Activin B helps start and grow hair follicles in mice.
January 2007 in “한국미용학회지” People with hair loss have smaller hair roots and less fat tissue.
March 2024 in “CRC Press eBooks” Androgenetic alopecia causes hair loss, impacting self-esteem and confidence.
1 citations
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September 2012 in “Journal of Investigative Dermatology” Aging reduces stem cell activation, leading to hair loss in mice lacking a specific enzyme.
29 citations
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September 2012 in “Dermatologic Clinics” Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.
January 2018 in “Springer eBooks” Telogen effluvium is hair loss caused by disruption of the normal hair cycle.
May 2020 in “International journal of molecular biology” Mutations in the AR gene cause hair thinning and loss.
109 citations
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June 2000 in “Development” Notch pathway activation causes abnormal hair layer development.
April 2026 in “Zenodo (CERN European Organization for Nuclear Research)” DHT increases scalp heat, causing hair loss.
May 2022 in “Dermatology practical & conceptual” Trichoscopy is crucial for diagnosing and managing androgenetic alopecia, showing increased vellus hairs, empty follicles, and fibrosis with severity.
August 2024 in “Quality in Sport” New treatments for common hair loss are needed.
13 citations
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January 2012 in “International journal of trichology” The study found that hair fragility in Pili annulati may be caused by cavities and damage within the hair shafts.
1 citations
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October 2012 in “The Journal of Dermatology” A Korean girl developed kinky hair without known cause or effective treatment.
5 citations
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December 2015 in “Dermatologic Therapy” Using a certain drug on the skin can help prevent hair loss caused by pulling on the hair.
Alopecia areata causes patchy hair loss but hair can regrow on its own.
March 2024 in “Tissue and cell/Tissue & cell” Telomerase-positive cells are mainly in the bulb matrix and outer root sheath of hair follicles.
Researchers developed a method to create artificial hair follicles that may help with hair loss treatment and research.
43 citations
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December 2006 in “The American journal of pathology” Edar signaling is crucial for controlling hair growth and regression.
77 citations
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July 2020 in “Cell” Muscles and nerves that cause goosebumps also help control hair growth.
24 citations
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May 2010 in “Hautarzt” Different hormones affect hair growth and conditions, with some causing hair loss and others promoting it.
November 2025 in “Journal of Investigative Dermatology” Disrupted cell interactions in hair follicles contribute to hair loss in androgenetic alopecia.
53 citations
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April 1985 in “Developmental Biology” Fibronectin and other basement membrane components increase during hair growth and decrease during rest.
61 citations
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January 2011 in “PloS one” Notch signaling is essential for healthy skin and hair follicle maintenance.
1 citations
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January 2012 in “International journal of trichology” Sheep hair follicle cells can grow a lot but need the dermal papilla to do so.
179 citations
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April 2012 in “Nature Communications” Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.
43 citations
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April 2010 in “Developmental Biology” Sebaceous glands can form new hair follicles when activated, but hair follicle bulges cannot.
Hair loss is caused by hormonal changes that shorten hair growth phases and shrink hair follicles.
23 citations
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June 2006 in “Journal of Investigative Dermatology” Men with baldness have higher levels of specific proteins, suggesting local hormone production may play a role in hair loss.
20 citations
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January 1995 in “Cells tissues organs” Changing light periods synchronized wool growth cycles in sheep.
January 1996 in “Springer eBooks” Hair can regrow if the sebaceous gland is intact, even if the hair root is removed.