The Teen Brain: 7 Things to Know - National Institute of Mental Health (NIMH)

Key Insights: Understanding the Teen Brain

• Developmental Timeline: While the brain stops growing in size by early adolescence, it continues to mature and fine-tune its functions until the mid-to-late 20s.
• Prefrontal Cortex: This area, located behind the forehead, is one of the last to mature. It governs essential executive functions like planning, prioritizing, and decision-making.
• Social Influence and Risk-Taking: Teens are biologically wired to prioritize peer relationships. Combined with an immature prefrontal cortex, this can lead to increased risk-taking behavior, as the social reward often outweighs potential consequences.
• Neuroplasticity: The teen brain is highly adaptable. Engaging in challenging academics, exercise, and creative pursuits (music, art) helps strengthen brain circuits.
• Stress Sensitivity: Due to ongoing development, teens may process stress differently than adults, which can increase vulnerability to anxiety and depression.
• Sleep Patterns: Biological shifts in melatonin production cause teens to stay up later and wake up later. Chronic sleep deprivation in teens negatively impacts attention, impulse control, and academic performance.
• Mental Health Vulnerability: The convergence of physical, emotional, and neurological changes makes adolescence a peak period for the emergence of mental illnesses, including schizophrenia, depression, bipolar disorder, and eating disorders.
• Resilience: Despite these challenges, the majority of teens develop into healthy adults, and many brain changes during this period actually support long-term mental health and resilience.
• Crisis Resources: If in distress, individuals can contact the 988 Suicide & Crisis Lifeline by calling or texting 988 or visiting 988lifeline.org.