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research Analysis of hair cortisol levels in captive chimpanzees: Effect of various methods on cortisol stability and variability

47 citations , January 2016 in “MethodsX”

This study found that while the reproducibility of hair cortisol measurements in captive chimpanzees was high, the fineness of homogenized hair, sample weight, and extraction time influenced absolute cortisol concentrations.

research Body mass index across development and adolescent hair cortisol: the role of persistence, variability, and timing of exposure

1 citations , October 2024 in “International Journal of Obesity”

research From lifetime stressor exposure to daily stress experience: Associations with hair cortisol

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.

research The Potential of Hair Matrix for Biomarker Analysis in Schizophrenia

September 2025 in “International Journal of Molecular Sciences”

In this review, researchers explored hair as a promising tool for identifying biomarkers in schizophrenia, highlighting its potential for supporting personalized medicine through ease of sampling, though acknowledging challenges like individual variability and methodological inconsistencies.

research Within-person changes of cortisol, dehydroepiandrosterone, testosterone, estradiol, and progesterone in hair across pregnancy, with comparison to a non-pregnant reference group

12 citations , December 2020 in “Comprehensive psychoneuroendocrinology”

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

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community How long does it take after an environmental / lifestyle change for hair loss to actually slow down?

5 upvotes 11 months ago

Lifestyle changes may not significantly impact hair loss, as factors like DHT and genetics play a larger role. Some users suggest treatments like finasteride, dutasteride, and microneedling for hair growth.

community [13-Year Hair Loss Journey – Reached Norwood 7, Trying Again in 2025 (Male, 32, Vietnam)]

245 upvotes 11 months ago

A 32-year-old man from Vietnam, at Norwood 7 hair loss, is using Minoxidil, Finasteride, rosemary oil, NMN, and CoQ10 to regrow hair. Despite minor improvements, alternatives like hair systems or accepting baldness are suggested due to advanced hair loss.

community Quit vaping/smoking = 80% less loss

in Research/Science 235 upvotes 2 years ago

Quitting vaping significantly reduced hair loss for a user who was a heavy vaper and also taking finasteride. Some participants suggest nicotine's vasoconstrictive properties may worsen hair loss, while others share personal anecdotes of hair improvement after quitting smoking or vaping.

community No luck with meds, Check your Cortisol.

in Treatment 33 upvotes 2 years ago

Cortisol from stress can cause hair loss. Controlling cortisol levels improved the effectiveness of finasteride for hair regrowth.

community Low cortisol it is due the fin

7 upvotes 1 year ago

The user has been taking 1mg finasteride daily for a year with no improvement in hair loss and reports low cortisol levels, sleep issues, and anxiety changes. The conversation includes discussions on the potential effects of finasteride on cortisol and neurosteroids, with suggestions to consult a doctor and consider other factors.

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