumatic or highly stressful events during childhood, such as abuse, neglect, or growing up in a household affected by violence, mental illness, or substance use. Research consistently finds a graded relationship between adverse childhood experiences and addiction: the more ACEs a person experienced, the higher their statistical risk of developing a substance use disorder later in life. That risk is a probability, not a prediction, and it can be reduced with treatment and support.
A Look Into Adverse Childhood Experiences and Addiction
In the mid-1990s, the Centers for Disease Control and Prevention and the healthcare company Kaiser Permanente conducted a large survey of Kaiser’s Southern California HMO membership. The study’s purpose was to examine whether there was a connection between childhood experiences and adult health status. It found a significant association between adverse childhood experiences and the prevalence of chronic disease, mental illness, and other negative outcomes. The Kaiser survey and the research that followed found a particularly strong connection between adverse childhood experiences and addiction.
How Are Adverse Childhood Experiences Defined?
Adverse childhood experiences are events that cause trauma and chronic stress during childhood. They are typically grouped into three categories: abuse, neglect, and household dysfunction.
The 10 Original ACEs
Abuse
- Physical abuse
- Emotional abuse
- Sexual abuse
Neglect
- Physical neglect
- Emotional neglect
Household dysfunction
- A household member with a mental illness or depression
- A household member with an alcohol or drug problem
- Witnessing a mother or stepmother being treated violently
- A household member in prison
- Losing a parent to separation or divorce
Expanded ACEs Used in Later Research
Later studies broadened the list to reflect adversity that occurs outside the home, including:
- Bullying by an adult or peer
- Racism and gender discrimination
- Witnessing a father being abused by a mother
- Witnessing a sibling being abused
- Witnessing violence outside the home
- Living in an unsafe neighborhood
- Involvement in the foster care system
- Losing a family member to deportation
- Living in a war zone
What Is an ACE Score, and What Does It Tell You?
An ACE score is simply a count. Each category of adversity you experienced before age 18 counts as one point, so scores on the original questionnaire range from 0 to 10. A high score means a person experienced multiple types of childhood adversity.
Two things are worth understanding about that number. First, it measures categories, not severity or frequency, so two people with the same score may have lived through very different childhoods. Second, an ACE score is a research and screening tool, not a diagnosis and not a forecast of your future. It describes risk across large populations. It does not determine what happens to any individual person.
If you find yourself adding up your own score while reading this, know that many people with high ACE scores never develop a substance use disorder, and many who do go on to recover fully.
The Link Between High ACE Scores and Poor Health
The ACE study and later research found that sustained adversity in childhood is associated with changes in how the developing brain and immune system function, which can in turn affect cognition, stress regulation, and the ability to manage difficult emotions. People who reported four or more ACEs showed a higher likelihood of developing chronic disease, including mental illness.[1]
Notably, the research points to the cumulative number of adverse experiences as a stronger predictor of adult health outcomes than any single type of trauma.
How Adverse Childhood Experiences and Addiction Are Connected
Addiction is one of the health problems most strongly correlated with a high ACE score. In the original ACE study data, people reporting five or more categories of childhood adversity were roughly 7 to 10 times more likely to report illicit drug use problems and addiction than people with no ACEs.[5]
Further research has added detail to the relationship between ACE scores and substance use:
- ACE scores can predict early drinking behaviors in adolescence.[3]
- Childhood abuse and parental substance use are associated with higher rates of mental illness and substance use disorders later in life, including among adults aged 50 and older.[4]
- Each additional ACE was associated with a two- to fourfold increase in the likelihood of early initiation of illicit drug use.[5]
- In a study of adolescents, each additional ACE was associated with a 47% increase in the odds of misusing prescription pain relievers, and with a 62% increase in the estimated number of prescription drugs used non-medically.[6]
These figures describe associations observed across populations. They do not mean that childhood trauma causes addiction in any particular person, and adversity is only one influence among many.
Why Childhood Adversity May Raise the Risk of Addiction
Researchers have proposed several overlapping explanations, and no single one accounts for the whole picture:
- Self-medication. Substances can temporarily quiet the anxiety, hypervigilance, intrusive memories, and emotional pain that often follow trauma.
- Stress response. Prolonged adversity in childhood appears to affect how the stress response system develops, which may make distress harder to regulate in adulthood.
