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Articles on Cortisol

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Rising temperatures are not just directly lethal to fish but also result in hormonal imbalances which threaten entire populations. (Jonathan Munera L.)

How climate change-induced stress is altering fish hormones — with huge repercussions for reproduction

Climate change is causing higher levels of stress in fish, and the resulting hormonal imbalances are fundamentally altering entire populations.
The stress of experiencing high levels of community violence harms entire families. skynesher/E+ via Getty Images

Black mothers trapped in unsafe neighborhoods signal the stressful health toll of gun violence in the U.S.

Chronic stress from living with systemic racism and gun violence can lead to increased symptoms of PTSD and depression as well as elevated cortisol levels.
Daylight saving time is back again – amid some controversy. billhagolan/iStock via Getty Images Plus

Springing forward into daylight saving time is a step back for health – a neurologist explains the medical evidence, and why this shift is worse than the fall time change

Americans are divided on their preference for daylight saving time versus standard time. But research shows that our bodies fare better when aligned with the natural light of standard time.
We spend on average four hours a day looking at our phones. from www.shutterstock.com

How to deal with smartphone stress

The relationship between our smartphones and levels of the stress hormone cortisol isn’t yet clear, but people report feeling more stressed than they were before they had a smartphone.
More than 100 million American suffer from chronic pain – in which pain signals continue in the nervous system for weeks, months, or even years. pathdoc/Shutterstock.com

Chronic pain after trauma may depend on what stress gene variation you carry

Did you know that trauma, even when there is no tissue or nerve damage, can cause chronic pain? Exactly how much pain and who is most vulnerable depends on which ‘stress genes’ we carry.
You can’t resist the yawn. Chayanin Wongpracha/Shutterstock.com

What is it about yawning?

Everybody does it, but why? Scientists aren’t really sure if exhaustion, stress or some other social factor is at the root of yawning – and how it can be so contagious.

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