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Greying of hair

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reported that stress can cause hair to lose its pigment. An overactive immune response can destroy melanocytes and melanocyte stem cells in black-haired rats. When intentionally subjecting them to panic, they bleached their coat. The next time the rats' coat grew, there were no melanocyte stem cells
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Changes in hair colour typically occur naturally as people age, eventually turning the hair grey and then white. This normally begins in the early to mid-twenties in men and late twenties in women. More than 60 percent of Americans have some grey hair by age 40. The age at which greying begins seems
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The hair color of buried bodies can change. Hair contains a mixture of black-brown eumelanin and red-yellow pheomelanin. Eumelanin is less chemically stable than pheomelanin and breaks down faster when oxidized. The color of hair changes faster under extreme conditions. It changes more slowly under
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Excessive exposure to the sun is the most common cause of structural damage of the hair shaft. Photochemical hair damage encompasses hair protein degradation and loss, as well as hair pigment deterioration Photobleaching is common among people with European ancestry. Around 72 percent of customers
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of imatinib on melanocyte stem cells can be discovered, it is possible that a safer and less expensive substitute drug might someday be developed. It is not yet known whether imatinib has an effect on catalase, or if its reversal of the greying process is due to something else.
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There are no special diets, nutritional supplements, vitamins, or proteins that have been proven to slow, stop, or in any way affect the greying process, although many have been marketed over the years. However, French scientists treating
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is a genetic abnormality in which little or no pigment is found in human hair, eyes, and skin. The hair is often white or pale blond. However, it can be red, darker blond, light brown, or rarely, even dark brown.
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Grey or white hair is not caused by a true grey or white pigment, but is due to a lack of pigmentation and melanin. The clear hairs appear as grey or white because of the way light is reflected from the hairs.
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is also known to cause hair to become lighter, thinner, and more brittle. Dark hair may turn reddish or blondish due to the decreased production of melanin. The condition is reversible with proper nutrition.
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Grey hair may temporarily darken after inflammatory processes, after electron-beam-induced alopecia, and after some chemotherapy regimens. Much remains to be learned about the physiology of human greying.
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Slominski A, Paus R. Melanogenesis is coupled to murine anagen: Toward new concepts for the role of melanocytes and the regulation of melanogenesis in hair growth. J Invest Dermatol. 1993;101:90S–7S
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causes the onset of greying. It remains unclear why the stem cells of one hair follicle may fail to activate well over a decade before those in adjacent follicles less than a millimeter apart.
182:, overall, of those between 45 and 65 years old, 74% had some grey hair, covering an average of 27% of their head, and approximately 1 in 10 people had no grey hairs even after the age of 60. 586: 314:, both chronic and acute, may induce achromotrichia earlier in individuals than it otherwise would have. Proponents point to survivors of disasters, such as 892: 343:
accumulates in human hair over time, but whether this has any effect on hair color has not yet been resolved. A 2020 paper, published in the journal
334:. There is some evidence for chronic stress causing premature achromotrichia, but no definite link has been established. It is known that the stress 1144: 302:. Since vitiligo can cause eyelashes to turn white, the same process is believed to be involved in hair on the head (and elsewhere) due to aging. 979: 271:. At some point in the human life cycle, cells that are located in the base of the hair's follicles slow, and eventually stop producing pigment. 581: 407:
A 2005 uncontrolled study demonstrated that people 50–70 years of age with dark eyebrows but grey hair are significantly more likely to have
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research that the sun lightens their hair. The company also have identified 48 genetic markers that may influence hair photobleaching.
387:. This produced significant media coverage that further investigation may someday lead to a general non-dye treatment for grey hair. 383:. In a preliminary 2013 study, researchers treated the buildup of hydrogen peroxide which causes this with a light-activated pseudo- 427:
may cause premature greying. Smokers were found to be four times more likely to begin greying prematurely, compared to nonsmokers.
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Sebetić, Klaudija; Sjerobabski Masnec, Ines; Cavka, Vlatka; Biljan, Darko; Krolo, Ivan (October 2008). "UV damage of the hair".
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In non-balding individuals, hair may grow faster once it turns grey. Unlike in the skin where pigment production is continuous,
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The change in hair colour occurs when melanin ceases to be produced in the hair root and new hairs grow in without pigment. The
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Department of Dermatology, Academic Teaching Hospital Dresden-Friedrichstadt (14 December 2005). "Eyebrow color in diabetics".
