Forensic hair analysis for drugs is now more reliable and accurate.
11 citations
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March 2023 in “Frontiers in Nutrition” Hair analysis can detect small changes in dietary zinc intake.
5 citations
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September 2017 in “Colloids and surfaces. B, Biointerfaces” Tying a knot can measure hair friction, useful for medical applications.
9 citations
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July 2011 in “Scientific Reports” Changes in the HR gene have influenced hair growth and may lead to hair loss conditions in humans.
November 2025 in “Wiley Interdisciplinary Reviews Forensic Science” Hair testing is a useful method for detecting past substance use and recent advancements improve its accuracy and reliability.
128 citations
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January 1996 in “Journal of analytical toxicology.” Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.
November 2023 in “Computational and Structural Biotechnology Journal” A single robotic system can accurately harvest and implant hair grafts, showing promise for real-world use.
February 2019 in “PubMed” The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.
208 citations
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January 2013 in “Lab on a Chip” The Multi-Organ-Chip improves the growth and quality of skin and hair in the lab, potentially replacing animal testing.
35 citations
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January 2014 in “BioMed Research International” Female pattern hair loss involves hormonal factors, genetics, and may be linked to low ferritin levels.
September 2001 in “Emergency Medicine News” Hair testing is effective for detecting long-term drug use.
47 citations
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June 2015 in “Contact Dermatitis” A standardized patch test for hair cosmetics is needed in Europe to prevent allergies, especially for hairdressers.
89 citations
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August 2008 in “Human genetics” The EDAR gene greatly affects hair thickness in Asian populations.
45 citations
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July 2009 in “Journal of human genetics” A gene variation is linked to hair thickness in Asians.
9 citations
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November 2012 in “Archives of Dermatological Research” MC4R gene variants not linked to female hair loss.
3 citations
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December 2018 in “Meta Gene” Certain gene variations increase male hair loss risk, influenced by hormone levels.
February 2026 in “Nature Communications” Inhibiting connective tissue sheath contraction may improve hair growth in male pattern baldness.
BMD-1141 effectively regrows hair in alopecia areata with less frequent dosing than current treatments.
Ovol2 is crucial for hair growth and skin healing by controlling cell movement and growth.
44 citations
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November 2018 in “Journal of applied ecology” Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.
12 citations
,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
63 citations
,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
115 citations
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May 2016 in “Clinical Medicine & Research” TSH is usually the only test needed to check thyroid function in primary care.
7 citations
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January 2018 in “International Journal of Dermatology” Syphilis can cause hair loss without other symptoms and should be considered when diagnosing unexplained hair loss.
5 citations
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July 2006 in “Contact dermatitis” Ammonium bisulfite in hair bleach can cause facial eczema.
2 citations
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January 2020 in “Journal of Experimental Social Psychology” Baldness and shaved heads change how traits are seen but don't really affect leader preferences.
1 citations
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February 2013 in “Clinical pediatrics” The baby’s hair loss was due to a rare genetic condition, not treatable by usual methods.
February 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” Tandem repeats significantly influence hair color, especially darker shades, across different ancestries.
14 citations
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September 2019 in “Forensic Science International Genetics” Hair keratin proteins can be reliably identified in hair as short as 0.12 cm, with 0.5 to 2 cm being the best length for analysis.
36 citations
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September 2015 in “Forensic Science International: Genetics” Certain DNA variants can predict straight hair in Europeans but are not highly specific.