February 2025 in “Iraqi Journal of Science” PCOS patients have higher LDH and lower cortisol, dopamine, zinc, and vitamin D3, which may contribute to their symptoms and obesity.
February 2023 in “Journal of medical primatology” Pair housing reduces stress behaviors and health issues in quarantined rhesus macaques.
Measuring cortisol in hair can help assess adrenal function in asthmatic children using inhaled corticosteroids.
69 citations
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August 2016 in “PubMed” High stress can disrupt hair growth, but certain supplements might help.
43 citations
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January 1999 in “Endocrinology” Cortisol increases a specific protein in bone cells, which may help explain its negative effects on bone.
567 citations
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October 2007 in “Clinical and investigative medicine” Hair cortisol can be used to measure long-term stress exposure.
199 citations
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July 2007 in “General and Comparative Endocrinology” Hair cortisol can reliably indicate chronic stress in cats and dogs.
24 citations
,
April 2008 in “Fertility and sterility” Pioglitazone improved insulin sensitivity and altered cortisol metabolism in PCOS patients.
22 citations
,
January 2010 in “Clinical Medicine Insights Endocrinology and Diabetes” Forearm hair has more cortisol than lower leg hair.
9 citations
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November 1980 in “Geburtshilfe und Frauenheilkunde” Fenoterol treatment causes increased hair growth due to higher metabolism in hair follicles, not hormones.
Gender-diverse individuals face more depression and anxiety, possibly due to unique stress profiles.
December 2025 in “Therapeutic Drug Monitoring” Pulverization extracts more cortisol from hair, but any method works due to individual differences.
December 2025 in “Biology Bulletin Reviews” Hair cortisol can indicate animal stress but varies with many factors.
January 2023 in “Research Square (Research Square)” Hair cortisol may be a good indicator of recent mood in people with bipolar disorder.
May 2021 in “Journal of the Endocrine Society” A patient produced cortisol after adrenalectomy, possibly due to residual tissue or other body parts making steroids.
August 2019 in “Journal of archaeological science: Reports/Journal of archaeological science: reports” Ancient hair can preserve hormones, revealing health and fertility insights.
May 2016 in “Endocrine Abstracts” Proximal hair cortisol is a reliable tool for diagnosing Cushing's Syndrome.
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.
16 citations
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March 2013 in “Clinica Chimica Acta” Cortisol and cortisone release from hair increases in steps over time during incubation.
August 2021 in “Asian Journal of Pharmaceutical and Clinical Research” Plant extracts in shampoo improved hair thickness and density in men with hair loss.
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.
High-stress mothers had lower hair cortisol than low-stress mothers, and daughters' cortisol was linked to their stress response.
November 2022 in “Innovation in aging” Older adults in Puerto Rico often couldn't be tested for hair cortisol due to refusal or lack of hair, with race and hair products affecting results.
51 citations
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November 2005 in “Journal of Medical Primatology” Alopecia in captive rhesus macaques is affected by season, sex, age, housing, and stress, with complex links between stress hormones and hair loss.
44 citations
,
November 2018 in “Journal of applied ecology” Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.
94 citations
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April 2002 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” A new gene mutation causes female pseudohermaphroditism due to glucocorticoid resistance.
66 citations
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May 2014 in “Conservation Physiology” Grizzly and black bears have different stress and hormone responses to salmon availability, influenced by nutrition and social competition.
38 citations
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August 2012 in “Biochemical and biophysical research communications” Human leukocytes and beard hair follicle cells have internal daily clocks, and PER1 and PER3 genes may indicate individual circadian rhythms.
16 citations
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September 1990 in “Fertility and sterility” Ketoconazole can treat ovarian hyperandrogenism but should be used cautiously with monitoring and birth control.
13 citations
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January 2016 in “Annals of Dermatology” Stress can slow hair growth by affecting certain cells and pathways.