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How Stress and Worrying Can Make You Sick

Feeling overwhelmed affects everything from digestion to stroke risk.

The advice, “Stop worrying! Stress is bad for you” is true, but as with a lot of health guidance, its vagueness makes it less impactful.

It’s like when people say that getting lots of sleep is important, or that you should eat more fiber—it’s the kind of thing people might like to do, but will probably keep forgetting to do, because it’s not immediately clear how it will make them healthier.

This video from TED Ed , written by the Emory University professor of medicine Sharon Bergquist, clarifies how worrying actually affects the body, outlining what scientists know so far about the stress-sickness connection.

As the video explains, when you’re stressed, the adrenal glands ramp up the release of the hormones cortisol, adrenaline, and norepinephrine. Adrenaline causes your heart to beat faster and can raise blood pressure. Cortisol causes changes in the blood vessels that can, over time, increase the risk of heart attack or stroke. Meanwhile, the brain relays the stress signals to the gut, which changes up its routine to allow your body to focus on the stressor. This is what’s behind that “butterflies in the stomach” feeling, but it can also lead to digestive problems and affect the composition of your gut bacteria.

Cortisol, meanwhile, can also increase the appetite and prompt the body to put on deep-belly fat. That fat releases compounds called cytokines, which in turn raise the risk of developing chronic diseases. When stress is chronic, rather than temporary, it can also dampen the functioning of the immune system, slowing healing times and making you more susceptible to infection.

Stress is most damaging for people who experience it all the time. Working long hours in a white-collar job to meet a deadline can be unhealthily stressful. But people who are constantly stressed about things like paying the rent or getting adequate childcare have the worst lot.

To mitigate some of these health consequences, Bergquist recommends viewing your stressors “as challenges you can control and master.” Easier said than done, but given the stakes, it’s probably worth trying.

( Image via Lightspring / Shutterstock.com )

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