{"id":58166,"date":"2015-02-26T18:32:33","date_gmt":"2015-02-26T18:32:33","guid":{"rendered":"https:\/\/www.chronobiology.com\/late-night-snacking-bad-for-your-brain\/"},"modified":"2024-07-18T14:41:07","modified_gmt":"2024-07-18T21:41:07","slug":"le-grignotage-en-fin-de-soir-e-mauvais-pour-le-cerveau","status":"publish","type":"post","link":"https:\/\/dev.chronobiology.com\/fr\/le-grignotage-en-fin-de-soir-e-mauvais-pour-le-cerveau\/","title":{"rendered":"Le grignotage en fin de soir\u00e9e : Mauvais pour le cerveau ?"},"content":{"rendered":"

Les chercheurs ont d\u00e9couvert que les grignotages nocturnes peuvent \u00eatre n\u00e9fastes pour le tour de taille et m\u00eame contribuer au diab\u00e8te de type 2. Cependant, les recherches les plus r\u00e9centes montrent que votre bol de glace ou de chips de fin de soir\u00e9e peut \u00e9galement avoir des effets n\u00e9gatifs sur votre cerveau. Une \u00e9tude de l’UCLA a montr\u00e9 que l’apprentissage et la m\u00e9moire sont diminu\u00e9s lorsque les sujets de recherche mangent tard le soir.<\/p>\n

\n

La chronobiologie de l’alimentation<\/h2>\n

\"Late<\/a>La plupart des gens pensent qu’une alimentation saine consiste davantage \u00e0 faire de bons choix alimentaires qu’\u00e0 manger \u00e0 des heures r\u00e9guli\u00e8res. Cependant, nos processus m\u00e9taboliques sont influenc\u00e9s par les rythmes circadiens<\/a>, ou horloges internes de 24 heures. Plus d’une centaine de ces horloges contr\u00f4lent des processus biologiques allant de la division cellulaire \u00e0 l’immunit\u00e9 en passant par la lib\u00e9ration d’hormones du sommeil.<\/p>\n

Lachronobiologie<\/a>, ou l’\u00e9tude de ces horloges internes, fait l’objet de nombreuses recherches modernes. De plus en plus, les scientifiques constatent qu’il est important d’effectuer certaines activit\u00e9s et m\u00eame de prendre certains m\u00e9dicaments \u00e0 des moments tr\u00e8s pr\u00e9cis de la journ\u00e9e. Le grignotage noct<\/a> urne a d\u00e9j\u00e0 \u00e9t\u00e9 identifi\u00e9 comme ayant des effets n\u00e9gatifs sur le m\u00e9tabolisme et contribuant aux maladies li\u00e9es au syndrome m\u00e9tabolique.<\/p>\n

Manger tard le soir et apprendre<\/h2>\n

On sait que les rythmes circadiens jouent un r\u00f4le important dans l’apprentissage et la m\u00e9moire. Quiconque a essay\u00e9 d’effectuer des t\u00e2ches mentales complexes alors qu’il souffrait du d\u00e9calage horaire ou d’un manque de sommeil peut le confirmer. Cependant, le grignotage nocturne peut jouer un r\u00f4le dans cet effet.<\/p>\n

\"Late<\/a>Dans l’\u00e9tude <\/a>men\u00e9e \u00e0 l’UCLA, un groupe t\u00e9moin de souris a \u00e9t\u00e9 autoris\u00e9 \u00e0 manger quand il le souhaitait. Le groupe exp\u00e9rimental, quant \u00e0 lui, ne pouvait manger qu’\u00e0 l’heure o\u00f9 les souris dorment normalement. Les deux groupes ont mang\u00e9 et dormi la m\u00eame dur\u00e9e totale chaque jour, mais le groupe exp\u00e9rimental a mang\u00e9 et dormi \u00e0 des heures diff\u00e9rentes et moins naturelles.<\/p>\n

