Which item is linked to central nervous system depression?

• A. Alcohol
• B. Grapefruit
• C. Salt
• D. Vitamin C

Answer: (B)

Central nervous system depression occurs when substances slow brain activity, leading to impaired coordination, slowed thinking, and reduced alertness. Alcohol directly depresses the CNS, making it the best answer here. In older adults, even small amounts can cause more pronounced sedation and increase the risk of falls, confusion, and delirium, especially when combined with other sedating medications.

Grapefruit, while not a CNS depressant itself, can affect how some medications are metabolized, potentially increasing their levels and side effects. But it does not intrinsically depress the central nervous system. Salt and vitamin C do not cause CNS depression.