If you've been stressed out and ignoring it—isn't everyone stressed right now?— it could be time to do something about it. That's because even though you may be basically healthy, tension is doing its stealthy damage. The latest evidence? Researchers have just linked high levels of the stress hormone cortisol to brain shrinkage and impaired memory in healthy middle-aged adults. And get this: The effect was more pronounced in women than in men.

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