30 citations
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May 1991 in “Psychosomatics” Some psychiatric medications can cause reversible hair loss.
28 citations
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May 2017 in “Molecular ecology” Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.
13 citations
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December 2018 in “Development, Growth & Differentiation” Sex hormones, especially estradiol, can change chicken feather shapes and colors.
1 citations
,
October 2025 in “Scientific Reports” Mandarin duck sail feathers change with seasons due to hormones and genetic regulation.
1 citations
,
October 2013 Different ectodermal organs like hair and feathers regenerate differently, with specific stem cells and signals involved in their growth and response to the environment.
January 2006 in “Elsevier eBooks” Cats with Feline Symmetrical Alopecia can regrow hair with proper treatment based on the specific cause, including diet, medication, or stress management.
Brunsting-Perry pemphigoid can cause scarring hair loss and may be underdiagnosed.
203 citations
,
December 2004 in “Journal of The American Academy of Dermatology” Early diagnosis and treatment, using finasteride, minoxidil, or hair transplantation, improves hair loss outcomes.
52 citations
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October 2004 in “Veterinary dermatology” Melatonin and mitotane treatment led to hair re-growth in 62% of dogs with Alopecia X, but this was not always linked to normal hormone levels.
November 2022 in “Research Square (Research Square)” The research provides insights into hair follicle growth in forest musk deer by identifying key genes and pathways involved.
March 2022 in “Journal of Clinical Case Studies Reviews & Reports” COVID-19 can cause or worsen skin conditions and might show early signs of infection.
March 2022 in “Journal of clinical case studies reviews & reports” COVID-19 can cause different skin issues, including rashes and hair loss.
113 citations
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March 2018 in “Biological reviews/Biological reviews of the Cambridge Philosophical Society” Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.
349 citations
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January 2005 in “The FASEB journal” Human skin can make serotonin and melatonin, which help protect and maintain it.
336 citations
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August 2015 in “European Journal of Epidemiology” The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.
291 citations
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April 2010 in “Gastroenterology” Certain proteins, Lgr5 and Lgr6, are important markers of adult stem cells and are involved in tissue repair and cancer development.
130 citations
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November 2017 in “Frontiers in Immunology” The conclusion is that Treg-targeted therapies have potential, but more knowledge of Treg biology is needed for effective treatments, including for cancer.
128 citations
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March 2006 in “American Journal of Pathology” Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.
125 citations
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September 2019 in “Journal of Clinical Immunology” Foxp3 is crucial for regulatory T cell function, and targeting these cells may help treat immune disorders.
120 citations
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November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.
99 citations
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July 2012 in “PLoS Genetics” A mutation in the KRT75 gene causes frizzle feathers in chickens.
98 citations
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December 2008 in “Journal of Investigative Dermatology” Prolactin affects hair growth and skin conditions, and could be a target for new skin disease treatments.
91 citations
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May 2003 in “American Journal of Pathology” Prolactin affects hair growth cycles and can cause early hair follicle regression.
72 citations
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February 2011 in “American Journal of Biological Anthropology” The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.
62 citations
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August 2014 in “BMC Endocrine Disorders” New findings explain how genetic changes, body clocks, and certain molecules affect tissue response to stress hormones.
60 citations
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April 2012 in “Physiology” The document concludes that understanding hair and feather regeneration can help develop new regenerative medicine strategies.
48 citations
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July 2001 in “Clinics in Dermatology” Cosmetics enhance beauty, fix defects, and intimidate enemies, with varying cultural standards and alternative methods.
40 citations
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January 2016 in “PLoS ONE” Shorter daylight increases hair growth in Cashmere goats.
36 citations
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October 2014 in “Langmuir” Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.
35 citations
,
December 2009 in “Human reproduction” Metformin taken during pregnancy increases SHBG in newborns but doesn't change other hormone levels in mothers or babies.