53 citations
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May 1986 in “Clinics in endocrinology and metabolism” Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.
29 citations
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September 1983 in “British Journal of Dermatology” Men with hair loss have lower SHBG and higher saliva testosterone levels, suggesting increased androgen activity.
15 citations
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May 1989 in “PubMed” Psoriasis on the scalp causes smaller oil glands and thinner hair but doesn't lead to hair loss.
8 citations
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May 1982 in “Journal of Endocrinology/Journal of endocrinology” Rat skin takes up and processes testosterone differently than other organs, with testosterone being more important for the skin than its metabolite 5α-DHT.
41 citations
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January 2000 in “Hormone Research in Paediatrics” Cortisone reductase deficiency can cause high androgen and cortisol levels and may be missed in women with similar symptoms.
May 2021 in “Journal of the Endocrine Society” A rare ovarian cancer with a good outlook was found in a woman with unusual hair growth and abdominal symptoms.
37 citations
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January 1991 in “Reproductive Toxicology” Finasteride reduces male rat fertility by causing issues with copulatory plug formation.
October 2025 in “Journal of the Endocrine Society” Early physical exams are crucial for timely Klinefelter syndrome diagnosis.
January 2025 in “Clinical and Experimental Optometry” Men with androgenetic alopecia may have more severe dry eye and meibomian gland dysfunction.
April 2026 in “Communications Biology” The development of breeding tubercles in male zebrafish relies on a specific enzyme that processes hormones.
Men with hair loss may have more body fat and different blood characteristics.
15 citations
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January 1999 in “Reproduction Fertility and Development” Merino sheep have fewer wool follicles at birth than before birth.
June 1997 in “The American Journal of Cosmetic Surgery” Understanding the science of skin stretching is crucial for safe and effective hair replacement techniques.
14 citations
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September 1999 in “Mammalian genome” The scraggly mutation causes hair loss and skin defects in mice.
January 1981 in “Purdue e-Pubs (Purdue University)” Pig skin is similar to human skin, with no major changes as they age.
1 citations
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January 2025 in “Poultry Science” Pekin duck skin quality improves with age, peaking at 5-6 weeks.
13 citations
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November 2019 in “Scientific reports” Certain drugs change freshwater snail shells to a "banana" shape.
14 citations
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December 2020 in “Journal of Investigative Dermatology” Aging causes changes in the scalp that can affect hair growth and lead to older-looking hair in women.
October 2025 in “Journal of the Endocrine Society” Ovarian hyperthecosis can cause high testosterone and symptoms like hair loss, and surgery can help improve these symptoms.
December 2010 in “OhioLink ETD Center (Ohio Library and Information Network)” Sry may regulate fatty acid metabolism and shows different expression levels in rat tissues.
3 citations
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July 1969 in “PubMed” Radiation reduced zinc levels, growth, organ weights, and hair pigment in swine.
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June 2020 in “European Radiology Experimental” 15-Gy x-ray irradiation temporarily alters rat calvaria skin without causing significant inflammation or fibrosis.
13 citations
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July 2018 in “General and comparative endocrinology” Thyroid hormones and androgens affect gene expression in frog reproductive organs differently between males and females.
16 citations
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January 1998 in “Dermatology” Androgens may worsen a natural hair resting phase, possibly leading to hair loss.
1 citations
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November 2013 Men with low testosterone or breast growth should be checked for Cushing syndrome.
10 citations
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December 2018 in “Journal of animal physiology and animal nutrition” Heat stress reduced hair growth and affected related genes in rex rabbits.
2 citations
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December 1954 in “Experimental Biology and Medicine” Fluid loss through rat skin is minimal when inactive but increases with skin activity and hair growth.
40 citations
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July 2013 in “Skin Pharmacology and Physiology” Male skin gets drier and more alkaline as it ages, which may need different skincare than women's skin.
May 2016 in “Endocrine Abstracts” The removal of the adrenal tumor improved the patient's symptoms and reduced androgen levels, indicating successful surgery.