ACE Scores: What Your Childhood Experiences Mean for Your Health

What Are ACEs?

Adverse childhood experiences (ACEs) are potentially traumatic events that occur before the age of 18. The term comes from a landmark study conducted by the Centers for Disease Control and Prevention (CDC) and Kaiser Permanente in the late 1990s. That study identified 10 categories of childhood adversity that are associated with increased risk for a wide range of health problems later in life.

The 10 ACE categories fall into three groups:

Abuse (3 categories):

• Physical abuse — being hit, beaten, kicked, or physically harmed by a parent or household adult
• Emotional abuse — being regularly put down, sworn at, humiliated, or made to feel afraid of physical harm
• Sexual abuse — any sexual contact or conduct with a household adult or person at least 5 years older

Neglect (2 categories):

• Physical neglect — not having enough to eat, having to wear dirty clothes, or lacking protection or adequate care
• Emotional neglect — feeling unloved, unsupported, or that family members did not look out for each other

Household dysfunction (5 categories):

• Substance use in the household — living with someone who had a problem with alcohol or used substances
• Mental health challenges in the household — living with someone who experienced depression, mental health conditions, or who attempted suicide
• Witnessing domestic violence — seeing or hearing a mother or stepmother being physically harmed
• Parental separation or divorce — parents separating or divorcing during childhood
• Incarceration of a household member — a household member going to prison

Each category counts as one point, regardless of how many times the experience occurred. The total number of categories experienced (0 to 10) is your ACE score.

The Original CDC-Kaiser ACE Study

The original ACE study, published in 1998 by Dr. Vincent Felitti and Dr. Robert Anda, surveyed more than 17,000 adults enrolled in a Kaiser Permanente health plan in San Diego. Participants completed questionnaires about childhood experiences and provided detailed medical histories.

The findings were striking. Nearly two-thirds of participants reported at least one ACE, and more than one in five reported three or more. The study revealed a powerful dose-response relationship: as the number of ACE categories increased, so did the risk for a wide range of health and social problems. This relationship held even after controlling for factors like age, sex, race, and education.

The study was groundbreaking because it connected childhood adversity — previously considered a social issue — directly to leading causes of death and disease in adults. It transformed how researchers and clinicians understand the relationship between early life experiences and long-term health.

What Each ACE Category Covers

The ACE questionnaire asks about specific experiences that occurred during your first 18 years of life. Each question corresponds to one of the 10 categories listed above. The questions are designed to be straightforward and answerable with a yes or no response.

It is important to understand what the ACE questionnaire does not capture. The original 10-item tool does not include experiences such as bullying, community violence, racism, poverty, foster care placement, or the death of a parent. Expanded ACE questionnaires exist that address some of these additional adversities, but the original 10 categories remain the most widely studied and validated.

Your ACE score reflects the breadth of adversity — how many different types of experiences you had — not the severity, frequency, or duration of any single experience. Two people with the same ACE score may have had very different childhoods.

How ACE Scores Relate to Health Outcomes

The CDC-Kaiser study established a dose-response relationship between ACE scores and health outcomes. This means that as the number of ACE categories increases, the likelihood of experiencing certain health problems also increases — in a graded, step-by-step pattern.

This relationship is not about any single ACE causing a specific disease. Instead, chronic childhood adversity can affect brain development, immune function, hormonal systems, and the way the body responds to stress over time. Prolonged activation of the stress response — sometimes called toxic stress — can alter biological systems in ways that increase vulnerability to both physical and mental health conditions decades later.

However, increased risk is not the same as certainty. Many people with high ACE scores do not develop the associated health conditions, and many people with low or zero ACE scores do. ACE scores identify patterns across populations, not predictions for individuals.

Specific Health Risks by ACE Score

Research from the original study and subsequent investigations has identified the following associations for individuals with an ACE score of 4 or higher, compared to those with an ACE score of 0:

These statistics describe population-level trends. They do not predict what will happen to any specific person. Many factors — including genetics, environment, relationships, and access to support — influence whether increased risk translates into actual health outcomes.

ACE Scores Are NOT Destiny

This is the most important section of this article. Your ACE score is not a life sentence. It describes what happened to you as a child — it does not determine what will happen to you as an adult.

The ACE study was designed to identify risk factors across large populations. It was never intended to predict individual outcomes. Many people with high ACE scores live long, healthy, connected lives. Resilience — the ability to adapt and recover from adversity — is real, measurable, and buildable at any age.

