St. John's Wort use is associated with which conditions?

• A. Memory and circulation
• B. Sleep and insomnia
• C. Immune support and colds
• D. Depression and anxiety

Answer: (D)

St. John's Wort is most closely linked with mood disorders, especially depression, and it is sometimes used for anxiety symptoms. Its active components, such as hyperforin and hypericin, are thought to boost brain monoamines by inhibiting their reuptake, which can produce antidepressant effects that are most consistent for mild-to-moderate depression. It may help some people with anxiety, but the evidence is stronger for depression than for anxiety. The other options don’t reflect the herb’s main clinical use—memory and circulation, sleep and insomnia, or immune support and colds are not the primary associations. Also be aware that St. John’s Wort can interact with many medications by inducing liver enzymes, potentially reducing the effectiveness of other drugs, so it should be used with caution and under supervision.