February 2024 in “Psychoneuroendocrinology” Higher prenatal anxiety is linked to lower cortisol levels in newborns' hair.
69 citations
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August 2016 in “PubMed” High stress can disrupt hair growth, but certain supplements might help.
10 citations
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November 2018 in “Developmental Psychobiology” Hair can effectively measure DHEA and testosterone levels in children.
Hair hormone levels can indicate stress after a medically indicated abortion.
489 citations
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June 2005 in “The FASEB Journal” Human hair follicles can produce cortisol like the body's stress response system.
September 2024 in “Toxicology Letters” Cortisone and cortisol levels in pregnant women’s hair increase as labor approaches, indicating higher stress.
17 citations
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December 1951 in “Experimental biology and medicine” Vitamin B12 and aureomycin can reverse or reduce cortisone's negative effects on body and hair growth in rats.
January 2026 in “Universität Zürich, ZORA” September 2025 in “OSF Preprints (OSF Preprints)”
July 2025 in “International Journal of Dermatology Venereology and Leprosy Sciences” Higher stress levels may worsen alopecia areata, suggesting stress management is important for treatment.
August 2019 in “Journal of archaeological science: Reports/Journal of archaeological science: reports” Ancient hair can preserve hormones, revealing health and fertility insights.
January 2026 in “Open Science Framework” January 2026 in “Open MIND” 30 citations
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July 2023 in “Clinical Chemistry and Laboratory Medicine (CCLM)” Cortisone in hair is a more reliable indicator of stress hormone exposure than cortisol.
5 citations
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January 2021 in “PeerJ” Elephant tail-hair can show past stress levels, matching times when stressful events happened.
10 citations
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September 2019 in “Frontiers in Veterinary Science” Older steers have higher hair cortisol levels than younger steers.
April 2026 in “Frontiers in Veterinary Science” Male cats have higher stress levels than females.
August 2015 in “Psychoneuroendocrinology” 1 citations
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January 1978 in “PubMed” Certain chemical changes to cortisol and progesterone can increase or decrease their ability to inhibit hair growth.
August 2016 in “Psychoneuroendocrinology” 1 citations
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October 2024 in “International Journal of Obesity” May 2026 in “Psychoneuroendocrinology” May 2026 in “Research Square” January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” The study aims to see if maternal hair cortisol levels during pregnancy relate to adverse childhood experiences.
Cows moving from tie-stall to free-stall housing had more heel problems, less joint lesions, and higher stress levels.
August 2018 in “Psychological Science” May 2026 in “Microchemical Journal” January 2026 in “SSRN Electronic Journal”