Stress Hormones

Stress Hormones

Articles tagged with "Stress Hormones".

Sleep Loss Elevates Cortisol Levels the Following Evening

Tags: Sleep Loss, Cortisol, Stress Hormones, Circadian Rhythm

October 22, 2025

How Does Sleep Loss Affect Your Stress Hormone Levels?

Sleep loss significantly elevates cortisol levels the following evening, disrupting the natural daily rhythm of this crucial stress hormone. Research shows that after sleep deprivation, cortisol levels remain elevated during evening hours when they should naturally be declining in preparation for sleep. This creates a vicious cycle where sleep loss increases stress hormones, which can then interfere with subsequent sleep quality and timing, potentially perpetuating sleep problems and chronic stress responses.

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The Cortisol Awakening Response: Your Body's Natural Morning Alarm System

Tags: Cortisol Awakening Response, Morning Cortisol, Stress Hormones, Circadian Rhythms

October 22, 2025

What Happens to Your Stress Hormones When You Wake Up Each Morning?

Your cortisol levels surge dramatically by 50-75% within the first 30 minutes of waking in what’s called the Cortisol Awakening Response (CAR), serving as your body’s natural alarm system that prepares you for the day ahead. This remarkable physiological response represents one of the largest hormonal changes in the human body, mobilizing energy, enhancing alertness, and coordinating multiple systems to transition from sleep to active wakefulness. The CAR is so consistent and important that it serves as a key marker of circadian health, stress resilience, and overall physiological function.

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