567 citations
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October 2007 in “Clinical and investigative medicine” This study described a new assay for measuring cortisol in hair and found it may serve as a useful biomarker for long-term cortisol exposure, correlating with 24-hour urine cortisol levels in non-obese subjects.
April 2026 in “Comprehensive Psychoneuroendocrinology” This study found a partial positive association between adulthood stressor exposure and hair cortisol levels, but noted inconsistent results across two studies, reflecting variability seen in previous research.
This study found that a hair growth rate of 0.75 cm/month better matches retrospective cortisol timelines and identified factors influencing hair cortisol content in children and adolescents.
1 citations
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October 2024 in “International Journal of Obesity”