October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
October 2025 in “Journal of the Endocrine Society” Surgery improved symptoms and normalized hormone levels in a woman with an adrenal tumor.
April 2025 in “Medical Journal of Babylon” Copeptin and cortisol levels are higher in alopecia areata patients, suggesting they could help diagnose and manage the condition.
April 2025 in “Journal of the Faculty of Medicine Baghdad” Alopecia areata patients may have higher T3 and cortisol levels, suggesting a hormonal link.
Higher pre-pregnancy BMI is linked to more stress in mothers and more behavioral problems in two-year-old children.
Hair hormone levels can indicate stress after a medically indicated abortion.
April 2024 in “JCEM case reports” A woman's rare benign tumor that released both cortisol and testosterone was successfully removed, improving her health.
May 2023 in “General and comparative endocrinology” Monkey hair cortisol levels are not affected by how fast their hair grows.
February 2023 in “Journal of medical primatology” Pair housing reduces stress behaviors and health issues in quarantined rhesus macaques.
Hair cortisol may help identify adrenal insufficiency in sickle cell disease patients.
July 2019 in “Journal of the ASEAN Federation of Endocrine Societies” The woman had a rare adrenal tumor removed, and she recovered well with no signs of the tumor returning.
Hair cortisol content can indicate cortisol exposure and varies with age, puberty, and BMI in youth.
Measuring cortisol in hair can help assess adrenal function in asthmatic children using inhaled corticosteroids.
January 2018 in “Digital Scholarship - UNLV (University of Nevada Reno)” Hair cortisol levels can indicate chronic stress in children, with differences seen between races.
Distal hair cortisol is not a reliable measure of early pregnancy cortisol levels.
February 2017 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Hair cortisol measurement is a promising, non-invasive tool for monitoring cortisol exposure over time.
August 2016 in “Psychoneuroendocrinology” High-stress mothers had lower hair cortisol than low-stress mothers, and daughters' cortisol was linked to their stress response.
May 2012 in “Neurotoxicology and Teratology” Hair cortisol can be a reliable way to measure long-term stress.
January 2012 in “CINECA IRIS Institutial Research Information System (University of Genoa)” Hair cortisol reliably indicates stress in rabbits.
April 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Hair cortisol is a reliable long-term stress marker during pregnancy.
October 2008 in “Experimental and Clinical Endocrinology & Diabetes” Long-term unemployment leads to higher stress levels.
296 citations
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October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.
157 citations
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June 2015 in “Psychoneuroendocrinology” Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.
23 citations
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August 2017 in “Scientific Reports” Darker hair may lead to higher cortisol readings, suggesting a need to adjust for hair color in studies.
22 citations
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May 2019 in “Animals” High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.
11 citations
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April 2020 in “Animals” Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.
3 citations
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June 2021 in “Journal of affective disorders” Hair cortisol and cortisone levels may affect how work stress influences depression in Chinese fishermen.
2 citations
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December 2021 in “Scientific reports” Scalp hair sweating is a significant predictor of hair cortisol levels.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.