Take the Quiz

The ACE Quiz


There are 10 types of childhood trauma measured in the ACE Study. Five are personal — physical abuse, verbal abuse, sexual abuse, physical neglect, and emotional neglect. Five are related to other family members: a parent who’s an alcoholic, a mother who’s a victim of domestic violence, a family member in jail, a family member diagnosed with a mental illness, and the disappearance of a parent through divorce, death or abandonment. Each type of trauma counts as one. So a person who’s been physically abused, with one alcoholic parent, and a mother who was beaten up has an ACE score of three.

There are, of course, many other types of childhood trauma — racism, bullying, watching a sibling being abused, losing a caregiver (grandmother, mother, grandfather, etc.), homelessness, surviving and recovering from a severe accident, witnessing a father being abused by a mother, witnessing a grandmother abusing a father, involvement with the foster care system, involvement with the juvenile justice system, etc. The ACE Study included only those 10 childhood traumas because those were mentioned as most common by a group of about 300 Kaiser members; those traumas were also well studied individually in the research literature.

The most important thing to remember is that the ACE score is meant as a guideline: If you experienced other types of toxic stress over months or years, then those would likely increase your risk of health consequences.

What does my ACE score mean?

The study’s researchers came up with an ACE score to explain a person’s risk for chronic disease. Think of it as a cholesterol score for childhood toxic stress. You get one point for each type of trauma. The higher your ACE score, the higher your risk of health and social problems. (Of course, other types of trauma exist that could contribute to an ACE score, so it is conceivable that people could have ACE scores higher than 10; however, the ACE Study measured only 10 types.)

As your ACE score increases, so does the risk of disease, social and emotional problems. With an ACE score of 4 or more, things start getting serious. The likelihood of chronic pulmonary lung disease increases 390 percent; hepatitis, 240 percent; depression 460 percent; attempted suicide, 1,220 percent.

The Study and
Back Story


The CDC’s Adverse Childhood Experiences Study (ACE Study) uncovered a stunning link between childhood trauma and the chronic diseases people develop as adults, as well as social and emotional problems.

This includes heart disease, lung cancer, diabetes and many autoimmune diseases, as well as depression, violence, being a victim of violence, and suicide.

The first research results were published in 1998, followed by more than 70 other publications through 2015. They showed that:

  • childhood trauma was very common, even in employed white middle-class, college-educated people with great health insurance;

  • there was a direct link between childhood trauma and adult onset of chronic disease, as well as depression, suicide, being violent and a victim of violence;

  • more types of trauma increased the risk of health, social and emotional problems.

  • people usually experience more than one type of trauma – rarely is it only sex abuse or only verbal abuse.

A whopping two thirds of the 17,000 people in the ACE Study had an ACE score of at least one — 87 percent of those had more than one. Thirty-six states and the District of Columbia have done their own ACE surveys; their results are similar to the CDC’s ACE Study.

The study’s participants were 17,000 mostly white, middle and upper-middle class college-educated San Diegans with good jobs and great health care – they all belonged to the Kaiser Permanente health maintenance organization. Prior to the ACE Study, most research about effects of abuse, neglect, etc., involved poor people of color who live in the inner city. And so the notion was that it was inner-city people of color who experienced abuse, neglect, etc., not white middle-class or white upper-class people….that somehow white people of means were immune from the kinds of problems affecting people who were poor. That’s not only ridiculous, but it was just another way to perpetrate racism and classism. The ACE Study quashed that notion. So, it’s not that I’m saying that the ACE Study is credible because it was done on white people, I’m saying that the ACE Study opened the door to an understanding that ACEs are at the root of nearly all problems of physical, mental, economic and social health in humans, no matter where in the world those humans live. The ACE Study and the other research that makes up ACEs science provided an opening to a better understanding of the constructs that make up our notion of why people suffer ill health — physical, mental, economic, social — and that includes systemic racism.