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has recently been shown to reverse the greying process. However, it is expensive and has potentially severe and deadly
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Greying of hair is the partial or complete process of a hair becoming grey or white. It is also known as
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The order in which greying happens is usually: nose hair, hair on the head, beard, body hair, eyebrows.
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Juangbhanich C; Nitidanhaprabhas P; Sirimachan S; Areekul S; Tanphaichitr VS (June 1991). "Vitamin B
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in sand or in ice) than under wet reducing conditions (such as burials in wood or plaster coffins).
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in the hair is closely associated with stages of the hair cycle. Hair is actively pigmented in the
2350: 2221: 2040: 1895: 1890: 1355: 420: 248:(interferon regulatory factor 4) gene was announced after a study of 6,000 people living in five 87: 846: 264: 92: 771: 2216: 1925: 955: 276: 2618: 2328: 2241: 2166: 2060: 1810: 1214: 260: 253: 64: 1041:"Premature grey hair and hair loss among smokers: a new opportunity for health education?" 229:. Thus, a single hair cannot be white on the root side, and colored on the terminal side. 8: 2598: 2475: 2420: 2333: 2226: 2156: 2151: 2146: 1990: 1955: 1635: 1555: 1374: 476: 380: 206:, the cells that produce and store pigment in hair and skin. The death of the melanocyte 50: 555: 2526: 2236: 2124: 1985: 1521: 1314: 1065: 1040: 662: 635: 348:
in these damaged follicles, so white hairs sprouted, and the color loss was permanent.
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who agreed to be involved in a study and have European ancestry reported in a recent
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Etienne, Gabriel; Cony-Makhoul, Pascale; Mahon, François-Xavier (8 August 2002).
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is a patchy loss of hair and skin color that may occur as the result of an
331: 327: 319: 172:. Sometimes people are born with grey hair because they inherit the trait. 1109: 1074: 752: 2613: 2491: 2450: 2435: 2258: 2231: 2090: 2030: 1800: 1780: 1740: 1433: 1281: 1251: 694: 472: 323: 2557: 2460: 2410: 2129: 2005: 1935: 1870: 1840: 1830: 1825: 1705: 1675: 1630: 1535: 1496: 1486: 1459: 1309: 1286: 1266: 1256: 284: 280: 272: 207: 203: 179: 20: 2608: 2430: 2390: 2385: 2313: 2183: 2141: 2045: 2000: 1960: 1920: 1855: 1835: 1720: 1715: 1695: 1645: 1595: 1565: 1545: 1516: 1449: 1423: 1304: 1271: 195: 24: 918: 2470: 2425: 2415: 1980: 1930: 1790: 1750: 1710: 1690: 1685: 1660: 1655: 1640: 1625: 1580: 1575: 1560: 1501: 1454: 1276: 1206: 468: 440: 436: 384: 376: 369: 339: 299: 295: 169: 2455: 2445: 2248: 2050: 1915: 1900: 1745: 1610: 1570: 1476: 1469: 1464: 358: 335: 226: 222: 19:"White hair" redirects here. For the Native American leader, see 259:
In some cases, grey hair may be caused by thyroid deficiencies,
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The natural process of hair turning grey or white with age
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Indian Journal of Dermatology, Venereology and Leprology
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Greying of hair may be triggered by the accumulation of
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James, William; Berger, Timothy; Elston, Dirk (2005).
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Greying is a gradual process; according to a study by
1145:"Interactive Dig Hierakonpolis - Archaeological Hair" 718:"First gray hair gene found, plucked out of research" 236:
appear to be responsible for the process of greying.
