Think your cortisol is too high? Expert reveals the truth behind viral wellness craze

Social media feeds have recently been flooded with wellness influencers warning about the dangers of high cortisol.

But is this complex hormone truly something people should try to eliminate, or is it a victim of online hyperbole?

In a recent Fox & Friends segment, Ainsley Earhardt sat down with New York City-based certified dietitian and nutritionist Amy Shapiro to separate fact from fiction.

Despite its reputation, cortisol is a biological necessity. Produced by the adrenal glands, it is the body's primary stress hormone.

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"It does help us in many ways," Shapiro said during the segment.

"It helps us get out of bed in the morning. You have a cortisol spike. Gives you that energy to get up and go. It helps to protect you when you have to run ... It helps support your immune system."

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Under normal conditions, cortisol levels follow a natural 24-hour cycle, peaking in the morning to help the body wake up and gradually dropping to their lowest point at night. 

Problems arise when the body remains in a prolonged state of stress, causing cortisol levels to stay elevated.

According to Mayo Clinic, chronic exposure to high cortisol can disrupt almost all of the body's processes, contributing to anxiety, sleep issues and weight gain.

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Shapiro highlighted these as markers of cortisol imbalance, along with additional warning signs like frequent illness and feelings of burnout.

While influencers often attribute a puffy face ("moon face") entirely to cortisol, Shapiro said this is often misleading.

"It could be your diet, it could be high salt, it could be [inadequate] hydration. Maybe we're not all walking around with these taxed cortisol levels."

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Those who suspect their levels are off-balance shouldn't rely on self-diagnosis, the expert advised. A doctor can order saliva or blood tests to accurately measure hormone levels.

Managing spikes starts with identifying and avoiding common daily triggers. Shapiro pointed out that caffeine can increase cortisol levels, especially when consumed on an empty stomach.

She added that exercising and doing high-intensity interval training late at night can also cause a spike in cortisol. "It's better to do it in the morning when your cortisol levels are naturally high," she recommended.

Shapiro also cautioned against "eating ultraprocessed foods, eating high-sugar foods, drinking soda and not eating a balanced diet," as well as "high stress, not getting adequate sleep, not moving your body."

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"Recognizing that we do live in a high-stress society right now, taking time to manage our stress is a good idea," she added.