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Childhood Trauma & ACES

Adverse childhood experiences (ACEs) can have a lasting impact on your health and well-being. The negative experiences of childhood trauma can affect your growth and development. They can lead to physical, mental and behavioral health problems. ACEs can also decrease your life expectancy. But with treatment, you can still lead a fulfilling life.

Signs of an adverse childhood experience (ACE) in a child
Adverse childhood experiences (ACEs) can affect a child’s emotions and behavior. They can also cause physical effects.

What are adverse childhood experiences?

Adverse childhood experiences (ACEs) are traumatic events that happen between birth and the age of 17. ACEs can cause childhood trauma that lingers long after the event occurred.

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ACEs can take a toll on your body and mind. You may have physical, mental or behavioral health challenges. But with time, you can heal. Treatment can help you put your childhood trauma behind you.

What are considered adverse childhood experiences?

Examples of adverse childhood experiences include:

  • Natural disasters
  • Violence
  • Abuse or assault
  • Neglect

Life-threatening illness

  • Loss of a friend or family member
  • Parental separation, divorce or deployment
  • Witnessing or being involved in a serious accident
  • Witnessing the death of another person

Social determinants of health may also cause childhood trauma. These are environmental factors that can lead to adverse childhood experiences with a lasting impact. These factors may include:

  • Housing instability or frequent moves
  • Feeling unsafe in your community
  • Lack of access to good healthcare
  • Food insecurity
  • Limited access to quality education
  • Financial issues
  • Discrimination

Who’s at risk of childhood trauma?

Any child can experience trauma, but certain factors raise the risk. ACEs are more common among:

What does an adverse childhood experience do to your body?

Childhood trauma causes extreme stress on your body. When you experience stress, your body releases certain hormones, like cortisol and adrenaline. These hormones help you adjust to the situation. This is called the “fight-or-flight” response. You may have:

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  • Fast heart rate
  • High blood pressure
  • Changes to your breathing
  • Dilated pupils
  • Memory issues
  • Loss of bladder control

This response is usually temporary. But long-term stress causes your stress hormones to be in constant use. This is called toxic stress. It can target your brain and change how it grows and functions.

How do adverse childhood experiences affect development?

Adverse childhood experiences can cause developmental trauma. While traumatic events can cause harm at any age, childhood trauma is more severe. That’s because a child’s brain is still growing and developing. ACEs target a child’s:

Severe or long-term stress places these parts of a child’s brain into survival mode for too long. This can weaken those parts. That, in turn, influences the way children react to certain situations as they grow older.

What are the signs of an adverse childhood experience?

After an adverse childhood experience, a child may show signs of trauma that could include:

  • Fear of other people
  • Difficulty sleeping or frequent nightmares
  • Bedwetting
  • Changes to their mood
  • Difficulty showing affection toward friends or family
  • Avoiding situations or events that relate to a traumatic experience
  • Difficulty learning in school

These signs might not be immediately present after a traumatic event. They usually develop after a child has had time to process the experience. In certain cases, a trigger — something that reminds a person of a specific event — can cause a child to react.

How does an adverse childhood experience affect an adult?

ACEs can affect an adult years after traumatic events occurred. It can impact your physical, mental and behavioral health. Childhood trauma can also affect your quality of life. Access to opportunities, like your career and education, may see an impact.

The effects of adverse childhood experiences in adulthood can include long-term (chronic) conditions. This happens because too much stress takes a toll on your body. It affects the way your cells divide and replicate. This can result in cancer. It also affects the way your heart functions by increasing your blood pressure. This can lead to heart disease.

ACEs can also decrease your overall life expectancy by nearly 20 years compared to someone who doesn’t have any ACEs.

Mental health impact

Mental health conditions that can develop in adulthood include:

  • Anxiety
  • Depression
  • Post-traumatic stress disorder (PTSD)
  • Phobias
  • Insomnia
  • Mood disorders
  • Eating disorders

Behavioral health impact

Childhood trauma makes adults more likely to participate in high-risk behaviors, including:

  • Using tobacco products
  • Misusing prescription medications
  • Using substances, including those with a high risk of addiction
  • Participating in risky sexual behaviors
  • Experiencing suicidal thoughts or engaging in self-harm

If you or a loved one is considering suicide, you can call the 988 Suicide & Crisis Lifeline.

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What is an ACE score?

An ACE score is the total number of adverse childhood experiences you faced growing up. The ACEs test asks you 10 questions about traumatic events that may have happened during your childhood. The purpose of the ACEs test is to quickly figure out if you’re at a high risk for toxic stress. If you are, your healthcare provider will ask further questions about your specific ACEs and start childhood trauma treatment.

Research suggests that a high ACE score is directly linked to negative health and wellness in adulthood. Adults with 4 or more ACEs were 12 times more likely to develop conditions, including:

  • Alcohol use disorder
  • Substance use disorder
  • Depression

What are the 10 ACEs of trauma?

Healthcare providers figure out your ACEs score by asking you about 10 potential adverse childhood experiences. If you faced any of them during childhood, they’ll give you 1 point. The 10 ACEs of childhood trauma are:

  • Domestic violence: Witnessing violence between adults at home
  • Substance use: Living with someone who misused alcohol or drugs
  • Mental health condition: Living with someone who had a mental health condition or experienced suicidal thoughts or behaviors
  • Parental separation or divorce: Losing a parent through separation, divorce or abandonment
  • Incarceration: Living with someone who went to jail or prison
  • Emotional abuse: Being sworn at, humiliated or threatened
  • Physical abuse: Being hit, pushed or physically harmed
  • Sexual abuse: Being touched or harmed in a sexual way
  • Emotional neglect: Feeling unsupported or ignored
  • Physical neglect: Lacking food, clothing or medical care

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How do you heal from childhood trauma?

Healing from childhood trauma takes time — but it’s possible. Self-care, support and therapy can make a big difference. Treatment for the effects of childhood trauma may start with steps to reduce your stress. Your healthcare provider may suggest:

  • Getting enough high-quality sleep
  • Developing healthy eating habits
  • Avoiding alcohol
  • Getting physically active
  • Exploring nature
  • Spending time with supportive loved ones

Your provider may recommend further mental health care, including:

  • Mindfulness
  • Meditation
  • Talk therapy
  • Substance use disorder treatment

A note from Cleveland Clinic

A child is constantly learning from the world around them. So, traumatic events may have a major effect on their growth and development. Adverse childhood experiences (ACEs) are common. With help from a healthcare provider, you can heal from your childhood trauma. Treatment may be lifelong, but you can overcome your ACEs. It’s important to take care of your mental health. Remember, you’re never alone.

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Care at Cleveland Clinic

As your child grows, you need healthcare providers by your side to guide you through each step. Cleveland Clinic Children’s is there with care you can trust.

Medically Reviewed

Last reviewed on 07/16/2025.

Learn more about the Health Library and our editorial process.

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