29 citations
,
August 2017 in “Skin appendage disorders” IGF-1 may affect hair growth and loss, but more research is needed to confirm effective and safe treatments.
22 citations
,
November 2017 in “Scientific Reports” The pituitary gland functions normally even after losing most SOX2+ stem cells.
November 2025 in “International Journal of Innovative Research in Technology” Hormones significantly affect hair growth and loss, requiring personalized treatment.
49 citations
,
May 2018 in “Endocrine” Women with regular menstrual cycles and PCOS have linked kisspeptin and LH hormone patterns, unlike those with irregular cycles.
120 citations
,
November 2014 in “Biological Reviews” The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.
3 citations
,
May 2014 in “InTech eBooks” Copper deficiency may cause hair loss, and treating it could involve nutrition and hormones.
3 citations
,
June 2006 in “Expert Review of Dermatology” The document concludes that hair loss is complex, affects many people, has limited treatments, and requires more research on its causes and psychological impact.
195 citations
,
May 2003 in “Obstetrics and gynecology (New York. 1953. Online)/Obstetrics and gynecology” Most women with excess hair growth have an underlying hormonal issue, often treated with medication and hair removal methods.
50 citations
,
December 2008 in “Clinical Endocrinology” Hair loss in young men linked to higher risk of insulin resistance and metabolic issues.
46 citations
,
October 2012 in “Dermatologic Clinics” Female pattern hair loss diagnosed by scalp appearance, treated with combined therapies and targeted approaches.
38 citations
,
December 2011 in “British Journal of Dermatology” Menopause-related hormonal changes affect hair but are not the only cause of hair changes in middle-aged women.
13 citations
,
June 2020 in “BMC genomics” A specific microRNA, chi-miR-30b-5p, slows down the growth of hair-related cells by affecting the CaMKIIδ gene in cashmere goats.
12 citations
,
January 2016 in “Journal of Assisted Reproduction and Genetics” Certain gene variations are linked to higher male hormone levels in Chinese women with PCOS and insulin resistance.
11 citations
,
May 2003 in “Obstetrics and gynecology (New York. 1953. Online)/Obstetrics and gynecology” Hirsutism in women often indicates a hormonal imbalance and can be managed with a combination of hormonal treatments and hair removal methods.
7 citations
,
April 2021 in “Dermatology and Therapy” H-1 antihistamines may help with various skin conditions, but more research is needed to confirm their effectiveness.
7 citations
,
March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
4 citations
,
August 2017 in “The Nurse Practitioner” Secondary amenorrhea has many causes and requires thorough evaluation to treat and restore menstrual cycles.
3 citations
,
February 2022 in “Frontiers in cell and developmental biology” A specific RNA molecule, circCOL1A1, affects the growth and quality of goat hair by interacting with miR-149-5p and influencing cell growth pathways.
March 2026 in “Cleveland Clinic Journal of Medicine” PCOS diagnosis and management have improved with new guidelines for personalized care.
October 2018 in “InTech eBooks” The gene Foxn1 is important for hair growth, and understanding it may lead to new alopecia treatments.
March 1998 in “Journal of dermatological science” Diphencyprone initially increases mouse hair growth, then slows it, possibly due to changes in specific protein levels.
April 2012 in “Informa Healthcare eBooks” AGA is a common hair loss affecting both genders, treated with various therapies to promote regrowth and slow thinning.
40 citations
,
April 2008 in “European journal of endocrinology” Metformin and rosiglitazone both improved insulin use and hormonal symptoms in women with PCOS.
December 2025 in “IP Indian Journal of Clinical and Experimental Dermatology” Androgenetic alopecia treatments are becoming more personalized and include new therapies like topical antiandrogens and regenerative strategies.
127 citations
,
December 2007 in “Journal of Investigative Dermatology” Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.
116 citations
,
May 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.
31 citations
,
October 2016 in “PLoS ONE” The ubiquitin-mediated proteolysis pathway is crucial for hair follicle development in cashmere goats.
24 citations
,
October 2017 in “Scientific reports” Changing light exposure can affect hair growth timing in goats, possibly due to a key gene, CSDC2.
20 citations
,
February 2004 in “Veterinary dermatology” Dog hair grows back in about 14 weeks after being clipped for surgery, and the season doesn't really affect this growth rate.
18 citations
,
March 2020 in “Frontiers in Neuroendocrinology” The enzymes 5α-reductase and 3α/β-hydroxysteroid oxidoreductase help create brain-active substances from progesterone and testosterone, which could be used for treatment, but more research is needed to ensure their safety and effectiveness.