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Andrews' Diseases of the Skin: Clinical Dermatology
580: 791: 244:were the first two discovered, then in 2016, the 2638: 1088:Cline DJ (April 1988). "Changes in hair color". 995:"No evidence of cure to prevent hair going grey" 256:controlled about 70% of cases of hair greying. 695:"Research yields clues to why hair turns gray" 1382: 1222: 1121: 1119: 890: 633: 411:than those with both grey eyebrows and hair. 816: 513: 326:, as well as high-level politicians such as 72:The same man at age 56, with fully grey hair 1038: 978:: CS1 maint: numeric names: authors list ( 870:"Fact or Fiction?: Stress Causes Grey Hair" 1389: 1375: 1229: 1215: 1116: 151:. The word "canities" is derived from the 63: 58:A 41-year-old man with partially grey hair 49: 44:Greying, graying, canities, achromotrichia 1186: 1064: 739:deficiency: report of a childhood case". 661: 651: 572: 531: 1087: 956:"Hair Lightening from the Sun - 23andMe" 294:and abnormally low levels of the enzyme 1014:Acta Dermatovenerol Alp Panonica Adriat 785: 578: 2639: 992: 867: 715: 446: 1370: 1210: 770:. Yahoo! Lifestyle UK. Archived from 579:Copping, Jasper (30 September 2012). 452:dry oxidizing conditions (such as in 414: 364: 221:phase and is "turned off" during the 1236: 847:"The Effects of Stress on Your Hair" 765: 636:"Oxidative Stress in Ageing of Hair" 110:Accepting the condition, medications 953: 23:. For the fictional character, see 13: 1811:Ivy League, Harvard, Princeton cut 1127:"Cancer drug restores hair colour" 844: 404:can also cause premature greying. 252:countries. However, it found that 14: 2668: 2579:Beard and haircut laws by country 1171:"Imatinib Mesylate and Gray Hair" 1147:. Archaeology.org. Archived from 607: 82:Loss of pigmentation in the hair. 909:Popular Science, January 1, 2020 2574:Andre Walker Hair Typing System 1796:Historical Christian hairstyles 1175:New England Journal of Medicine 1162: 1137: 1081: 1032: 1005: 986: 947: 912: 903: 884: 861: 838: 810: 759: 716:Storrs, Carina (1 March 2016). 589:from the original on 2022-01-12 283:development, which may cause a 1396: 728: 709: 687: 678: 634:Ralph M Trüeb (Jan–Jun 2009). 627: 601: 548: 507: 138: 1: 1102:10.1016/S0733-8635(18)30675-2 891:Robert Preidt (17 Apr 2013). 766:Weir, Sarah B. (2012-10-02). 514:Pandhi, D; Khanna, D (2013). 500: 459: 1039:Mosley JG, Gibbs AC (1996). 351: 7: 1188:10.1056/NEJM200208083470614 817:Nsikan Akpan (3 May 2013). 796:(10th ed.). Saunders. 516:"Premature graying of hair" 483: 162: 10: 2673: 999:Filey and Hunmanby Mercury 768:"Why does hair turn grey?" 159:for "gray hair, old age". 18: 2566: 2535: 2484: 2378: 2306: 2199: 2192: 2089: 1514: 1442: 1411: 1404: 1333: 1295: 1244: 1057:10.1136/bmj.313.7072.1616 490:Premature greying of hair 305: 225:phase, and absent during 185: 106: 98: 86: 76: 71: 62: 57: 48: 40: 35: 2657:External signs of ageing 1341:Disappearing blonde gene 921:Collegium Antropologicum 556: 533:10.4103/0378-6323.116733 2652:Biological anthropology 1356:Melanocortin 1 receptor 653:10.4103/0974-7753.51923 421:British Medical Journal 168:almost entirely due to 1596:Brush, butch, burr cut 310:Anecdotes report that 93:Psychological distress 993:Bazian (7 May 2013). 872:. Scientific American 254:environmental factors 2421:Hairstyling products 1996:Short back and sides 1346:Fischer–Saller scale 927:(Suppl 2): 163–165. 