Apr\u00e8s plusieurs semaines, les souris ont \u00e9t\u00e9 soumises \u00e0 des tests d’apprentissage et de m\u00e9moire. Les souris du groupe exp\u00e9rimental qui avaient mang\u00e9 alors qu’elles auraient d\u00fb dormir ont non seulement obtenu des r\u00e9sultats inf\u00e9rieurs \u00e0 ceux de leurs cong\u00e9n\u00e8res, mais ont \u00e9galement montr\u00e9 des changements dans la structure de leur hippocampe. L’hippocampe est la zone du cerveau consid\u00e9r\u00e9e comme responsable de l’apprentissage et de la m\u00e9moire.<\/p>\n

Comment le grignotage peut-il affecter le cerveau ?<\/h2>\n

Des recherches suppl\u00e9mentaires seront n\u00e9cessaires pour identifier la cause exacte des modifications de l’hippocampe chez ces souris. Toutefois, les chercheurs pensent pouvoir identifier la cause. Les personnes qui mangent tard le soir sont plus susceptibles de veiller tard et de ne pas dormir \u00e0 une heure naturelle. Manger \u00e0 une heure tardive perturbe encore plus leur cycle veille-sommeil. En outre, manger tard le soir r\u00e9duit la plasticit\u00e9 synaptique, qui est le processus physiologique permettant au cerveau de stocker de nouvelles informations.<\/p>\n

En outre, le corps n’est pas aussi efficace pour m\u00e9taboliser les aliments aux heures o\u00f9 il est cens\u00e9 dormir. Dans les cultures humaines traditionnelles, le repas le plus copieux \u00e9tait pris \u00e0 midi. Les souris qui mangeaient pendant les heures normales de sommeil pr\u00e9sentaient \u00e9galement des l\u00e9sions au niveau du foie et des glandes surr\u00e9nales.<\/p>\n

Les d\u00e9fis du mode de vie moderne<\/h2>\n

\"Late<\/a>L’horloge biologique de l’homme moderne est plus que jamais mise \u00e0 l’\u00e9preuve. De nombreuses personnes ont des journ\u00e9es longues et charg\u00e9es qui font que les soir\u00e9es tardives sont le seul moment de loisir et de grignotage. En outre, 15 millions d’Am\u00e9ricains travaillent actuellement en horaires d\u00e9cal\u00e9s, c’est-\u00e0-dire que leurs journ\u00e9es sont r\u00e9guli\u00e8rement d\u00e9cal\u00e9es par rapport \u00e0 leurs cycles naturels de lumi\u00e8re et d’obscurit\u00e9.<\/p>\n

Les travailleurs post\u00e9s et les autres personnes dont les horaires de travail ne sont pas naturels peuvent modifier leur fuseau horaire interne en r\u00e9glant la lumi\u00e8re et l’obscurit\u00e9 de mani\u00e8re \u00e0 ce qu’elles co\u00efncident avec leur rythme quotidien d’\u00e9veil et de sommeil. Cependant, nombreux sont ceux qui essaient de rester \u00e9veill\u00e9s \u00e0 des heures normales pendant leurs jours de cong\u00e9. En cons\u00e9quence, le travail post\u00e9<\/a> est li\u00e9 \u00e0 une s\u00e9rie de maladies allant de la d\u00e9pression au cancer. De nombreux travailleurs post\u00e9s font \u00e9galement \u00e9tat d’une pens\u00e9e floue et d’une mauvaise m\u00e9moire, ce qui pourrait \u00eatre d\u00fb aux modifications de l’hippocampe observ\u00e9es chez les souris exp\u00e9rimentales de l’UCLA.<\/p>\n

