101 citations
,
January 2014 in “Journal of Visualized Experiments” The method effectively measures long-term stress levels using hair samples.
189 citations
,
January 2014 in “Journal of Visualized Experiments” Hair cortisol analysis effectively measures long-term stress.
44 citations
,
February 2016 in “Zoology” Hair cortisol levels in primates are useful for stress assessment but vary by age, sex, species, and hair collection methods.
4 citations
,
February 2019 in “American Journal of Human Biology” Collecting hair from all scalp sections works as well as the standard method for cortisol analysis.
6 citations
,
February 2022 in “European journal of endocrinology” The method can measure multiple hormones in women's hair and may help identify hormone-related health issues.
December 2025 in “Therapeutic Drug Monitoring” Pulverization extracts more cortisol from hair, but any method works due to individual differences.
8 citations
,
October 2020 in “Infant behavior & development” Collecting hair for cortisol analysis is possible in low-income mother-toddler pairs.
Hair cortisol content can indicate cortisol exposure and varies with age, puberty, and BMI in youth.
47 citations
,
January 2016 in “MethodsX” Hair cortisol analysis is a reliable tool for monitoring long-term stress in captive chimpanzees if certain variables are controlled.
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.
9 citations
,
November 2022 in “International Journal of Molecular Sciences” The new LC-MS/MS method is more accurate and reliable than traditional immunoassays for measuring steroids in serum.
May 2016 in “Endocrine Abstracts” Proximal hair cortisol is a reliable tool for diagnosing Cushing's Syndrome.
501 citations
,
October 2008 in “Psychoneuroendocrinology” Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.
November 2025 in “Journal of Laboratory Medicine” Chronic stress increased after lockdown, especially in young adults and females.
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.
23 citations
,
August 2017 in “Scientific Reports” Darker hair may lead to higher cortisol readings, suggesting a need to adjust for hair color in studies.
2 citations
,
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.
January 2023 in “Research Square (Research Square)” Hair cortisol may be a good indicator of recent mood in people with bipolar disorder.
122 citations
,
October 2010 in “Clinica Chimica Acta” Washing hair with water or shampoo lowers cortisol levels in hair.
567 citations
,
October 2007 in “Clinical and investigative medicine” Hair cortisol can be used to measure long-term stress exposure.
50 citations
,
July 2018 in “Psychoneuroendocrinology” Hair cortisol can indicate long-term stress levels, but hair growth rate differences may affect accuracy.
13 citations
,
October 2002 in “Journal of Biochemical and Biophysical Methods” Men with male-pattern baldness have higher levels of certain testosterone metabolites and may have more active androgen metabolism.
September 2024 in “Toxicology Letters” Cortisone and cortisol levels in pregnant women’s hair increase as labor approaches, indicating higher stress.
January 2024 in “Institutional Repositories DataBase (IRDB)” The method accurately measures steroid hormones in hair to study hormone dynamics related to hair loss.
July 1998 in “Chromatographia” Women with effluvium have higher levels of certain urinary steroids, possibly due to stress and increased adrenal activity.
January 2012 in “CINECA IRIS Institutial Research Information System (University of Genoa)” Hair cortisol reliably indicates stress in rabbits.
237 citations
,
September 2018 in “Clinical Biochemistry” Hair cortisol analysis can help diagnose stress-related conditions but needs more refinement for widespread use.
199 citations
,
July 2007 in “General and Comparative Endocrinology” Hair cortisol can reliably indicate chronic stress in cats and dogs.
57 citations
,
February 1983 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Dihydrotestosterone increases the activity of an enzyme in pubic skin cells that converts testosterone to dihydrotestosterone.