{"id":18064,"date":"2023-08-29T00:00:25","date_gmt":"2023-08-29T00:00:25","guid":{"rendered":"https:\/\/www.africa-press.net\/madagascar\/politique\/comment-le-corps-reagit-au-soleil"},"modified":"2023-08-29T01:48:51","modified_gmt":"2023-08-29T01:48:51","slug":"comment-le-corps-reagit-au-soleil","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil","title":{"rendered":"Comment le corps r\u00e9agit au Soleil"},"content":{"rendered":"

Africa-Press – Madagascar. <\/strong><\/span>Le Soleil et le syste\u0300me immunitaire<\/b><\/p>\n

Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire… sans que l\u2019on comprenne re\u0301ellement comment. La vitamine D, synthe\u0301tise\u0301e sous l\u2019action des rayons ultraviolets, est soupc\u0327onne\u0301e depuis longtemps de jouer un ro\u0302le, bien que les preuves solides manquent. Mais en 2016, des biologistes ame\u0301ricains ont observe\u0301 un autre phe\u0301nome\u0300ne : sous l\u2019effet de la lumie\u0300re, des lymphocytes T (cruciaux pour le syste\u0300me immunitaire) cultive\u0301s in vitro sont mobiles, donc peut-e\u0302tre plus re\u0301actifs en cas d\u2019infection.<\/p>\n

Le Soleil et le microbiote<\/b><\/p>\n

Pour l\u2019heure, seules quelques rares e\u0301tudes explorent les liens entre exposition au Soleil et microbiote humain (l\u2019ensemble des micro-organismes vivant dans notre corps, souvent essentiels a\u0300 notre sante\u0301). En 2019, l\u2019une d\u2019elles montrait qu\u2019une exposition aux rayons UV modifiait significativement la composition du microbiote de la peau. La me\u0302me anne\u0301e, une autre e\u0301tude se penchait sur le microbiote intestinal : lorsque des femmes sont soumises a\u0300 un rayonnement UV, la diversite\u0301 bacte\u0301rienne de leur syste\u0300me digestif s\u2019en trouve enrichi.<\/p>\n

Le Soleil et le syste\u0300me cardiovasculaire<\/b><\/p>\n

C\u2019est presque une bataille range\u0301e entre dermatologues et oncologues d\u2019un co\u0302te\u0301, qui alertent sur les risques d\u2019une exposition trop forte au Soleil, et cardiologues de l\u2019autre, qui louent ses bienfaits pour le syste\u0300me cardiovasculaire. Plusieurs e\u0301tudes semblent en effet montrer une association entre ensoleillement et re\u0301duction des proble\u0300mes cardiaques (infarctus par exemple).<\/p>\n

De plus, les de\u0301ga\u0302ts cause\u0301s par ces derniers pourraient e\u0302tre atte\u0301nue\u0301s par l\u2019action de la vitamine D3, une forme de vitamine D synthe\u0301tise\u0301e gra\u0302ce au soleil. Enfin, s\u2019exposer aux UV entrai\u0302ne une diminution de la pression arte\u0301rielle. Conclusion : e\u0301vitez les longs bains de soleil, ne\u0301fastes pour votre peau… sans pour autant bannir toute exposition, bonne pour votre c\u0153ur.<\/p>\n

Le Soleil et l\u2019appe\u0301tit<\/b><\/p>\n

En juillet 2022, une e\u0301quipe israe\u0301lienne a de\u0301voile\u0301 un effet jusqu\u2019alors insoupc\u0327onne\u0301 du soleil. Les rayons UV provoqueraient chez l\u2019homme et la souris \u2013 et chez les ma\u0302les uniquement \u2013 une augmentation du taux de ghre\u0301line dans le corps. Or, cette hormone est re\u0301pute\u0301e stimuler l\u2019appe\u0301tit.<\/p>\n

L\u2019e\u0301quipe a e\u0301galement constate\u0301 que l\u2019exposition aux UV augmente la prise de nourriture \u2013 et de poids \u2013 chez la souris. Enfin, une enque\u0302te mene\u0301e sur 3.000 Israe\u0301liens semble montrer que les hommes mangent effectivement en plus grande quantite\u0301 durant les mois les plus ensoleille\u0301s de l\u2019anne\u0301e.<\/p>\n

Le Soleil et les capacite\u0301s cognitives<\/b><\/p>\n

Le Soleil influe sur le fonctionnement de notre cerveau. Il suffit pour s\u2019en convaincre de lister le nombre de troubles psychiques ou cognitifs affecte\u0301s par la lumie\u0300re (de\u0301pression, bipolarite\u0301, Alzheimer…). Et en dehors des pathologies ? Chez la souris, une exposition aux rayons UV augmente les capacite\u0301s d\u2019apprentissage et de me\u0301moire.<\/p>\n

Chez l\u2019e\u0302tre humain, une e\u0301tude mene\u0301e chez des patients de\u0301pressifs a montre\u0301 une corre\u0301lation entre le taux d\u2019ensoleillement et les troubles de la me\u0301moire. Attention toutefois : l\u2019exposition prolonge\u0301e a\u0300 un soleil de plomb alte\u0300re a\u0300 l\u2019inverse les performances cognitives !<\/p>\n

