199 citations
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July 2007 in “General and Comparative Endocrinology” Hair cortisol can reliably indicate chronic stress in cats and dogs.
87 citations
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February 2009 in “PubMed” Alopecia in captive primates can be caused by many factors, so thorough testing is needed before blaming stress.
69 citations
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May 2016 in “General and Comparative Endocrinology” External factors can significantly affect hair cortisol levels, so it's not always a reliable stress marker.
22 citations
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May 2019 in “Animals” High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.
20 citations
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September 1998 in “PubMed” Gorillas in Gabon improved after protein supplements were added to their diet.
20 citations
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August 1979 in “PubMed” Adding zinc to marmosets' water improved their health, indicating their diet lacked enough zinc.
12 citations
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December 2020 in “Comprehensive psychoneuroendocrinology” Hormone levels in hair change during pregnancy, with progesterone increasing significantly compared to non-pregnant women.
10 citations
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September 2019 in “Frontiers in Veterinary Science” Older steers have higher hair cortisol levels than younger steers.
1 citations
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April 2022 in “BMC Genomics” Researchers found genes linked to hair loss in male giant pandas.
October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
354 citations
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August 1991 in “Molecular Endocrinology” Human adrenals and gonads have a unique enzyme for steroid hormone production.
August 2024 in “Latin American Journal of Development” 5α-reductase enzymes are crucial in certain disorders, and while treatment advances exist, more research on SRD5A3 is needed.
3 citations
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March 2024 in “Frontiers in Cell and Developmental Biology” Prenatal and postnatal environments both affect PCOS development and gut microbiota in mice.
296 citations
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October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.
69 citations
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August 2016 in “PubMed” High stress can disrupt hair growth, but certain supplements might help.
61 citations
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June 2022 in “Journal of Controlled Release” Dissolving microneedles show promise for delivering medication through the skin but face challenges like manufacturing complexity and regulatory hurdles.
52 citations
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January 2021 in “Journal of Thoracic Oncology” Effective vaccines and treatments are crucial for long-term COVID-19 control.
49 citations
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October 2022 in “PubMed” Hair loss is influenced by genetics, diet, and lifestyle, but more research is needed on nutrition's role.
44 citations
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November 2018 in “Journal of applied ecology” Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.
40 citations
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November 2021 in “International Journal of Molecular Sciences” Mutant keratins cause inflammation in Epidermolysis Bullosa Simplex, suggesting targeting them could help treat the disorder.
32 citations
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January 2017 in “Physiology & Behavior” New hair growth corticosterone levels are higher in diabetic mice, indicating long-term stress.
22 citations
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January 2010 in “Clinical Medicine Insights Endocrinology and Diabetes” Forearm hair has more cortisol than lower leg hair.
21 citations
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January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
19 citations
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June 2020 in “General and comparative endocrinology” Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.
18 citations
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October 2020 in “Radiation Research” Some drugs may help treat both COVID-19 and radiation injury.
16 citations
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November 2021 in “Antioxidants” Managing oxidative stress might help treat low testosterone and related chronic diseases in aging men.
16 citations
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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.
14 citations
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September 2017 in “Hereditas” Genes influence horse coat color and may help understand human skin conditions.
9 citations
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August 2024 in “Pharmacological Reviews” The intestinal lymphatic system is active and promising for targeted drug delivery and therapies.
9 citations
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July 2022 in “International Journal of Molecular Sciences” Prenatal THC exposure may harm ovarian health and fertility.