April 2026 in “PsyArXiv (OSF Preprints)” The study examined the acceptability of using hair and fingernail samples as biomarkers of physiological stress among older adolescents, with 110 participants aged 17-22. It found that 55.5% were willing to provide either sample, while 7.3% were willing to provide only hair or only nails. Willingness to provide hair samples was influenced by concerns about hair being cut and discomfort with hair collection, whereas nail sampling willingness was negatively associated only with discomfort with the idea of nail collection. Informational videos did not significantly change willingness. The study concludes that nail sampling is feasible for adolescent health research, with acceptability levels comparable to hair sampling, and highlights the need to address discomfort-related concerns to improve participation.
3 citations
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February 2024 in “Forensic Sciences Research” Mitochondrial DNA from nails and hair can be effectively analyzed for forensic use.
6 citations
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June 2024 in “Drug Testing and Analysis” Nails could be used to check long-term drug use, but more research is needed.
8 citations
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April 2017 in “International Journal of Dermatology” Applying 5% minoxidil to fingernails can significantly increase their growth rate.
1 citations
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January 2013 in “International Journal of Physical and Social Sciences” Hair and nails can show long-term changes in lead and calcium levels.
84 citations
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February 2013 in “Clinica chimica acta” Hair mineral analysis might help diagnose diseases early, but standard methods are needed.
11 citations
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September 2012 in “Chinese science bulletin/Chinese Science Bulletin” Hair mineral content can help diagnose certain common illnesses.
324 citations
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July 2020 in “Applied Water Science” Water near Abakaliki mines has high toxic metal levels, posing health risks.
36 citations
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January 2010 in “Human & experimental toxicology” Eating paradise nuts led to selenium poisoning, causing nausea, hair loss, and other symptoms in two women.
15 citations
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January 2008 in “Annales de Toxicologie Analytique” Hair test results can be misleading due to contamination, so they shouldn't be used alone to determine drug use.
8 citations
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August 2018 in “Drug testing and analysis” EtG levels in hair decrease significantly after one month of alcohol abstinence.
August 2024 in “Nihon Ika Daigaku Igakkai Zasshi” The study made scar tissue transparent to better understand its structure.
1 citations
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March 2004 in “Journal of the American Academy of Dermatology” Certain genes are linked to the risk of developing Alopecia Areata.
17 citations
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June 2016 in “Croatian Medical Journal” Patients with chronic graft-versus-host disease often have skin problems like vitiligo and alopecia areata.
13 citations
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September 1989 in “International Journal of Dermatology” Carbamazepine may cause reversible nail detachment.
67 citations
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January 2007 in “Environmental health perspectives” A woman's health issues were caused by arsenic poisoning from kelp supplements.
19 citations
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May 2005 in “Archives of Environmental & Occupational Health” All immigrant workers in the study had skin problems, with fungal nail infections, athlete's foot, and acne or folliculitis being most common, affecting their quality of life, yet they didn't seek medical help.
14 citations
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May 2020 in “Drug Testing and Analysis” A new method was created to measure metformin in hair, showing potential for monitoring treatment and medical investigations.
7 citations
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June 2021 in “Cell Proliferation” Low oxygen levels improve the function of hair and skin cells when they are in direct contact.
3 citations
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October 2021 in “Cureus” Smoking can cause yellow discoloration of upper lip hair and nails.
March 2023 in “Journal of the turkish academy of dermatology” High levels of ceruloplasmin might indicate more severe toenail fungus.
Exposure to toxic elements like mercury and lead may be linked to autism, and a higher zinc to copper ratio might help protect against it.
February 2026 in “Frontiers in Immunology” Ivarmacitinib significantly improved hair regrowth in severe alopecia areata after tofacitinib was less effective.
15 citations
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May 2013 in “American Journal of Medical Genetics - Part A” People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.
7 citations
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January 2011 in “Biochemistry Research International” Hard α-keratin has a universal molecular structure with a specific superlattice arrangement.
2 citations
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August 2022 in “World Journal of Clinical Cases” Albumin and prednisone improved symptoms in a woman with Cronkhite-Canada syndrome, revealing potential genetic causes.
1 citations
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June 2021 in “Case reports in gastrointestinal medicine” Using camphorated and mentholated chlorophenol in dental treatments can lead to severe gastrointestinal issues and hair and nail loss.
89 citations
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April 2023 in “Forensic Science International Genetics” Forensic DNA Phenotyping can now better predict appearance, ancestry, and age from DNA, but more research is needed for precise police use.
8 citations
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January 2020 in “PeerJ” Alopecia Areata causes significant structural and compositional changes in hair.
January 2026 in “Health Science Reports” Personalized hair care can help manage hair-focused repetitive behaviors.