March 2024 in “Veterinary sciences” Geriatric Julia Creek dunnarts often suffer from reproductive and skin diseases, impacting conservation efforts.
The white wax scale insect's genome shows that complete metamorphosis evolved earlier than thought and highlights differences in male and female development.
February 2009 in “Journal of the American Academy of Dermatology” May 2005 in “Journal of the American Academy of Dermatology” November 2025 in “BMC Genomics” Wrinkled skin in Xiang pigs is linked to gene changes related to oxidative stress and the extracellular matrix.
April 2007 in “CRC Press eBooks” Certain vitamins in wrong amounts, alcohol abuse, metals, and other toxins can cause serious brain and nerve damage.
303 citations
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August 1971 in “The American Journal of Medicine” Melanocytes are destroyed by factors needed for melanin production, causing vitiligo and gray hair.
6 citations
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January 2007 in “Actas dermo-sifiliográficas/Actas dermo-sifiliográficas” Gray hair regained color after thyroid hormone treatment.
5 citations
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July 2010 in “Journal of life sciences” Gray hair has more continuous medullation and a higher medullary diameter than black hair.
3 citations
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March 2021 in “Cureus” A rare combination of halo nevi, nonsegmental vitiligo, and early gray hair can occur together.
2 citations
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March 2020 in “Developmental cell” Stress can cause hair to turn gray by depleting pigment-producing cells through the release of a stress hormone.
1 citations
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June 1942 in “JAMA” Middle-aged men are usually either bald or gray, not both.
August 2012 in “Fertility and Sterility” Premature gray hair may indicate reduced ovarian reserve but doesn't lower pregnancy chances.
April 2026 in “International Journal of Dermatology”
May 2025 in “International Journal Of Science Technology & Management” The pomade business is viable with a 1.24 R/C Ratio.
September 1941 in “The Science News-Letter” 56 citations
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July 2001 in “International Journal of Clinical Pharmacology and Therapeutics” People obsessed with looking young may need therapy to address deeper issues.
Acitretin treatment unexpectedly darkened a patient's gray hair.
February 1945 in “New England Journal of Medicine” 2 citations
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January 2012 in “Zhongguo nongye Kexue” EGF helps secondary hair follicles grow in young gray goats.
March 1942 in “The Science News-Letter”
1 citations
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January 2021 in “Pakistan journal of zoology” Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.
4 citations
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September 1944 in “The American Journal of the Medical Sciences”
260 citations
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June 2011 in “Cell” Wnt signaling is crucial for pigmented hair regeneration by controlling stem cell activation and differentiation.
210 citations
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May 2006 in “The FASEB journal” Oxidative stress causes hair to gray by damaging and killing pigment cells.
56 citations
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December 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle cells age faster and lose pigment due to less catalase, causing hair to turn gray.
46 citations
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April 2014 in “PLOS ONE” Gray hair may be caused by lower antioxidant activity in hair cells.
35 citations
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January 2013 in “International Journal of Trichology” Kids with early graying hair often have low levels of calcium, ferritin, and vitamin D3.
31 citations
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April 2019 in “Journal of Cutaneous Pathology” Hair becomes gray and thin as we age, and while most hair loss in older people is due to genetics, there's a chance for gray hair to regain color under certain conditions.
30 citations
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April 2013 in “Journal of Investigative Dermatology” Radiation mainly affects keratinocyte stem cells, not melanocyte stem cells, causing hair to gray.