322:and prisoner of war 261:Waardenburg syndrome 2599:Eponymous hairstyle 2485:Haircare techniques 2476:Hair texture powder 2334:Frictional alopecia 477:mechanism of action 447:Changes after death 381:auto-immune disease 2536:Health and medical 1522:list of hairstyles 868:Ballantyne, Coco. 697:. Associated Press 415:Artificial factors 365:Medical conditions 277:autosomal dominant 2634: 2633: 2507:Curly Girl Method 2379:Haircare products 2374: 2373: 2341:Pattern hair loss 1621:Butterfly haircut 1510: 1509: 1364: 1363: 1325:Hydrogen peroxide 803:978-0-7216-2921-6 585:. The Telegraph. 423:study found that 402:pernicious anemia 292:hydrogen peroxide 114: 113: 30:Medical condition 2664: 2647:Human hair color 2361:Trichotillomania 2197: 2196: 2193:Hair subtraction 2179:Designer stubble 2021:Standard haircut 1941:Professional cut 1671:Croydon facelift 1591:Broccoli haircut 1409: 1408: 1391: 1384: 1377: 1368: 1367: 1238:Human hair color 1231: 1224: 1217: 1208: 1207: 1201: 1200: 1190: 1166: 1160: 1159: 1157: 1156: 1141: 1135: 1134: 1123: 1114: 1113: 1085: 1079: 1078: 1068: 1036: 1030: 1029: 1009: 1003: 1002: 990: 984: 983: 977: 969: 967: 966: 951: 945: 944: 916: 910: 907: 901: 900: 888: 882: 881: 879: 877: 865: 859: 858: 856: 854: 845:Saling, Joseph. 842: 836: 835: 833: 831: 814: 808: 807: 789: 783: 782: 780: 779: 763: 757: 756: 741:J Med Assoc Thai 732: 726: 725: 713: 707: 706: 704: 702: 691: 685: 682: 676: 675: 665: 655: 640:Int J Trichology 631: 625: 624: 622: 620: 605: 599: 598: 596: 594: 584: 576: 570: 569: 567: 565: 552: 546: 545: 535: 511: 466:anti-cancer drug 409:type II diabetes 287:white forelock. 119:, also known as 67: 53: 33: 32: 2672: 2671: 2667: 2666: 2665: 2663: 2662: 2661: 2637: 2636: 2635: 2630: 2562: 2543:Greying of hair 2531: 2522:Shampoo and set 2480: 2370: 2302: 2188: 2093: 2085: 2001:Short brush cut 1966:Regular haircut 1616:Businessman cut 1519: 1506: 1438: 1400: 1395: 1365: 1360: 1351:Greying of hair 1329: 1291: 1240: 1235: 1205: 1204: 1167: 1163: 1154: 1152: 1143: 1142: 1138: 1125: 1124: 1117: 1086: 1082: 1037: 1033: 1010: 1006: 991: 987: 971: 970: 964: 962: 960:www.23andme.com 952: 948: 917: 913: 908: 904: 889: 885: 875: 873: 866: 862: 852: 850: 843: 839: 829: 827: 815: 811: 804: 790: 786: 777: 775: 764: 760: 738: 733: 729: 714: 710: 700: 698: 693: 692: 688: 683: 679: 632: 628: 618: 616: 606: 602: 592: 590: 577: 573: 563: 561: 558: 554: 553: 549: 512: 508: 503: 495:Canities subita 486: 462: 449: 425:tobacco smoking 417: 398:Werner syndrome 367: 354: 308: 268: 198:at the base of 188: 165: 141: 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1297:Hair coloring 1294: 1288: 1285: 1283: 1280: 1278: 1275: 1273: 1270: 1268: 1265: 1263: 1260: 1258: 1255: 1253: 1250: 1249: 1247: 1243: 1239: 1232: 1227: 1225: 1220: 1218: 1213: 1212: 1209: 1198: 1194: 1189: 1184: 1180: 1176: 1172: 1165: 1151:on 2011-12-10 1150: 1146: 1140: 1133:. 2002-08-08. 1132: 1128: 1122: 1120: 1111: 1107: 1103: 1099: 1095: 1091: 1090:Dermatol Clin 1084: 1076: 1072: 1067: 1062: 1058: 1054: 1050: 1046: 1042: 1035: 1027: 1023: 1020:(4): 157–60. 1019: 1015: 1008: 1000: 996: 989: 981: 975: 961: 957: 950: 942: 938: 934: 930: 926: 922: 915: 906: 898: 894: 887: 871: 864: 848: 841: 826: 825: 824:Medical Daily 820: 813: 805: 799: 795: 788: 774:on 2012-10-07 773: 769: 762: 754: 750: 747:(6): 348–54. 