115 citations
,
August 2008 in “The Journal of Clinical Endocrinology & Metabolism” Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.
57 citations
,
February 2006 in “Journal of Investigative Dermatology” Cylindromas likely originate from hair follicle stem cells, not sweat glands.
51 citations
,
August 2013 in “Journal of Investigative Dermatology” Human skin cells can create new hair follicles when transplanted into mice.
30 citations
,
February 2017 in “Histochemistry and Cell Biology” TPA promotes hair growth by increasing stem cell activity and activating specific cell signals.
14 citations
,
May 2020 in “Archiv für Tierzucht” Researchers identified genes that may affect hair growth in Cashmere goats.
12 citations
,
January 1981 in “Springer eBooks” Environmental factors like temperature and nutrition affect hair growth, with humans showing seasonal hair growth differences.
11 citations
,
January 2018 in “Acta dermato-venereologica” Researchers found specific genes in the part of hair follicles that could help treat hair disorders.
8 citations
,
January 2016 in “Cells tissues organs” Norepinephrine helps skin cells grow, which is important for hair growth.
8 citations
,
January 1998 in “Journal of Investigative Dermatology” Topical estrogen treatments did not change hair growth in certain mouse strains, questioning previous findings on their role in hair growth control.
3 citations
,
June 2017 in “International Journal of Radiation Biology” Gamma rays did not change hair follicle density but increased white and hypopigmented hairs in mice.
1 citations
,
September 2025 in “Frontiers in Veterinary Science” Ganxi goats' skin and hair adapt to heat and humidity, possibly aided by GSDMA protein.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Higher fluence in hair removal damages hair follicles more, while lower fluence mimics natural hair regression, with long-term IPL treatments effectively reducing hair.
April 2015 in “The FASEB Journal” Nitrogen mustard causes DNA damage and structural changes in mouse skin hair follicles, but some recovery occurs after 5 days.
January 2015 in “Journal of clinical & experimental dermatology research” A protein combining parathyroid hormone and collagen helped hair regrow in mice with a hair loss condition.
Melatonin shortens the hair growth cycle by increasing PDGFA gene expression.
September 1997 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” The document concludes that treatments like oral anti-androgens, minoxidil, and topical spironolactone can be effective for hair loss in men and women.
4 citations
,
November 2017 in “PubMed” Your genes, especially IL-1a, can predict how well a hair growth treatment with platelet rich plasma will work for you.
Moderate immune responses help hair growth, while excessive responses slow it down.
May 2024 in “Lithuanian University of Health Sciences” Many patients with hidradenitis suppurativa also have severe acne and pilonidal cysts, often linked to other health problems.
95 citations
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August 2013 in “Journal of Investigative Dermatology” HPT axis hormones boost mitochondrial function and growth in hair follicles, potentially aiding hair health.
73 citations
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June 2001 in “Endocrinology” Prolactin affects when mice shed and grow hair.
50 citations
,
May 2004 in “Journal der Deutschen Dermatologischen Gesellschaft” Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.
14 citations
,
December 2021 in “International journal of molecular sciences” Growth hormone levels affect hair growth and loss, with too much causing excess hair and too little leading to hair loss.
14 citations
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June 2001 in “Endocrinology” Prolactin affects when mice shed and grow hair.
April 2021 in “Journal of Investigative Dermatology” Leontopodium alpinum extract may help reduce hair shedding by keeping hair in the growth phase longer.
36 citations
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November 2009 in “Journal of Investigative Dermatology” Prolactin may affect hair growth differently based on gender and scalp area.
1 citations
,
November 2023 in “Biomedicines” Menopause can cause hair thinning and texture changes due to hormonal and metabolic shifts.
July 2024 in “International Journal of Molecular Sciences” RF-based therapies might help treat hair loss.
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.
88 citations
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May 2005 in “Journal of Dermatological Science” Versican, a protein, is less present in thinning hair follicles and this decrease might contribute to common hair loss in men.