44 citations
,
July 2011 in “Dermato-endocrinology” Thyroid hormone affects skin health, with too little causing rough, pale skin and too much leading to smooth, thin skin, and may also impact wound healing and skin conditions.
2 citations
,
June 2016 in “Journal of skin and stem cell” Wet cupping blood has different components than regular venous blood, which might affect skin disorder treatments.
90 citations
,
July 2014 in “Conservation Physiology” Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.
22 citations
,
May 2019 in “Animals” High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.
1 citations
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November 2023 in “Journal of Ayurveda and Integrative Medicine” Ashwagandha serum improves hair health and quality of life in people with hair loss.
November 2025 in “Contraception” COC use doesn't increase hair stress hormone levels, but hair treatments may affect results.
157 citations
,
June 2015 in “Psychoneuroendocrinology” Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.
February 2025 in “International Journal of Molecular Sciences” Maternal melatonin improves offspring hair growth by affecting specific proteins and pathways.
19 citations
,
June 2020 in “General and comparative endocrinology” Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.
1 citations
,
July 2023 in “Psychoneuroendocrinology” Hair cortisol is a reliable marker of long-term cortisol levels and is linked to daytime saliva cortisol but not morning levels.
30 citations
,
July 2023 in “Clinical Chemistry and Laboratory Medicine (CCLM)” Cortisone in hair is a more reliable indicator of stress hormone exposure than cortisol.
50 citations
,
July 2018 in “Psychoneuroendocrinology” Hair cortisol can indicate long-term stress levels, but hair growth rate differences may affect accuracy.
69 citations
,
May 2016 in “General and Comparative Endocrinology” External factors can significantly affect hair cortisol levels, so it's not always a reliable stress marker.
296 citations
,
October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.
December 2025 in “Biology Bulletin Reviews” Hair cortisol can indicate animal stress but varies with many factors.
22 citations
,
January 2010 in “Clinical Medicine Insights Endocrinology and Diabetes” Forearm hair has more cortisol than lower leg hair.
16 citations
,
January 2021 in “Frontiers in veterinary science” Pigs in farrowing crates and loose-housing systems showed no difference in chronic stress levels as measured by hair cortisol.
12 citations
,
December 2020 in “Comprehensive psychoneuroendocrinology” Hormone levels in hair change during pregnancy, with progesterone increasing significantly compared to non-pregnant women.
September 2023 in “Diagnostics” Low vitamin D levels may affect ovulation and progesterone in infertile women.
21 citations
,
January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
5 citations
,
April 2024 in “ACS Chemical Neuroscience” A new method accurately measures nine neuroactive steroids in small blood samples, helping to study brain diseases.
April 2024 in “JCEM case reports” A woman's rare benign tumor that released both cortisol and testosterone was successfully removed, improving her health.
24 citations
,
April 2008 in “Fertility and sterility” Pioglitazone improved insulin sensitivity and altered cortisol metabolism in PCOS patients.
10 citations
,
September 2019 in “Frontiers in Veterinary Science” Older steers have higher hair cortisol levels than younger steers.
1 citations
,
February 2025 in “Journal of Endocrinological Investigation” Screen young women with menstrual issues, acne, or excess hair for high cortisol to avoid misdiagnosis.
March 2024 in “American journal of veterinary research” Clippers are the best tool for collecting dog hair for chemical tests, being fast and stress-free for the dog.
April 2023 in “Clinical Chemistry and Laboratory Medicine” The document concludes that inflammation markers can be used in diabetes, vitamin D3 affects immune pathways, hyperthyroidism changes hormone levels, androgen levels help diagnose Adrenocortical Carcinoma, erectile dysfunction is linked to diabetes, hypogonadism is common in HIV-infected males, and hormones can be biomarkers for various conditions.
2 citations
,
December 2021 in “BMC veterinary research” Long-term use of difluprednate eye drops in dogs can lead to hair loss and hormone imbalance.
January 2021 in “Case Reports” A 71-year-old woman developed male-like features due to high testosterone levels caused by a benign ovarian tumor, which was successfully removed by surgery.
August 2024 in “Archives of Women s Mental Health” Women with PCOS have more depression and stress due to high androgen levels, not obesity or insulin resistance.