Pour plus d’informations et d’analyses sur la Madagascar<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Madagascar. Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire… sans que l\u2019on comprenne re\u0301ellement comment. La vitamine D, synthe\u0301tise\u0301e sous l\u2019action des rayons ultraviolets, est soupc\u0327onne\u0301e depuis longtemps de jouer un ro\u0302le, bien que les preuves solides manquent. Mais en 2016, des biologistes ame\u0301ricains ont […]<\/p>\n","protected":false},"author":82,"featured_media":18063,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,50,49],"class_list":["post-18064","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-madagascar","tag-madagascar"],"yoast_head":"\nComment le corps r\u00e9agit au Soleil - Madagascar<\/title>\n<meta name=\"description\" content=\"Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comment le corps r\u00e9agit au Soleil\" \/>\n<meta property=\"og:description\" content=\"Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\" \/>\n<meta property=\"og:site_name\" content=\"Madagascar\" \/>\n<meta property=\"article:published_time\" content=\"2023-08-29T00:00:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-08-29T01:48:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Comment le corps r\u00e9agit au Soleil\",\"datePublished\":\"2023-08-29T00:00:25+00:00\",\"dateModified\":\"2023-08-29T01:48:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\"},\"wordCount\":591,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Madagascar\",\"Madagascar\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\",\"url\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\",\"name\":\"Comment le corps r\u00e9agit au Soleil - Madagascar\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg\",\"datePublished\":\"2023-08-29T00:00:25+00:00\",\"dateModified\":\"2023-08-29T01:48:51+00:00\",\"author\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"description\":\"Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire ...\",\"breadcrumb\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage\",\"url\":\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg\",\"contentUrl\":\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg\",\"width\":1200,\"height\":900,\"caption\":\"Comment le corps r\u00e9agit au Soleil\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.africa-press.net\/madagascar\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Comment le corps r\u00e9agit au Soleil\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/#website\",\"url\":\"https:\/\/www.africa-press.net\/madagascar\/\",\"name\":\"Madagascar\",\"description\":\"Just another Africa News Agency Sites site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.africa-press.net\/madagascar\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\",\"name\":\"cfeditorfr\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Comment le corps r\u00e9agit au Soleil - Madagascar","description":"Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire ...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil","og_locale":"fr_FR","og_type":"article","og_title":"Comment le corps r\u00e9agit au Soleil","og_description":"Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire ...","og_url":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil","og_site_name":"Madagascar","article_published_time":"2023-08-29T00:00:25+00:00","article_modified_time":"2023-08-29T01:48:51+00:00","og_image":[{"width":1200,"height":900,"url":"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg","type":"image\/jpeg"}],"author":"cfeditorfr","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"cfeditorfr","Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#article","isPartOf":{"@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil"},"author":{"name":"cfeditorfr","@id":"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"headline":"Comment le corps r\u00e9agit au Soleil","datePublished":"2023-08-29T00:00:25+00:00","dateModified":"2023-08-29T01:48:51+00:00","mainEntityOfPage":{"@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil"},"wordCount":591,"commentCount":0,"image":{"@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg","keywords":["Africa Press","Africa Press-Madagascar","Madagascar"],"articleSection":["Divers","Toutes les actualit\u00e9s"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil","url":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil","name":"Comment le corps r\u00e9agit au Soleil - Madagascar","isPartOf":{"@id":"https:\/\/www.africa-press.net\/madagascar\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage"},"image":{"@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg","datePublished":"2023-08-29T00:00:25+00:00","dateModified":"2023-08-29T01:48:51+00:00","author":{"@id":"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"description":"Le Soleil et le syste\u0300me immunitaire Une exposition mode\u0301re\u0301e au Soleil semble renforcer le syste\u0300me immunitaire ...","breadcrumb":{"@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#primaryimage","url":"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg","contentUrl":"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/08\/sm_1693256802.184925.jpg","width":1200,"height":900,"caption":"Comment le corps r\u00e9agit au Soleil"},{"@type":"BreadcrumbList","@id":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/comment-le-corps-reagit-au-soleil#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.africa-press.net\/madagascar\/"},{"@type":"ListItem","position":2,"name":"Comment le corps r\u00e9agit au Soleil"}]},{"@type":"WebSite","@id":"https:\/\/www.africa-press.net\/madagascar\/#website","url":"https:\/\/www.africa-press.net\/madagascar\/","name":"Madagascar","description":"Just another Africa News Agency Sites site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.africa-press.net\/madagascar\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1","name":"cfeditorfr"}]}},"_links":{"self":[{"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/posts\/18064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/comments?post=18064"}],"version-history":[{"count":0,"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/posts\/18064\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/media\/18063"}],"wp:attachment":[{"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/media?parent=18064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/categories?post=18064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.africa-press.net\/madagascar\/wp-json\/wp\/v2\/tags?post=18064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}