Which of the following is a risk associated with cannabis use in teens?

• A. Impaired memory/learning
• B. Dehydration and overheating
• C. Increased energy
• D. Sleep disturbances

Answer: (A)

Cannabis use during adolescence most directly affects cognitive functions that are still maturing, especially memory and learning. THC interacts with receptors in brain areas like the hippocampus and prefrontal cortex, which are essential for forming new memories, concentrating, and getting information into long-term recall. When teens use cannabis, encoding new information can be slower and recall can be poorer, which often shows up as difficulties with school tasks and learning new material. That impact on memory and learning is the most immediate and well-supported risk for teens.

Dehydration and overheating aren’t typical effects associated with cannabis use, and increased energy isn’t a common result either—the drug can actually cause drowsiness in many people. Sleep disturbances can occur, especially with higher doses, but the clearest, most direct risk tied to teen cannabis use is the disruption to memory and learning.