{"id":58162,"date":"2015-02-20T18:34:38","date_gmt":"2015-02-20T18:34:38","guid":{"rendered":"https:\/\/www.chronobiology.com\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm\/"},"modified":"2024-07-18T14:41:02","modified_gmt":"2024-07-18T21:41:02","slug":"troubles-affectifs-saisonniers-la-lumi-re-du-soleil-et-votre-rythme-circadien","status":"publish","type":"post","link":"https:\/\/dev.chronobiology.com\/fr\/troubles-affectifs-saisonniers-la-lumi-re-du-soleil-et-votre-rythme-circadien\/","title":{"rendered":"Troubles affectifs saisonniers : La lumi\u00e8re du soleil et votre rythme circadien"},"content":{"rendered":"<p>Nos rythmes <a href=\"https:\/\/www.chronobiology.com\/about-chronobiology\/#CircadianRhythm\" target=\"_blank\" rel=\"noopener\">circadiens<\/a>, ou horloges internes, contr\u00f4lent de nombreux processus biologiques vitaux tels que le sommeil, les cycles cellulaires et m\u00eame la gu\u00e9rison. Toutefois, de nouvelles donn\u00e9es sugg\u00e8rent que les rythmes circadiens pourraient \u00e9galement jouer un r\u00f4le majeur dans les troubles affectifs saisonniers (TAS).<\/p>\n<div>\n<h2>Qu&rsquo;est-ce que la d\u00e9pression saisonni\u00e8re ?<\/h2>\n<p><a href=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-2.jpg\"><img decoding=\"async\" class=\"alignright size-medium wp-image-5647\" src=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-2-194x300.jpg\" alt=\"Seasonal Affective Disorder, Circadian Rhythm \" width=\"194\" height=\"300\" srcset=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-2-194x300.jpg 194w, https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-2-768x1190.jpg 768w, https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-2.jpg 661w\" sizes=\"(max-width: 194px) 100vw, 194px\" \/><\/a>Les sympt\u00f4mes du trouble affectif <a href=\"http:\/\/www.medicalnewstoday.com\/articles\/10306.php\" target=\"_blank\" rel=\"noopener\">saisonnier<\/a> sont similaires \u00e0 ceux de la d\u00e9pression. En outre, les personnes qui en souffrent peuvent ressentir une augmentation de l&rsquo;app\u00e9tit et une grande fatigue par rapport \u00e0 d&rsquo;autres types de d\u00e9pression. Toutefois, ces sympt\u00f4mes ne se manifestent que pendant les mois froids. Un dixi\u00e8me des adultes aux \u00c9tats-Unis et au Royaume-Uni souffrent de ce trouble, et l&rsquo;on pense que le taux est le m\u00eame dans d&rsquo;autres pays o\u00f9 la qualit\u00e9 de la lumi\u00e8re est moins bonne en automne et en hiver.<\/p>\n<p>Autrefois consid\u00e9r\u00e9e comme un mythe, la d\u00e9pression saisonni\u00e8re est aujourd&rsquo;hui consid\u00e9r\u00e9e comme un trouble d\u00e9pressif majeur r\u00e9el et d\u00e9bilitant, r\u00e9pertori\u00e9 dans le Manuel diagnostique et statistique des troubles mentaux. Elle a fait l&rsquo;objet d&rsquo;\u00e9tudes approfondies en raison de l&rsquo;int\u00e9r\u00eat scientifique et m\u00e9dical naissant pour la <a href=\"https:\/\/www.chronobiology.com\/\" target=\"_blank\" rel=\"noopener\">chronobiologie<\/a>, c&rsquo;est-\u00e0-dire l&rsquo;\u00e9tude de l&rsquo;influence de l&rsquo;horloge biologique sur le corps humain.<\/p>\n<h2>Causes de la d\u00e9pression saisonni\u00e8re<\/h2>\n<p>Le trouble affectif saisonnier a plusieurs causes. Tout d&rsquo;abord, il semble qu&rsquo;il y ait une cause g\u00e9n\u00e9tique, car les personnes sont plus \u00e0 risque lorsqu&rsquo;un membre de leur famille est atteint de ce trouble. Les ant\u00e9c\u00e9dents de d\u00e9pression augmentent \u00e9galement le risque de d\u00e9velopper un trouble affectif saisonnier. Cependant, de <a href=\"http:\/\/www.livescience.com\/11665-cope-seasonal-affective-disorder.html\" target=\"_blank\" rel=\"noopener\">nouvelles recherches <\/a>sugg\u00e8rent que la cause sous-jacente est une perturbation du rythme circadien naturel de l&rsquo;organisme. Notre horloge interne d\u00e9pend de la lumi\u00e8re pour nous indiquer quand dormir, quand manger et m\u00eame quand nos cellules doivent se diviser.<\/p>\n<p>Une diminution de la lumi\u00e8re du soleil signifie que ces rythmes cessent de fonctionner normalement. La <a href=\"https:\/\/www.chronobiology.com\/sleep-2\/melatonin\/\" target=\"_blank\" rel=\"noopener\">m\u00e9latonine<\/a>, l&rsquo;hormone qui nous dit de dormir, est particuli\u00e8rement affect\u00e9e. Les patients atteints de d\u00e9pression saisonni\u00e8re pr\u00e9sentent des taux \u00e9lev\u00e9s de m\u00e9latonine, m\u00eame pendant les heures de clart\u00e9 de l&rsquo;hiver. En outre, l&rsquo;absence de signaux lumineux vers l&rsquo;hypothalamus entra\u00eene un faible taux de s\u00e9rotonine, responsable d&rsquo;autres types de d\u00e9pression majeure.<\/p>\n<p>Les recherches men\u00e9es sur les personnes souffrant de troubles affectifs saisonniers ont montr\u00e9 qu&rsquo;elles pr\u00e9sentaient souvent des perturbations non diagnostiqu\u00e9es de leurs rythmes circadiens. Ces perturbations mineures peuvent les rendre vuln\u00e9rables \u00e0 la d\u00e9pression saisonni\u00e8re.