July 2025 in “International Journal of Trichology” Hair shedding increases at the end of summer due to seasonal changes.
29 citations
,
February 1987 in “General and comparative endocrinology” Thyroid and gonadal hormones control seasonal hair growth and molting in male European badgers.
37 citations
,
January 2009 in “Dermatology” Healthy women tend to lose more hair in July and April, and the least in February.
26 citations
,
August 1995 in “The journal of experimental zoology/Journal of experimental zoology” Melatonin treatment made ferrets grow their fur earlier and affected their breeding time.
February 2017 in “The journal of allergy and clinical immunology/Journal of allergy and clinical immunology/The journal of allergy and clinical immunology” Immunotherapy helped a 5-year-old boy regrow hair and prevent seasonal alopecia areata.
34 citations
,
May 2013 in “Journal of the European Academy of Dermatology and Venereology” Hair growth slows and shedding increases after childbirth, but most women don't experience excessive hair loss.
February 2012 in “Clinical and Experimental Dermatology” Many adult women experience unexplained excessive hair shedding, often starting before age 40.
2 citations
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March 2004 in “Journal of the American Academy of Dermatology” The 60-second timed hair count is a reliable and simple way to measure hair shedding at home, showing older women tend to shed more hair than younger women.
The chapter explains causes of hair loss and excessive hair growth in animals.
38 citations
,
October 1988 in “Clinics in Dermatology” Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.
2 citations
,
August 1995 in “Acta agriculturæ Scandinavica. Section A, Animal science” Adult male raccoon dogs shed their winter fur in spring and grow new fur for winter in autumn.
July 2023 in “Frontiers in veterinary science” Certain long non-coding RNAs are important for controlling hair growth cycles in sheep.
3 citations
,
February 1992 in “Journal of veterinary medicine. Series A” The farm-raised blue fox had a delayed winter coat cycle and abnormal hormone levels, but its hair growth and hormone changes were still linked.
5 citations
,
October 2013 in “Veterinary Clinics of North America: Equine Practice” Some horses lose hair without inflammation or itching due to various conditions, and while mainly a cosmetic issue, diagnosis requires examination and biopsies, and breeding is not advised if it's hereditary.
3 citations
,
August 2004 in “Veterinary Dermatology” Supplementing vitamins and minerals prevented hair loss in Icelandic horses.
June 2021 in “Research Square (Research Square)” Melatonin can increase cashmere yield by altering gene expression and restarting the growth cycle early.
1 citations
,
January 2018 in “Journal of clinical & experimental dermatology research” Some nail changes in chilblains can look like lichen planus and may be severe and long-lasting.
56 citations
,
January 2001 in “Dermatology” Teloptosis is a key point in hair loss that could help in creating prevention-focused hair care strategies.
234 citations
,
December 1996 in “Journal of The American Academy of Dermatology” Middle-aged women with chronic telogen effluvium experience increased hair shedding but usually don't get significantly thinner hair.
August 2011 in “Clinical and Experimental Dermatology” About 30% of women feel they lose too much hair, often starting before age 40, and most can't find a reason for it.
113 citations
,
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.
51 citations
,
January 2004 in “Skin Pharmacology and Physiology” The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.
43 citations
,
October 2002 in “International Journal of Cosmetic Science” All three shampoos reduced dandruff and hair loss, but ketoconazole and piroctone olamine also made hair thicker.
28 citations
,
May 2017 in “Molecular ecology” Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.
5 citations
,
October 2011 in “Small ruminant research” Goat hair growth and follicle activity change with the seasons and differ between males and females.
107 citations
,
September 2002 in “Journal of Investigative Dermatology” Researchers found that hair shedding happens mostly when new hair is growing and involves a unique process.
5 citations
,
July 2019 in “Research Square (Research Square)” Yak hair growth is influenced by genes and hormones, helping them adapt to alpine environments.
April 2024 in “Frontiers in cellular and infection microbiology” Blue light might help treat skin conditions by affecting the skin's bacteria.
25 citations
,
February 2019 in “Genomics” Cashmere and milk goats have different hair growth cycles and gene expressions, which could help improve wool production.
18 citations
,
January 2020 in “Ecology and evolution” Genes related to pigmentation, body rhythms, and behavior change during hares' seasonal coat color transition, with a common genetic mechanism in two hare species.