- Fewer coping tools. Children who grow up without consistent, safe caregiving often reach adulthood with fewer learned strategies for managing intense emotion.
- Environment and exposure. Growing up in a household affected by substance use may normalize it and make access easier.
- Overlapping conditions. Depression, anxiety, and PTSD are more common after childhood adversity, and each independently raises the risk of substance use problems.
ACE Scores Are One Factor Among Many
Adverse childhood experiences are just one predictor of substance use. Other factors, such as genetics, peer groups, co-occurring mental health conditions, the type of drug used, and the method of use may also increase the likelihood that a person becomes dependent on drugs or alcohol.[7]
People whose childhoods were marked by trauma do appear to face additional headwinds in adulthood. The useful question is what actually helps.
According to researchers who have spent years studying the effects of adverse childhood experiences, building resilienceis a meaningful part of the answer.
The brain remains capable of change throughout life, which is grounds for real optimism. Replacing survival-driven coping habits with skills that build resilience will not erase what happened, but it can meaningfully improve how a person functions and feels. A large body of research links exercise, nutrition, mindfulness, adequate sleep, and stable, supportive relationships to better physical and mental health.
Early data also points to encouraging results from community intervention and counseling for older children and adolescents with a history of childhood trauma.[8] A growing number of organizations offer programs teaching parenting skills and school readiness to help prevent traumatic stress in the first place.
What Trauma-Informed Addiction Treatment Involves
When childhood trauma sits underneath a substance use disorder, substance abuse treatment that addresses both the addiction and underlying trauma can provide more comprehensive care. Treatment that accounts for both usually includes:
- Screening for trauma history as part of the initial assessment, so care can be planned around it.
- Dual diagnosis treatment, addressing depression, anxiety, or PTSD alongside the addiction rather than sequentially.
- Individual therapy that builds emotional regulation and coping skills before working directly with traumatic material.
- Group and family work, which can address the relational patterns that often form around childhood adversity.
- Holistic and experiential approaches, giving people ways to reconnect with their bodies and settle their nervous systems.
- Aftercare planning, since the skills that replace old coping strategies need time and support to become durable.
Trauma work is paced deliberately. A good program will not push someone into revisiting painful history before they are stable enough to do it safely.
Frequently Asked Questions
Does a high ACE score mean I will develop an addiction?
No. A high ACE score indicates elevated statistical risk across a population, not an individual outcome. Many people with high scores never develop a substance use disorder, and protective factors like a stable relationship with one supportive adult can make a real difference.
Can you develop an addiction with an ACE score of zero?
Yes. Childhood adversity is one risk factor among several, including genetics, mental health conditions, environment, and the substance involved.
Do I need to talk about my childhood in addiction treatment?
Not before you are ready. Trauma-informed treatment prioritizes stability and safety first, and dual diagnosis treatment Florida programs can address co-occurring mental health concerns alongside substance use when appropriate.
Is it too late to address childhood trauma in adulthood?
No. The nervous system and brain remain adaptable throughout life, and adults regularly see meaningful improvement in how they cope, relate, and function through treatment.
Should I take an ACE questionnaire on my own?
It can be a useful starting point for self-understanding, but the score is most helpful when discussed with a clinician who can put it in context. If reading through the list brings up difficult feelings, that is a reasonable moment to reach out for support.
It’s Not Too Late To Address Childhood Trauma and Addiction
If you are living with the effects of adverse childhood experiences and addiction, you still have the opportunity to learn new skills and better ways to manage life’s stressors.
The professional and compassionate staff at Spring Gardens Recovery can create a custom program to guide you on your path to sobriety. Our holistic approach to healing focuses on self-awareness and self-discovery, helping you work through mental roadblocks and develop new ways to cope. Our program is designed to equip you to face challenges with a stronger foundation for lasting recovery.
Contact us to learn more about the type of program that is most appropriate for you.
Sources:
[3] https://pediatrics.aappublications.org/content/122/2/e298
[5] https://pubmed.ncbi.nlm.nih.gov/12612237/
[6] https://pubmed.ncbi.nlm.nih.gov/28088740/
[7] https://www.healthline.com/health/addiction/risk-factors#type-of-drug