375 citations
,
July 2006 in “Journal of Investigative Dermatology” Stress can worsen skin and hair conditions by affecting the skin's immune response and hormone levels.
199 citations
,
July 2007 in “General and Comparative Endocrinology” Hair cortisol can reliably indicate chronic stress in cats and dogs.
December 2025 in “Therapeutic Drug Monitoring” Pulverization extracts more cortisol from hair, but any method works due to individual differences.
High-stress mothers had lower hair cortisol than low-stress mothers, and daughters' cortisol was linked to their stress response.
January 2012 in “Zhongguo linchuang xinlixue zazhi” Chronic stress delays hair growth in mice, but antioxidants can help reverse this.
January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Chronic stress can cause hair loss, but relaxation and gentle care can help manage it.
January 2026 in “Zenodo (CERN European Organization for Nuclear Research)” Chronic stress can cause hair loss, but relaxation and gentle care can help manage it.
Hair cortisol may help identify adrenal insufficiency in sickle cell disease patients.
November 2025 in “Contraception” COC use doesn't increase hair stress hormone levels, but hair treatments may affect results.
1 citations
,
December 2018 in “IntechOpen eBooks” Human hair shows promise for non-invasive medical testing, but more research is needed to standardize its use.
1 citations
,
January 2003 in “Benjamins eBooks” Confinement in farrowing crates doesn't increase chronic stress in sows, but hair cortisol measurements may not reliably indicate stress due to hair growth variations.
March 2025 in “Institutional Repositories DataBase (IRDB)” Hair cortisol can measure chronic stress but has inconsistent results.
October 2023 in “Animal production science” Vitamin A deficiency changes cattle hair structure, while pregnancy may improve it, suggesting hair can indicate cattle health.
122 citations
,
October 2010 in “Clinica Chimica Acta” Washing hair with water or shampoo lowers cortisol levels in hair.
22 citations
,
May 2019 in “Animals” High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.
11 citations
,
September 2020 in “Steroids” A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.
101 citations
,
January 2014 in “Journal of Visualized Experiments” The method effectively measures long-term stress levels using hair samples.
77 citations
,
March 2021 in “Nature” Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.
5 citations
,
October 2021 in “Signal Transduction and Targeted Therapy” Stress hormone corticosterone suppresses hair growth by affecting stem cell activity and Gas6 protein expression.
September 2021 in “Yearbook of pediatric endocrinology” Stress hormone stops a growth signal and keeps hair stem cells inactive, reducing hair growth.
November 2015 in “Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Veterinary Medicine” Most dogs with Cushing's syndrome have pituitary tumors causing varied symptoms, complicating diagnosis.
69 citations
,
May 2016 in “General and Comparative Endocrinology” External factors can significantly affect hair cortisol levels, so it's not always a reliable stress marker.
10 citations
,
September 2019 in “Frontiers in Veterinary Science” Older steers have higher hair cortisol levels than younger steers.
65 citations
,
December 1986 in “The Journal of Clinical Endocrinology & Metabolism” The woman had a genetic condition causing high cortisol and androgen levels, treatable with dexamethasone.
May 2018 in “The Knowledge Bank (The Ohio State University)” Occasional religious service attendees had the lowest stress levels.
28 citations
,
May 2014 in “PubMed” Higher stress levels may be linked to hair loss in rhesus macaques.
Wildebeest stress and hormone levels are influenced by food availability, human presence, and reproductive cycles.
67 citations
,
July 2016 in “Reviews in Endocrine and Metabolic Disorders” Stress can worsen skin conditions by affecting hormone levels and immune response.
May 2012 in “Neurotoxicology and Teratology” Hair cortisol can be a reliable way to measure long-term stress.
51 citations
,
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.