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This study developed a method to measure local steroid hormone concentrations in hair, providing new insights into hormone dynamics associated with androgenetic alopecia.

Women with effluvium have higher levels of certain urinary steroids, possibly due to stress and increased adrenal activity.

This study observed fluctuations in hair cortisol levels in rabbits, indicating their HPA axis activity responded similarly to surgical and environmental stressors, suggesting potential anthropomorphic evaluations of stress.

Hair cortisol analysis can help diagnose stress-related conditions but needs more refinement for widespread use.

In this study, researchers found a significant positive association between cortisol levels in hair and feces of domestic cats and dogs, suggesting hair cortisol assays could be a viable option for monitoring chronic stress.

This study found that pubic skin fibroblasts respond to androgens, increasing 5α-reductase activity via an androgen receptor-mediated mechanism, suggesting its potential as a marker of androgen action in vitro.

Cortisol and cortisone release from hair increases in steps over time during incubation.

This study reported that pulverizing hair samples significantly improves the precision of testosterone measurement, with higher testosterone concentrations observed in men than in women.

This study suggests that using combined oral contraceptives does not increase hair glucocorticoid levels, but hair treatments should be considered as a confounder in stress biomarker assessments.

This study developed a sensitive method using LC-ESI-MS/MS for accurate and reliable measurement of nine steroid hormones in children's serum.

This study found that male patients with alopecia areata had significantly higher levels of copeptin and cortisol compared to healthy controls, suggesting these biomarkers could play a role in the condition's pathophysiology and may serve as diagnostic indicators.

This study found that measuring reproductive hormone levels in brown bear hair may effectively support non-invasive genetic sampling, though larger samples or more sensitive techniques are needed for broader application.

This study found that cortisol concentrations were significantly higher in hair samples with follicles compared to those without, suggesting potential confounding in stress assessments using different hair sampling methods.

This study found that hair cortisol concentration is a promising stress indicator in cattle but not in pigs, where external factors and lower cortisol response may interfere with its validity.

This study observed that high levels of immunoreactive cortisol in the tail hair of captive Asian elephants were often associated with stressful or distinct behavioral events, suggesting its potential for reconstructing their physiological history.

This study found that hair cortisol concentration in free-ranging brown bears is influenced by handling methods, body condition, and potentially both short- and long-term stressors.

In this study, ultraviolet irradiation and immersion in shampoo and hot water significantly reduced hair cortisol, illustrating a two-stage process of cortisol loss that may impact chronic stress assessment.

This study found that shift nurses exhibited lower circadian variations compared to daytime nurses, indicating an adjustment of their biological clocks to continuous shift schedules.

In this study, ketoconazole treatment improved acne in all women and reduced hirsutism in some, but it caused several side effects and requires careful monitoring.

In this study, pioglitazone treatment in insulin-resistant PCOS patients decreased relative 5alpha-reductase activity without significantly affecting cortisol levels or urinary cortisol excretion.

In this study, women with androgenic alopecia showed increased excretion of steroid metabolites and heightened 5α-reductase activity, suggesting these may contribute to the condition's hormonal abnormalities.

This study found that progesterone levels were higher and increased significantly throughout pregnancy, contrasting with stable levels in non-pregnant women.

This study concluded that the process of mummification disfigures facial features, making identification challenging, but commercial shrunken heads retain more defining features compared to ceremonial ones.

The researchers observed that pregnancy in rhesus monkeys was associated with an increased incidence of hair loss, though the underlying reasons remain unclear.

This study found that in domestic cats, black hair contained significantly higher cortisol concentrations than white hair, whereas ginger hair showed no significant difference compared to white hair. Additionally, a positive correlation was reported between hair cortisol levels and behavioral issues mentioned by cat owners.

This study is designed to explore how circadian rhythms are affected by obesity and mental health conditions, such as schizophrenia and bipolar disorder, using biological and lifestyle data from independently living adults.

This study observed that pregnant women experienced an increase in hair cortisol concentrations, with primiparae having significantly higher levels in the last trimester compared to multiparae.

This study reports that hair samples can be used to track chronic hormone levels, revealing stress, reproductive, and sodium regulation patterns in wildebeest related to environmental factors.

This study found that plasma protein binding significantly contributes to the shifts in glucocorticosteroid concentration ratios among blood, saliva, and hair, challenging prior assumptions about enzyme inactivation as the main factor.

This study investigated how vitamin A deficiency, certain diseases, and pregnancy affect cattle coat hair structure, finding notable keratin fibril interference under vitamin A deficiency and structural modifications in chronic renal failure, while pregnant cows exhibited superior hair tensile strength compared to non-pregnant ones.