This US study suggests a shift in the age of those experiencing stroke, from the old to the young, although experts say the findings need to be treated with caution.

BBC: Strokes in young people 'rising', study finds

Most of the study participants had been diagnosed with anxiety disorder or depression, but some were experiencing anxiety stemming from a health condition, such as surgery or perimenopause.

CNN: Can herbal supplements treat anxiety?

"What (this study shows) is that there's something about what we're experiencing in the U.S. compared to many other countries that seems to really lead people to, or unmask, allergic disease, " he said.

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In the study, 64 percent of men who developed long-lasting sexual side effects from the drug also reported experiencing moderate or severe symptoms of depression, and nearly 40 percent reported suicidal thoughts.

MSN: Hair-loss drug linked to severe depression in men