# What Are Adverse Childhood Experiences (ACEs)?
ACEs stands for adverse childhood experiences, a term rooted in landmark research linking difficult childhood events to long-term health risks. Parents increasingly encounter this concept when discussing their child's development or their own wellness history.
The original ACE study, conducted in the 1990s by the Centers for Disease Control and Prevention and Kaiser Permanente, tracked over 17,000 adults. Researchers found strong connections between childhood trauma and adult health problems including heart disease, diabetes, depression, and substance abuse. The study identified ten categories of adverse experiences: physical abuse, emotional abuse, sexual abuse, physical neglect, emotional neglect, parental substance abuse, parental mental illness, parental separation or divorce, incarceration of a family member, and domestic violence.
An "ACE score" reflects how many of these experiences someone endured before age 18. The research showed a dose-response relationship. People with four or more ACEs faced substantially higher risks for chronic disease and early death compared to those with zero ACEs.
Understanding ACEs matters because it reframes childhood hardship not as personal failure but as measurable adversity with documented effects. This knowledge helps parents, educators, and clinicians recognize that trauma shapes development. A child who experienced parental incarceration isn't "being difficult" during school. That child's nervous system operates differently.
The framework also emphasizes resilience factors that buffer against ACE damage. Supportive relationships, stable housing, access to healthcare, and therapy reduce negative outcomes. Neurobiologists show that secure attachment and safe environments literally rewire developing brains.
Parents should know that high ACE scores do not determine destiny. Many people with multiple ACEs build healthy lives, particularly with intervention and support. If you experienced childhood adversity, understanding your ACE score offers context for your parenting and health patterns. If