<\/p>\n<h2>Traitement de la d\u00e9pression saisonni\u00e8re<\/h2>\n<p>Le traitement des troubles affectifs saisonniers est similaire \u00e0 celui des autres formes de d\u00e9pression : m\u00e9dicaments antid\u00e9presseurs et psychoth\u00e9rapie. Une <a href=\"http:\/\/www.dovepress.com\/an-insight-into-light-as-a-chronobiological-therapy-in-affective-disor-peer-reviewed-article-CPT\" target=\"_blank\" rel=\"noopener\">plus grande exposition \u00e0 la lumi\u00e8re<\/a> s&rsquo;est \u00e9galement av\u00e9r\u00e9e utile. L&rsquo;American Psychiatric Association recommande aux personnes \u00e0 risque ou souffrant de d\u00e9pression saisonni\u00e8re de faire de l&rsquo;exercice en plein air lorsqu&rsquo;il y a de la lumi\u00e8re et d&rsquo;utiliser des caissons lumineux sous la supervision d&rsquo;un m\u00e9decin. Les caissons lumineux remplacent la lumi\u00e8re du soleil perdue \u00e0 cause de l&rsquo;hiver et aident le cerveau \u00e0 r\u00e9tablir l&rsquo;\u00e9quilibre neurochimique.<\/p>\n<h2>Comment la lumi\u00e8re peut-elle influer sur l&rsquo;humeur ?<\/h2>\n<p><a href=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-3.jpg\"><img decoding=\"async\" class=\"alignright size-medium wp-image-5648\" src=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-3-300x200.jpg\" alt=\"Seasonal Affective Disorder, Circadian Rhythm \" width=\"300\" height=\"200\" srcset=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-3-300x200.jpg 300w, https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-3-768x512.jpg 768w, https:\/\/www.chronobiology.com\/wp-content\/uploads\/2015\/02\/seasonal-affective-disorder-sunlight-and-your-circadian-rhythm-3.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>Un grand nombre de nos rythmes circadiens d\u00e9pendent de la lumi\u00e8re du soleil. Les horloges internes qui d\u00e9pendent de la lumi\u00e8re du soleil sont appel\u00e9es rythmes diurnes. Nos r\u00e9tines sont dot\u00e9es de photor\u00e9cepteurs qui utilisent la lumi\u00e8re pour nous donner la vue. Cependant, ces photor\u00e9cepteurs surveillent \u00e9galement les niveaux de lumi\u00e8re et transmettent des messages sur ces niveaux au cerveau, en particulier au noyau suprachiasmatique de l&rsquo;hypothalamus, o\u00f9 sont contr\u00f4l\u00e9s bon nombre de nos rythmes circadiens.<\/p>\n<p>Les rythmes diurnes jouant un r\u00f4le tr\u00e8s important dans l&rsquo;humeur et le sommeil, toute modification de la qualit\u00e9 de la lumi\u00e8re peut avoir une incidence consid\u00e9rable sur ces derniers. Les niveaux de m\u00e9latonine augmentent, ce qui rend les gens plus endormis, tandis que les niveaux de s\u00e9rotonine chutent et laissent les gens sans joie de vivre. Il est facile de comprendre comment ces changements biochimiques peuvent conduire \u00e0 la d\u00e9pression chez les personnes ayant une pr\u00e9disposition g\u00e9n\u00e9tique. Il a \u00e9t\u00e9 d\u00e9montr\u00e9 que m\u00eame une demi-heure de phototh\u00e9rapie par jour r\u00e9duisait les sympt\u00f4mes des troubles affectifs saisonniers.<\/p>\n<p>Le trouble affectif saisonnier peut \u00eatre un probl\u00e8me de sant\u00e9 d\u00e9bilitant. Cependant, il s&rsquo;agit \u00e9galement d&rsquo;un domaine d&rsquo;int\u00e9r\u00eat pour les chercheurs. Nous commen\u00e7ons \u00e0 peine \u00e0 comprendre le r\u00f4le majeur de notre rythme circadien sur les fonctions de notre corps et sur notre qualit\u00e9 de vie.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Nos rythmes circadiens, ou horloges internes, contr\u00f4lent de nombreux processus biologiques vitaux tels que le sommeil, les cycles cellulaires et m\u00eame la gu\u00e9rison. Toutefois, de nouvelles donn\u00e9es sugg\u00e8rent que les rythmes circadiens pourraient \u00e9galement jouer un r\u00f4le majeur dans les troubles affectifs saisonniers (TAS). Qu&rsquo;est-ce que la d\u00e9pression saisonni\u00e8re ? Les sympt\u00f4mes du trouble affectif [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":23144,"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":[246,256,259,255],"tags":[],"class_list":{"0":"post-58162","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-energie-fr","8":"category-melatonine","9":"category-sante-mentale","10":"category-sommeil","11":"entry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.4 (Yoast SEO v23.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Troubles affectifs saisonniers : La lumi\u00e8re du soleil et votre rythme circadien &#8211; Chronobiology.com<\/title>\n<meta name=\"description\" content=\"Our circadian rhythms, or internal clocks, control many vital biological processes such as sleep, cell cycles, and even healing. 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