Neuroscience research has shown that the brain retains significant capacity for change and healing throughout life, a property known as neuroplasticity. The effects of early adversity, while real, are not permanent or irreversible. With the right support and resources, people can and do recover.

If you have a high ACE score, the appropriate response is not fear — it is awareness. Awareness creates the opportunity to seek support, build protective factors, and make informed choices about your health and well-being.

What Protects Against ACE Impact

Research has identified several protective factors that can buffer the impact of adverse childhood experiences. These factors can be developed and strengthened at any stage of life:

• Supportive relationships — having at least one stable, caring adult during childhood is one of the most powerful protective factors. In adulthood, strong social connections continue to provide resilience
• Community connection — belonging to a community — whether through faith, cultural groups, volunteer work, or neighborhood ties — provides meaning, identity, and mutual support
• Therapy and counseling — evidence-based approaches such as trauma-focused cognitive behavioral therapy, EMDR, and somatic experiencing can help process and integrate adverse experiences
• Healthy coping strategies — regular physical activity, mindfulness and meditation, creative expression, and adequate sleep all support nervous system regulation and stress recovery
• Education and economic stability — access to education and stable employment provides resources and a sense of agency that supports well-being
• Self-compassion — understanding that childhood adversity was not your fault, and treating yourself with the same kindness you would offer a friend, is a foundational step in healing

The Role of Trauma-Informed Care

Trauma-informed care is an approach that recognizes the widespread impact of trauma and integrates that understanding into every level of service delivery. Rather than asking "What is wrong with you?" it asks "What happened to you?"

The core principles of trauma-informed care, as outlined by SAMHSA, include safety, trustworthiness and transparency, peer support, collaboration and mutuality, empowerment and choice, and cultural humility. These principles apply across healthcare settings, schools, workplaces, and social services.

Trauma-informed care does not require you to disclose your history. It creates environments where people with adverse experiences are more likely to feel safe, respected, and supported — whether or not they share their story. If you are seeking professional help, looking for providers or organizations that practice trauma-informed care can make a meaningful difference in your experience.

Intergenerational Trauma

Research increasingly shows that the effects of adverse childhood experiences can be passed from one generation to the next. This is known as intergenerational or transgenerational trauma. It can occur through several pathways:

• Behavioral patterns — parents who experienced adversity may, without support, repeat patterns of stress, conflict, or disconnection in their own families
• Epigenetic changes — emerging research suggests that chronic stress can alter gene expression in ways that may be transmitted to offspring, potentially affecting stress response systems
• Environmental factors — poverty, housing instability, and community violence often persist across generations, creating ongoing exposure to adversity

The good news is that intergenerational transmission of trauma is not inevitable. When a person addresses their own adverse experiences — through therapy, supportive relationships, or community resources — they can interrupt the cycle and create a different environment for the next generation. Healing is not only personal; it is generational.

Using the ACE Questionnaire Tool

The ACE questionnaire is a brief, 10-item self-report screening tool. Each question asks about a specific category of adverse experience that may have occurred before your 18th birthday. You answer yes or no to each question, and the total number of "yes" responses is your ACE score.

The questionnaire takes only a few minutes to complete. On this site, your answers are processed entirely in your browser — nothing is stored, transmitted, or recorded. You can take the screening privately and use the results to inform a conversation with a healthcare professional if you choose.

It is worth noting that the ACE questionnaire is a screening tool, not a clinical assessment. It may indicate areas that could benefit from further exploration with a qualified professional. A screening result is a starting point, not a conclusion.

What to Do With Your Score

If you have taken the ACE questionnaire, here are some constructive next steps — regardless of your score:

• Practice self-compassion — whatever your score, acknowledge that childhood adversity was not your fault. Many people carry unnecessary shame about experiences that were beyond their control
• Consider professional support — if your score is 4 or higher, or if reflecting on these experiences brings up significant distress, connecting with a trauma-informed therapist can be valuable. You do not need a crisis to benefit from professional support
• Explore support groups — peer support from others with similar experiences can reduce isolation and provide practical strategies for healing. Many communities offer both in-person and online groups
• Screen for related concerns — adverse childhood experiences are associated with increased risk for PTSD, depression, and substance use. Taking additional screening tools like the PCL-5 PTSD screening can provide a more complete picture of your current well-being
• Build protective factors — invest in relationships, physical health, stress management, and community connection. These factors actively counteract the long-term effects of childhood adversity
• Share with a provider — if you feel comfortable, sharing your ACE score with your healthcare provider can help them understand your health history more fully and offer appropriate support