July 2024 in “Journal of Investigative Dermatology” Human hair follicles have their own thyroid hormone system.
October 2025 in “Cell Reports” Regulatory T cells help hair growth by using the Cxcr4-Cxcl12 pathway.
19 citations
,
June 2020 in “General and comparative endocrinology” Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.
October 2023 in “IBRO neuroscience reports” Rat hair follicle stem cells have functional oxytocin receptors, useful for studying neuropsychiatric disorders.
46 citations
,
September 2013 in “PLOS ONE” Thyrotropin-Releasing Hormone helps heal wounds in frog and human skin.
February 2026 in “Psychoneuroendocrinology” Hair cortisol concentration partly reflects HPA axis regulation but doesn't capture all its complexities.
January 1953 in “The Lancet” Cortisone may help hair regrow by altering the local environment, with regrowth starting 3-4 weeks after treatment, but its use is not widely recommended.
178 citations
,
October 2001 in “Genes & Development” The mutated hairless gene causes hair loss by acting as a new type of corepressor affecting thyroid hormone receptors.
41 citations
,
January 2000 in “Hormone Research in Paediatrics” Cortisone reductase deficiency can cause high androgen and cortisol levels and may be missed in women with similar symptoms.
April 2020 in “Journal of the Endocrine Society” Hair cortisol measurement can help diagnose and monitor Cushing’s disease.
October 2023 in “Journal of the Endocrine Society” The desmopressin stimulation test helped identify an adrenal cause for a patient's Cushing's syndrome.
January 2018 in “bioRxiv (Cold Spring Harbor Laboratory)” Researchers found key regions in the mouse hairless gene that control its activity in skin and brain cells, affecting hair follicle function.
1 citations
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October 2020 in “International Journal of Zoology and Animal Biology” A golden lion tamarin had Cushing's disease due to a pituitary tumor, leading to its euthanasia.
January 2008 in “US endocrinology” Mutations in the glucocorticoid receptor gene cause reduced sensitivity to glucocorticoids and may lead to poor response to treatment.
1 citations
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September 2002 in “European Journal of Endocrinology” Triple H syndrome exists and can vary in symptoms.
50 citations
,
July 2018 in “Psychoneuroendocrinology” Hair cortisol can indicate long-term stress levels, but hair growth rate differences may affect accuracy.
81 citations
,
July 2008 in “The Journal of Clinical Endocrinology and Metabolism” Certain mutations in the H6PD gene cause Cortisone Reductase Deficiency by affecting hormone production.
2 citations
,
January 2009 The procedure reliably measures cortisol in rhesus macaque hair.
28 citations
,
May 2014 in “PubMed” Higher stress levels may be linked to hair loss in rhesus macaques.
34 citations
,
March 2007 in “Biochemical and Biophysical Research Communications” Thioredoxin reductase 1 does not affect glucocorticoid receptor activity in hair follicle cells.
August 2023 in “Stem cell reviews and reports” 12 citations
,
January 1999 in “Journal of Animal Science” Glucocorticoids and thyroid hormones together are essential for fetal fat development.
5 citations
,
June 2010 in “Universitas Psychologica” Progesterone helps protect against stress-related memory and behavior issues in rats.
5 citations
,
January 2025 in “Science Advances” 5α-reductase 2 is crucial for stress response in male rats.
227 citations
,
February 1989 in “The Journal of Comparative Neurology” CGRP-IR axons may help maintain and renew tissues.
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.
3 citations
,
January 2022 in “Burns & Trauma” CTHRC1 helps sweat glands recover by rebuilding nearby blood vessels.
48 citations
,
January 2011 in “Neuropharmacology” Isolation stress in rats reduces brain enzyme levels, affecting dopamine function.
189 citations
,
January 2014 in “Journal of Visualized Experiments” Hair cortisol analysis effectively measures long-term stress.
3 citations
,
October 2019 in “EMBO molecular medicine” Targeting NCoR1 can help treat heart enlargement and dysfunction.