May 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” A mutation in the KRT74 gene causes woolly hair by affecting hair texture.
August 2024 in “Biophysics Reviews” Mammal hairs have different internal structures.
December 2014 in “Bali Medical Journal” Females have higher estrogen receptor levels in hair than males, and these levels decrease in white hair compared to black hair.
98 citations
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June 2008 in “Human mutation” A genetic change in the EDAR gene causes the unique hair traits found in East Asians.
January 2004 in “Linchuang pifuke zazhi” Black hairs have more pigment-related genes, while gray hairs have more keratin-related genes.
7 citations
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November 2022 in “International Journal of Molecular Sciences” As Japanese males age, their hair darkens due to increased melanin, with males generally having darker hair than females.
February 2018 in “bioRxiv (Cold Spring Harbor Laboratory)” Rodent spiny hair traits are due to genetic factors other than the Edar gene.
November 2021 in “CRC Press eBooks” Hair color is determined by melanin and can be affected by genetic conditions like albinism.
3 citations
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January 2021 in “Skin appendage disorders” Hair color is not a risk factor for developing alopecia areata.
89 citations
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August 2008 in “Human genetics” The EDAR gene greatly affects hair thickness in Asian populations.