{"id":2157,"date":"2020-05-01T15:10:54","date_gmt":"2020-05-01T15:10:54","guid":{"rendered":"https:\/\/seniorfitness.blog\/?p=2157"},"modified":"2020-04-26T15:32:16","modified_gmt":"2020-04-26T15:32:16","slug":"videnskaben-slaar-fast-at-stress-kan-give-graa-haar","status":"publish","type":"post","link":"https:\/\/seniorfitness.blog\/?p=2157","title":{"rendered":"Videnskaben sl\u00e5r fast, at stress kan give gr\u00e5 h\u00e5r"},"content":{"rendered":"<p>Da jeg forleden endelig fik tid til at bladre gennem april-nummeret af <strong>Samvirke<\/strong> faldt jeg over en kortfattet notits under sektionen <em>Vores sundhed<\/em> \u2013 en kort opsummering af en artikel fra <strong>The Guardian<\/strong>.<\/p>\n<p>Artiklen, <a href=\"https:\/\/www.theguardian.com\/science\/2020\/jan\/22\/stress-speeds-up-hair-greying-process-science-confirms\">Stress speeds up hair greying process, science confirms<\/a>, sl\u00e5r fast, at der rent faktisk er noget om at stress kan g\u00f8re \u00e9n gr\u00e5h\u00e5ret.<\/p>\n<p>Historier om at mennesker er blevet gr\u00e5h\u00e5ret natten over pga. chok eller sorg er dog stadig mildt overdrevne, men nye forskningsresultater har dog p\u00e5vist at stress kan fremme processen i udvikling af gr\u00e5 h\u00e5r &#8211; med en ledsagende forklaring p\u00e5 hvordan det kan ske. Fors\u00f8gsresultaterne er udgivet i det yderst anerkendte videnskabelige tidsskrift <strong><a href=\"https:\/\/www.nature.com\/articles\/s41586-020-1935-3.epdf?sharing_token=BmxD1vfxuyJvOc9spfqc79RgN0jAjWel9jnR3ZoTv0NyETasyvXeLww27-3puQJkStNkIa8kZQdjCWuyQuF5x7u6fGJn-vu_mQEgapI2uG7LOvBMsfRL4GPhpYQ3tNIUxljedtYvWGOLxwit8ikRpVNY1Yj_iTRcytQZs67SwZF3kwas0dlguiQ60aQrQLTByEcw416W494lrKe4iZv5koKq1h1arulO5NeSc2xrFpd7F5Xi43JlliMymxFT-3vCQgTQHmIy7EmEg7T8Gbx1Zy63CVwOE146wYwIqzawtdJZ_K_9wsqNWR-2cKG7un7n&amp;tracking_referrer=www.theguardian.com\">Nature<\/a><\/strong>. Det skal dog lige noteres, at fors\u00f8gene er blevet udf\u00f8rt p\u00e5 mus, og at resultaterne er ekstrapoleret til til, hvad der kan ske hos mennesker pga. ensartetheden i de biologiske processer, som foreg\u00e5r i h\u00e5rs\u00e6kkene hos mus og mennesker.<\/p>\n<p>Forskerne fandt frem til at under stress aktiveres sympatiske nerver, der innerverer en stamcelle-niche for s\u00e5kaldte melanocytter omkring h\u00e5rs\u00e6kkene. Lige som melanocytterne er med til at pigmentere hudens epidermis, er det melanocytter, som tilf\u00f8rer h\u00e5rene pigment. N\u00e5r disse sympatiske nerveender er overaktive i forhold til produktion af neurotransmitter (noradrenalin) f\u00f8rer det til \u00f8get celledeling og modning af stamcellerne ved h\u00e5rfolliklen, s\u00e5 stamcellepopulationen efter et stykke tid depleteres, s\u00e5 der ikke l\u00e6ngere produceres pigment. Det svarer til, at de p\u00e5g\u00e6ldende stamceller \u00e6ldes hurtigere.<\/p>\n<p>Set i et st\u00f8rre perspektiv kan disse resultater v\u00e6re med til at underst\u00f8tte tesen om, at kronisk stress kan fremme aldringsprocesserne i vores kroppe.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Da jeg forleden endelig fik tid til at bladre gennem april-nummeret af Samvirke faldt jeg over en kortfattet notits under sektionen Vores sundhed \u2013 en <a class=\"mh-excerpt-more\" href=\"https:\/\/seniorfitness.blog\/?p=2157\" title=\"Videnskaben sl\u00e5r fast, at stress kan give gr\u00e5 h\u00e5r\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":2160,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[81],"tags":[97,367,368,366],"class_list":["post-2157","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-livsstil","tag-aldring","tag-graa-haar","tag-graahaaret","tag-stress"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/seniorfitness.blog\/wp-content\/uploads\/2020\/04\/stress-2379631_1280.jpg?fit=1280%2C817&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8lpEz-yN","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/posts\/2157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2157"}],"version-history":[{"count":4,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/posts\/2157\/revisions"}],"predecessor-version":[{"id":2162,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/posts\/2157\/revisions\/2162"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=\/wp\/v2\/media\/2160"}],"wp:attachment":[{"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seniorfitness.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}