March 2009 in “International Journal of Dermatology” The androgen receptor gene doesn't help identify women likely to have female pattern hair loss.
59 citations
,
February 2019 in “BMC Genomics” Hair length in rabbits is linked to differences in lipid metabolism and cell death.
54 citations
,
November 2001 in “Urology” The length of the CAG repeat in the androgen receptor gene affects the risk and progression of prostate cancer, BPH, infertility, and undermasculinized genitalia.
40 citations
,
January 2013 in “Frontiers in Endocrinology” Finger length ratios are not linked to the number of specific gene repeats affecting testosterone sensitivity.
5 citations
,
May 2019 in “Anais Brasileiros de Dermatologia” Finger length ratios might predict risk for skin condition in males.
4 citations
,
August 2017 in “Journal of Cosmetic Dermatology” Finger length ratio may indicate male hair loss.
October 2023 in “Dermatology practical & conceptual” Finger length ratios might help predict common hair loss.
March 2018 in “Benha Journal of Applied Sciences” Finger length ratio is not linked to hirsutism or hormone levels.
44 citations
,
January 2008 in “Fertility and Sterility” Longer CAG repeat lengths in the androgen receptor gene are linked to higher testosterone levels in women with PCOS.
26 citations
,
May 1991 in “Clinical and experimental dermatology” Oral etretinate improved hair length and reduced beading in monilethrix.
22 citations
,
May 1986 in “Clinics in endocrinology and metabolism” Certain finger length ratios and body hair patterns may predict side effects from birth control pills in women.
9 citations
,
December 2022 in “Genes” CNVs influence hair length in Tianzhu white yaks.
November 2025 in “Journal of Medicine and Health Technology” No link between finger length ratios and color blindness was found.
January 2024 in “International journal of molecular sciences” Hoxc13 gene affects wool length in Gansu alpine fine-wool sheep.
Guard hair length is positively correlated with guard hair diameter and down fiber length, but negatively correlated with variation in guard hair diameter and down fiber diameter.
33 citations
,
February 2016 in “Journal of Experimental Botany” ROOT HAIR SPECIFIC 10 (RHS10) reduces the length of root hairs in Arabidopsis plants.
12 citations
,
January 2021 in “Journal of Investigative Dermatology” Hair follicle studies suggest that maintaining telomere length could help treat hair loss and graying, but it's uncertain if mouse results apply to humans.
1 citations
,
March 2023 in “International Journal of Trichology” Platelet-rich plasma didn't increase hair length but may help keep hair follicles alive.
1 citations
,
December 2019 Bimatoprost eye drops can increase eyelash length and strength.
1 citations
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March 2017 in “Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego” Domestic cat hair varies in thickness and length, with guard hairs being longest and thickest, and all hair types mainly contain keratin.
July 2023 in “Turkish journal of veterinary research” Wild boar bristles in Balıkesir vary in length and thickness but are unsuitable for species separation.
November 2019 in “Journal of Vertebrate Biology” QIA-64 software can measure straight wire lengths accurately but needs improvement for curved wires and width measurements.
Suruhan plant extract may increase hair length but not hair mass in rabbits.
June 2017 in “Asian journal of pharmaceutical and clinical research” Green tea extract gel safely increases eyelash length.
A hair growth ointment improved hair length in a family with a genetic hair growth condition.
37 citations
,
January 2023 in “Ophthalmology and Therapy” Low-level red light therapy can shorten eye length in some myopic children.
29 citations
,
December 1994 in “Soil Biology and Biochemistry” Inoculating Arabidopsis with Azospirillum brasilense significantly increases root hair length.
23 citations
,
March 2019 in “Gene” Editing the FGF5 gene in sheep increases wool length, confirming its role in hair growth.
8 citations
,
January 2021 in “Bulletin of Experimental Biology and Medicine” ATP and IL-10 levels in hair follicles relate to follicle length and hair growth, with differences in alopecia patients.
4 citations
,
May 2024 in “Genes” KRT81 gene variations in sheep affect wool weight but not fiber length or thickness.