Un nombre croissant d’\u00e9tudes en chronobiologie r\u00e9v\u00e8lent que le rythme circadien contr\u00f4le plus de processus physiologiques que nous ne pouvions l’imaginer auparavant. Cette recherche peut \u00eatre utilis\u00e9e pour mener une vie plus longue, plus saine et plus heureuse. Le grignotage nocturne peut causer suffisamment de probl\u00e8mes de sant\u00e9 pour que de nombreux scientifiques et m\u00e9decins recommandent de l’\u00e9viter compl\u00e8tement.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Les chercheurs ont d\u00e9couvert que les grignotages nocturnes peuvent \u00eatre n\u00e9fastes pour le tour de taille et m\u00eame contribuer au diab\u00e8te de type 2. Cependant, les recherches les plus r\u00e9centes montrent que votre bol de glace ou de chips de fin de soir\u00e9e peut \u00e9galement avoir des effets n\u00e9gatifs sur votre cerveau. Une \u00e9tude de […]<\/p>\n","protected":false},"author":15,"featured_media":23168,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[244,253,255],"tags":[],"class_list":{"0":"post-58166","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-chronoregime","8":"category-metabolisme","9":"category-sommeil","10":"entry"},"acf":[],"yoast_head":"\nLe grignotage en fin de soir\u00e9e : Mauvais pour le cerveau ? – Chronobiology.com<\/title>\n<meta name=\"description\" content=\"Researchers have found that late night snacking can be bad for your waistline, even contributing to type 2 diabetes. 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A study from UCLA found that learning and memory are both decreased when research subjects eat late at night.","breadcrumb":{"@id":"https:\/\/dev.chronobiology.com\/fr\/le-grignotage-en-fin-de-soir-e-mauvais-pour-le-cerveau\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dev.chronobiology.com\/fr\/le-grignotage-en-fin-de-soir-e-mauvais-pour-le-cerveau\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/dev.chronobiology.com\/fr\/le-grignotage-en-fin-de-soir-e-mauvais-pour-le-cerveau\/#primaryimage","url":"https:\/\/dev.chronobiology.com\/wp-content\/uploads\/2015\/02\/late-night-snacking-bad-for-your-brain-5.jpg","contentUrl":"https:\/\/dev.chronobiology.com\/wp-content\/uploads\/2015\/02\/late-night-snacking-bad-for-your-brain-5.jpg","width":1800,"height":679},{"@type":"BreadcrumbList","@id":"https:\/\/dev.chronobiology.com\/fr\/le-grignotage-en-fin-de-soir-e-mauvais-pour-le-cerveau\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/dev.chronobiology.com\/fr\/"},{"@type":"ListItem","position":2,"name":"Le grignotage en fin de soir\u00e9e : Mauvais pour le cerveau ?"}]},{"@type":"WebSite","@id":"https:\/\/dev.chronobiology.com\/fr\/#website","url":"https:\/\/dev.chronobiology.com\/fr\/","name":"Chronobiology.com","description":"","publisher":{"@id":"https:\/\/dev.chronobiology.com\/fr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dev.chronobiology.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/dev.chronobiology.com\/fr\/#organization","name":"Chronobiology","url":"https:\/\/dev.chronobiology.com\/fr\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/dev.chronobiology.com\/fr\/#\/schema\/logo\/image\/","url":"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2019\/01\/chronobiology_logo_en_r.png","contentUrl":"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2019\/01\/chronobiology_logo_en_r.png","width":375,"height":90,"caption":"Chronobiology"},"image":{"@id":"https:\/\/dev.chronobiology.com\/fr\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/chronobiology","https:\/\/x.com\/chronobionews","https:\/\/www.instagram.com\/chronobiology\/","https:\/\/www.pinterest.com\/chronobiology\/"]},{"@type":"Person","@id":"https:\/\/dev.chronobiology.com\/fr\/#\/schema\/person\/bbdffa2f15784a87635cc2a178677bf9","name":"Edwin Urbina","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/dev.chronobiology.com\/fr\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/9f2b187e688142c648b715334f89c7c0?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9f2b187e688142c648b715334f89c7c0?s=96&d=mm&r=g","caption":"Edwin Urbina"}}]}},"_links":{"self":[{"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/posts\/58166"}],"collection":[{"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/comments?post=58166"}],"version-history":[{"count":1,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/posts\/58166\/revisions"}],"predecessor-version":[{"id":58167,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/posts\/58166\/revisions\/58167"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/media\/23168"}],"wp:attachment":[{"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/media?parent=58166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/categories?post=58166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev.chronobiology.com\/fr\/wp-json\/wp\/v2\/tags?post=58166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}