March 2021 in “Research Society and Development” A blue Staffordshire Bull Terrier had hair loss due to color dilution alopecia, confirmed by tests, but no treatment was pursued.
5 citations
,
February 2012 in “Australasian Journal of Dermatology” Two red-haired men with alopecia areata regrew black hair instead of red.
1 citations
,
January 2017 in “International Journal of Trichology” A new mutation caused a rare hair disorder in a Polish girl, not inherited from her family.
1 citations
,
July 2023 in “Forensic science international. Genetics” Hair protein analysis might help identify a person's ethnicity, sex, and age in forensics.
2 citations
,
January 2022 1 citations
,
January 2020 1 citations
,
June 1942 in “JAMA” Middle-aged men are usually either bald or gray, not both.
April 2025 in “Turkish Journal of Hematology” Nilotinib may cause gray hair to return to its original color.
July 1999 in “Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE” Hair analysis can reveal glucose levels in diabetic patients.
April 2018 in “Journal of Investigative Dermatology” Fat under the skin can help hair grow longer, darker, and increase cell growth.
September 1998 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Hair changes could indicate neurological diseases and help monitor treatment.
Hair can naturally regain color after greying, and this change may be linked to stress levels.
36 citations
,
September 2015 in “Forensic Science International: Genetics” Certain DNA variants can predict straight hair in Europeans but are not highly specific.
September 2016 in “Journal of The American Academy of Dermatology” The girl has a genetic hair condition causing thin hair since childhood.
April 2026 in “Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy”
September 2023 in “Cutis” A baby girl has a hair disorder called monilethrix, causing fragile hair that may improve over time.
1 citations
,
July 2001 in “Pediatrics in review” The girl has a hormonal imbalance causing increased hair growth and other male characteristics.
5 citations
,
August 2012 in “Archives of Dermatology” The immune system can cause permanent skin and hair whitening by attacking pigment cells.
January 2012 in “한국미용학회지” Graying hair is caused by changes in gene expression affecting cell functions.
17 citations
,
May 2018 in “Journal of Biomedical Optics” Certain types of human hair might help ultraviolet rays reach and damage cells, possibly leading to melanoma.
16 citations
,
October 1992 in “Journal of cutaneous pathology” Bubble hair deformity may be caused by hair shaft trauma and can improve with gentle hair care.
3 citations
,
March 2021 in “Cureus” A rare combination of halo nevi, nonsegmental vitiligo, and early gray hair can occur together.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” Bleaching and UV exposure significantly damage hair.
March 2020 in “Journal of Burn Care & Research” Hair highlighting can cause severe scalp burns, and surgery with psychological support improves recovery.
15 citations
,
January 1989 in “European Journal of Cancer and Clinical Oncology”
September 2018 in “PubMed” Hair becomes thinner, grayer, and may fall out more as people get older, and styling habits can worsen these effects.
27 citations
,
September 1988 in “PubMed” Hair follicle shape determines hair type: curly, straight, or in-between.
24 citations
,
October 2008 in “PubMed” Excessive sun exposure damages hair, causing protein loss and color changes.
14 citations
,
January 1984 in “Nutrition reports international” March 1983 in “The Journal of the American Dental Association”