746: 742: 731: 723: 719: 712: 696: 690: 681: 673: 669: 664: 659: 654: 649: 645: 641: 637: 630: 615: 614:gaizupath.com 611: 608:Giana, Bosa. 604: 588: 583: 575: 560:(in Japanese) 559: 551: 543: 539: 534: 529: 526:(5): 641–53. 525: 521: 517: 510: 506: 496: 493: 491: 488: 487: 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Web MD 701:5 August 672:20805969 587:Archived 542:23974581 484:See also 469:imatinib 441:imatinib 437:leukemia 385:catalase 377:Vitiligo 370:Albinism 340:cortisol 300:vitiligo 296:catalase 232:Several 202:produce 170:genetics 163:Overview 157:cānitiēs 145:canities 125:canities 78:Symptoms 2591: ( 2567:Related 2456:Shampoo 2451:Rollers 2446:Relaxer 2396:Clipper 2324:totalis 2249:Shaving 2207:Removal 2051:Tonsure 1991:Shimada 1956:Rattail 1916:Pigtail 1901:Pageboy 1876:Mod cut 1861:Lob cut 1746:Flattop 1636:Chignon 1611:Bunches 1603: ( 1571:Bob cut 1566:Blowout 1556:Beehive 1477:Eyelash 1470:unibrow 1465:Eyebrow 1412:by type 1110:3288386 1075:8991008 1066:2359122 753:1744541 663:2929555 454:burials 419:A 1996 359:23andMe 336:hormone 316:Titanic 227:telogen 223:catagen 180:L'Oreal 121:greying 2589:Barber 2441:Pomade 2436:Mousse 2319:areata 2291:safety 2212:waxing 2172:walrus 2162:pencil 2115:Goatee 1986:Shikha 1886:Mullet 1881:Mohawk 1821:Jewfro 1766:Fringe 1605:odango 1434:Vellus 1419:Lanugo 1282:Titian 1252:Auburn 1195:  1108:  1073:  1063:  1024:  939:  931:  800:  751:  670:  660:  564:3 July 540:  345:Nature 312:stress 306:Stress 219:anagen 186:Causes 99:Causes 2604:Frizz 2461:Spray 2411:Dryer 2386:Brush 2281:Razor 2269:brush 2264:cream 2237:laser 2105:Beard 2081:Wings 2071:Waves 1951:Quiff 1946:Queue 1911:Payot 1896:1980s 1891:1950s 1586:Braid 1551:Bangs 1515:Head 1497:Pubic 1487:Chest 1334:Other 1287:White 1267:Brown 1262:Blond 1257:Black 897:WebMD 263:or a 242:Bcl-w 234:genes 155:word 153:Latin 127:, or 102:Aging 2619:list 2593:pole 2517:Perm 2431:Iron 2401:Comb 2391:Clay 2274:soap 2254:head 2096:list 2056:Updo 1976:Shag 1906:Part 1651:Conk 1546:Bald 1531:Afro 1460:Nose 1450:Body 1424:Body 1305:Blue 1272:Gray 1193:PMID 1106:PMID 1071:PMID 1022:PMID 980:link 937:PMID 929:ISSN 878:2013 855:2013 832:2016 798:ISBN 749:PMID 703:2011 668:PMID 621:2017 595:2017 566:2012 538:PMID 464:The 400:and 330:and 246:IRF4 240:and 238:Bcl2 2471:Wax 2416:Gel 2259:leg 2242:IPL 1601:Bun 1502:Leg 1455:Ear 1277:Red 1183:doi 1179:347 1098:doi 1061:PMC 1053:doi 1049:313 1045:BMJ 722:CNN 658:PMC 648:doi 528:doi 147:or 133:age 2643:: 1191:. 1177:. 1173:. 1129:. 1118:^ 1104:. 1092:. 1069:. 1059:. 1047:. 1043:. 1018:14 1016:. 997:. 976:}} 972:{{ 958:. 935:. 925:32 923:. 895:. 821:. 745:74 743:. 737:12 720:. 666:. 656:. 642:. 638:. 612:. 536:. 524:79 522:. 518:. 267:12 135:. 123:, 2595:) 2098:) 2094:( 1607:) 1524:) 1520:( 1390:e 1383:t 1376:v 1230:e 1223:t 1216:v 1199:. 1185:: 1158:. 1112:. 1100:: 1094:6 1077:. 1055:: 1028:. 1001:. 982:) 968:. 943:. 899:. 880:. 857:. 834:. 806:. 781:. 755:. 724:. 705:. 674:. 650:: 644:1 623:. 597:. 568:. 544:. 530:: 27:.

Index

White Hair
Whitehair


Symptoms
Complications
Psychological distress
age
Latin
genetics
L'Oreal
stem cells
hair follicles
melanocytes
stem cells
melanogenesis
anagen
catagen
telogen
genes
IRF4
Latin American
environmental factors
Waardenburg syndrome
vitamin B12 deficiency
Piebaldism
autosomal dominant
melanocyte
congenital
hydrogen peroxide

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