Why is a teenager's brain more susceptible to the effects of alcohol?

• A. Because alcohol has a less sedating effect on teens.
• B. They take longer to sense impairment.
• C. They metabolize alcohol differently.
• D. Because it is still in a developing stage.

Answer: (D)

The main idea is that the teenage brain is still developing, so alcohol can interfere with ongoing maturation. During adolescence the prefrontal cortex, which governs judgment and self-control, matures late, and neural connections are being refined through pruning and increased myelination. Exposing the brain to alcohol during this period can disrupt these developmental processes, leading to more noticeable impairments in decision-making, memory, and learning, and it can heighten the risk of future substance use disorders. While metabolic differences between teens and adults exist, they don’t explain the heightened vulnerability as clearly as the fact that the brain’s development is unfinished, making alcohol’s impact more pronounced.