September 2004 in “Experimental Dermatology” Stress increases nerve growth factor, causing hair loss in mice.
April 2000 in “Chinese Journal of Dermatology” Epidermal growth factor (EGF) boosts hair follicle growth and speeds up hair cycle transition.
November 1995 in “Journal of Pediatric Health Care” Most hair loss in kids and teens is due to common conditions, and hair usually grows back within 6 months.
August 2015 in “Dermatologica Sinica” Men with severe hair loss may have poorer sperm quality.
January 2011 in “Journal of biological research” Endocrine disruptors may cause early hair loss.
January 2009 in “CRC Press eBooks” Androgenetic alopecia, or common baldness, is the main cause of hair loss in men due to shrinking hair follicles from hormones, and it's normal but can be a problem if it's too much or too early.
93 citations
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May 1990 in “The EMBO Journal” Mice with extra sheep genes had hair that fell out and regrew in cycles.
40 citations
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July 1989 in “Journal of Cell Science” Rat hair follicles can be kept alive in a lab for 7 days but then stop growing.
23 citations
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October 2006 in “Journal of Dermatological Science” Ethosomal minoxidil improves hair growth by penetrating deeper into skin and shortening hair cycle.
18 citations
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October 1984 in “International Journal of Dermatology” Lithium therapy may cause temporary hair loss, with possible regrowth if treatment is stopped or continued.
7 citations
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March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
July 2024 in “Journal of the American Academy of Dermatology” Oral retinoids like isotretinoin and acitretin can cause significant hair loss.
November 2022 in “Medicina” COVID-19 may cause temporary hair loss due to the body's immune response.
September 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” Changing the structure of the hair follicle's environment can affect hair quality but doesn't stop hair growth.
Caffeine in Alpecin shampoo may help prolong hair root activity and reduce hair loss.
January 2018 in “Springer eBooks” Telogen Effluvium causes more hair loss because hair moves to the resting phase too soon.
Rapid weight loss can cause temporary hair loss, but hair usually grows back.
47 citations
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May 1999 in “Reproduction” Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.
32 citations
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January 2022 in “International Journal of Molecular Sciences” Melatonin, a hormone, can help protect skin from aging by reducing stress, inflammation, and damage, and may also help treat hair loss in women.
31 citations
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March 2014 in “Journal of the European Academy of Dermatology and Venereology” BRAF inhibitors for melanoma often cause skin side effects, but they can be managed with proper care.
30 citations
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April 2014 in “Seminars in Reproductive Medicine” Diagnosing PCOS in teenagers is hard because its symptoms often look like normal puberty, and there's a need for better diagnosis methods and agreement on criteria.
24 citations
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September 1985 in “Journal of The American Academy of Dermatology” The report suggests a possible link between hair loss and hidden scalp tumors but states more evidence is needed to confirm this.
22 citations
,
April 2015 in “Current problems in dermatology” Human hair follicles have a unique metabolism that changes between growth stages and may contribute to baldness.
6 citations
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January 2013 in “Journal of Cutaneous and Aesthetic Surgery” A man with baldness had successful hair growth after transplanting body hair to his head.
November 2020 in “IntechOpen eBooks” Not getting enough minerals can lead to health problems and shorter lifespans.
May 2015 in “Journal of the American Academy of Dermatology” Certain drugs and supplements may contribute to hair loss in the frontal hairline in older women.
9 citations
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August 1986 in “Archives of Pediatrics and Adolescent Medicine” Familial sexual precocity in girls may be more common than previously thought.
3 citations
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July 2015 in “Pediatrics in review” Precocious puberty is starting earlier due to factors like obesity and chemicals, with treatment focusing on preserving height and addressing social issues.
January 2026 in “International Journal of Dermatology Research” Early recognition of loose anagen hair syndrome is important to prevent misdiagnosis and unnecessary treatments.
April 2013 in “Journal of the American Academy of Dermatology” Diabetic patients often have ingrown nails due to obesity, high blood pressure, past injuries, bad nail trimming, nail fungus, weak foot pulse, and weak knee reflex.