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Brain Study Shows How Young People's Minds May Lead to Self-Harm

June 8, 2026 · Nature

Scientists found differences in brain wiring and impulse control that predict risky behaviors in teens.

Scientists have discovered important clues about why some young people hurt themselves on purpose. They studied the brains and behavior of hundreds of kids to learn what makes some teens more likely to harm themselves. The research looked at brain connections and how well kids control their impulses. This could help doctors and parents spot warning signs early.

The study focused on something called non-suicidal self-injury, or NSSI. This means hurting yourself on purpose but not trying to die. About 22 out of every 100 young people do this at some point. Most kids start doing this between ages 12 and 14. They usually do it to help deal with strong feelings like anger or sadness.

Scientists looked at brain scans of kids aged 8 to 11 years old. They wanted to see if brain differences could predict who might start hurting themselves later. The brain has white matter, which is like wiring that connects different parts. When this wiring works well, people can control their emotions and actions better. When it doesn't work as well, people might act without thinking first.

The researchers found some important patterns. Kids with weaker brain connections in a part called the cingulum were more likely to hurt themselves two years later. They also found that kids who act quickly when upset were at higher risk. This trait is called negative urgency, and it means doing things without thinking when you feel bad.

The study also found differences between boys and girls. Boys were more affected by the brain wiring problems and acting without thinking when upset. Girls were more affected by seeking exciting experiences and having trouble sticking with tasks. These differences help scientists understand that boys and girls might need different kinds of help.

This research is important because it might help adults spot kids who need extra support. If doctors and parents know the warning signs, they can help kids learn better ways to handle strong feelings. The scientists say more research is needed to understand how brains develop as kids grow up. They want to learn how to help young people stay healthy and safe.

Scientists studied 209 young people aged 8-11 years to see what happens in their brains before they start hurting themselves.

Comprehension quiz preview

1. What does NSSI stand for?

  • ANon-suicidal self-injury
  • BNew student safety initiative
  • CNational suicide study investigation
  • DNeurological self-system injury

2. At what age do most kids start hurting themselves?

  • AAges 8-10
  • BAges 10-12
  • CAges 12-14
  • DAges 14-16

3. How many young people out of 100 engage in self-harm?

  • A15
  • B22
  • C30
  • D45

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