4 citations
,
August 2019 in “General and Comparative Endocrinology” Male yak hair growth is influenced by DHT synthesis, which is promoted by 5α-red1 and AR during growth phases, while E2 may inhibit growth through ERα.
2 citations
,
May 2022 in “Clinical, Cosmetic and Investigational Dermatology” Trichoscopy and pathological examination both have unique benefits and cannot completely replace each other in evaluating hair.
12 citations
,
March 2000 in “Clinical Chemistry” Chronic DHEA supplementation slightly increases testosterone in hair but stays within safe limits.
February 2015 in “Dermatologic Surgery” Smaller reticle sizes are as accurate as the standard size for measuring hair density in hair restoration.
June 2025 in “Reports of Morphology” Body structure can help identify alopecia areata in Ukrainian men, but not predict its course.
Pangolin scales evolved for protection, hardening with age, due to keratin gene diversification.
5 citations
,
September 2017 in “Colloids and surfaces. B, Biointerfaces” Tying a knot can measure hair friction, useful for medical applications.
1 citations
,
January 2010 in “Biological and medical physics series” Human hair's structure and properties were studied using advanced microscopes and mechanical tests.
227 citations
,
January 1998 in “Journal of Endocrinology” Cells from balding scalps have more androgen receptors than cells from non-balding scalps.
Dermoscopy helps diagnose and differentiate various hair and scalp conditions.
30 citations
,
May 2010 in “British Journal of Dermatology” Intermediate hair follicles are a better model for studying hair growth and testing hair loss treatments.
January 2026 in “Journal of Radiation Research” 53BP1 focus analysis in hair cells can help estimate radiation doses.
The research found that people's hair proteins vary, especially by ethnicity and body part, which could help identify individuals in forensic science.
22 citations
,
April 1972 in “Journal of Steroid Biochemistry” Beard hair follicles convert testosterone to 5α-dihydrotestosterone most intensively.
1 citations
,
January 1993 in “Skin Pharmacology and Physiology” Hair growth drugs and epidermal growth factor do not change the calcium binding site gradient in hair follicles.
489 citations
,
June 2005 in “The FASEB Journal” Human hair follicles can produce cortisol like the body's stress response system.
28 citations
,
March 2016 in “Toxicologic pathology” Dogs could be good models for studying human hair growth and hair loss.
1 citations
,
July 2024 in “Skin Research and Technology” High-frequency ultrasound can effectively visualize and assess hair loss.
34 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Human hair growth is influenced by androgen hormones, and red deer mane follicles have similar hormone receptors.
44 citations
,
November 2018 in “Journal of applied ecology” Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.
46 citations
,
May 1986 in “Seminars in Reproductive Medicine” Testosterone and dihydrotestosterone affect hair growth, and new techniques like the folliculogram help study it, but fully understanding hair growth is still complex.
1 citations
,
October 2017 in “ecancermedicalscience” Breast cancer alters specific molecular structures in hair, which revert after cancer removal.
1 citations
,
October 2023 in “Veterinary Dermatology” Transversal biopsy sections are better than longitudinal sections for diagnosing alopecia X.
December 2013 in “Praxis medica” Using both DLQI and Skindex-16 together gives a better understanding of quality of life in skin disease patients.
August 2023 in “Skin Research and Technology” Measuring bald patch size can help grade hair loss severity, with photograph-based evaluation being more reliable.
2 citations
,
June 2012 in “Journal of Dermatological Science” The gene HDC is important for the development of hair follicles in newborn mice.
184 citations
,
November 2014 in “Developmental Cell” Hair follicle dermal stem cells are key for regenerating parts of the hair follicle and determining hair type.
April 2021 in “Journal of Investigative Dermatology” The research found genes that may protect certain scalp cells from hair loss.
245 citations
,
March 2012 in “Journal of The American Academy of Dermatology” Dermatoscopy is useful for identifying different hair and scalp conditions and can reduce the need for biopsies.
6 citations
,
April 2017 in “JAMA Dermatology” Men's hair loss is not linked to their sex hormone levels, except for lower DHEAS in those with hair loss.