Question 1

Can stress really make you physically sick?

Accepted Answer

Yes. Chronic stress keeps the hormone cortisol elevated, which suppresses immune defenses and drives low-grade inflammation. Controlled studies show stressed people are more likely to catch infections and heal wounds more slowly, linking stress to heart disease, diabetes, and depression.

Question 2

How does cortisol affect the immune system?

Accepted Answer

Short bursts of cortisol help the body manage a crisis, but chronically high cortisol makes immune cells resistant to its signals. They stop responding properly, weakening defenses against real viruses while allowing harmful inflammation to smolder unchecked throughout the body.

Question 3

Does believing stress is harmful actually make it worse?

Accepted Answer

Research following nearly 30,000 adults found that high stress raised death risk mainly in people who believed stress was damaging their health. Those who experienced just as much stress without fearing it showed no elevated risk, suggesting belief shapes the physical outcome.

cortisol

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The Wound That Begins as a Worry