research Are hair cortisol levels dependent on hair growth rate? A pilot study in rhesus macaques
Monkey hair cortisol levels are not affected by how fast their hair grows.
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30-60 / 1000+ results research Children’s hair cortisol and hair testosterone concentrations in response to environmental changes: from summer holidays to school
Girls had higher stress hormone levels during school due to social and emotional issues, while boys had higher overall hormone levels with slight changes when school started.
research Does hair cortisol concentration reflect measurable regulatory biology of the HPA axis in healthy humans?
Hair cortisol concentration partly reflects HPA axis regulation but doesn't capture all its complexities.
research Measurement of Steroid Hormones in Hair: an Analysis of Hormone Dynamics in Hair Follicles
The method accurately measures steroid hormones in hair to study hormone dynamics related to hair loss.
research Segmental hair analysis - a retrospective testosterone diary?
Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.
research Differential relationships between chronic hormone profiles in pregnancy and maternal investment in rhesus monkey mothers with hair loss in the neonatal period
Monkeys with hair loss during pregnancy showed higher stress hormone levels and invested differently in their offspring.
research Relationship of Hair Cortisol Concentration With Perceived and Somatic Stress Indices: Cross-Sectional Pilot Study
Hair cortisol concentration may reflect some physiological stress but doesn't strongly correlate with perceived stress.
research Collecting Hair Samples for Hair Cortisol Analysis in African Americans
A culturally sensitive method was developed to collect hair samples from African Americans for stress analysis.
research Do follicles matter? Testing the effect of follicles on hair cortisol levels
Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
research The use of hair cortisol for the assessment of stress in animals
Hair cortisol is a reliable way to measure long-term stress in animals.
research Quantifying long-term stress in brown bears with the hair cortisol concentration: a biomarker that may be confounded by rapid changes in response to capture and handling
Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
research Sources of variation in hair cortisol in wild and captive non-human primates
Hair cortisol levels in primates are useful for stress assessment but vary by age, sex, species, and hair collection methods.
research Hair cortisol in drug-naïve first-episode individuals with psychosis
First-episode psychosis patients have higher hair cortisol levels, indicating early stress response issues.
research Is it getting in the hair? – Cortisol concentrations in native, regrown and segmented hairs of cattle and pigs after repeated ACTH administrations
Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.
research Analysis of Hair Cortisol as an Indicator of Chronic Stress in Pigs in Two Different Farrowing Systems
Pigs in farrowing crates and loose-housing systems showed no difference in chronic stress levels as measured by hair cortisol.
research Study on dissolution mechanism of cortisol and cortisone from hair matrix with liquid chromatography–tandem mass spectrometry
Cortisol and cortisone release from hair increases in steps over time during incubation.
research Temporary Relocation during Rest Periods: Relocation Stress and Other Factors Influence Hair Cortisol Concentrations in Horses
Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.
research Children’s hair cortisol as a biomarker of stress at school: a follow-up study
Children with lower inhibitory control experience more stress when starting third grade.
research Correlation between high hair cortisol level and intracranial aneurysm rupture
High levels of cortisol in hair are linked to a greater risk of brain aneurysm rupture.
research Human Hair as a Testing Substrate in the Era of Precision Medicine: Potential Role of ‘Omics-Based Approaches
Human hair shows promise for non-invasive medical testing, but more research is needed to standardize its use.
research Parity-related variation in cortisol concentrations in hair during pregnancy and in the postpartum period: a prospective cohort study
First-time mothers had higher stress hormone levels in late pregnancy than mothers who had given birth before.
research Determining Cortisol in Animal Hair as a Marker of Chronic Stress
Hair cortisol can indicate animal stress but varies with many factors.
research Coat color and other factors influencing hair cortisol concentration in domestic cats
Black hair in cats has higher cortisol levels than white hair.
research Coat condition, housing condition and measurement of faecal cortisol metabolites - a non-invasive study about alopecia in captive rhesus macaques (Macaca mulatta)
Alopecia in captive rhesus macaques is affected by season, sex, age, housing, and stress, with complex links between stress hormones and hair loss.
research Within-person changes of cortisol, dehydroepiandrosterone, testosterone, estradiol, and progesterone in hair across pregnancy, with comparison to a non-pregnant reference group
Hormone levels in hair change during pregnancy, with progesterone increasing significantly compared to non-pregnant women.
research Corticosterone inhibits GAS6 to govern hair follicle stem-cell quiescence
Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.
research Rhythmic expression of circadian clock genes in human leukocytes and beard hair follicle cells
Human leukocytes and beard hair follicle cells have internal daily clocks, and PER1 and PER3 genes may indicate individual circadian rhythms.
research Hair Analysis Provides a Historical Record of Cortisol Levels in Cushing's Syndrome
Hair analysis can track past cortisol levels in Cushing's Syndrome patients.
research An Investigation of Hair Cortisol Concentration across Body Sites and within Hair shaft
Forearm hair has more cortisol than lower leg hair.
research Hair and Scalp Variation Related to Gender
Gender affects hair and scalp characteristics, with differences in hormone responses, graying patterns, and trace metals.