{"id":8566,"date":"2023-02-06T21:13:17","date_gmt":"2023-02-06T21:13:17","guid":{"rendered":"https:\/\/cdhf.staging.not4prod.com\/?p=8566"},"modified":"2023-02-09T19:31:03","modified_gmt":"2023-02-09T19:31:03","slug":"lintolerance-au-lactose-faqs","status":"publish","type":"post","link":"https:\/\/cdhf.ca\/fr\/lintolerance-au-lactose-faqs\/","title":{"rendered":"L\u2019Intol\u00e9rance au lactose FAQs"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Les personnes souffrant d\u2019intol\u00e9rance au lactose ressentent des sympt\u00f4mes d\u00e9sagr\u00e9ables apr\u00e8s avoir mang\u00e9 ou bu du lait ou des produits laitiers. Mais pourquoi? Normalement, lorsqu\u2019une personne mange quelque chose contenant du lactose, une enzyme, produite dans l\u2019intestin gr\u00eale et appel\u00e9e la lactase, d\u00e9compose le lactose en des composants simples (soit des sucres simples, appel\u00e9s le glucose et le galactose). Ces sucres simples peuvent ensuite \u00eatre absorb\u00e9s dans la circulation sanguine et vous fournissent l\u2019\u00e9nergie dont vous avez besoin.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si vous \u00eates intol\u00e9rant.e au lactose, votre organisme ne produit pas suffisamment de lactase pour d\u00e9composer le lactose, et, par cons\u00e9quent, les mol\u00e9cules non dig\u00e9r\u00e9es de lactose se d\u00e9placent dans les parties inf\u00e9rieures de l\u2019intestin. \u00c0 cet endroit, le lactose non dig\u00e9r\u00e9 rencontre des bact\u00e9ries qui entament la digestion par le biais d\u2019un processus de fermentation. Le r\u00e9sultat de cette fermentation (hydrog\u00e8ne, dioxyde de carbone, gaz de m\u00e9thane et acides gras \u00e0 cha\u00eene courte) entra\u00eene plusieurs des sympt\u00f4mes r\u00e9v\u00e9lateurs de l\u2019intol\u00e9rance au lactose, comme les flatulences et la diarrh\u00e9e.&nbsp;<sup>(1)<\/sup><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2022\/10\/AdobeStock_482376783-1536x1051-1-1024x700.webp\" alt=\"man with lactose intolerance holding milk\" class=\"wp-image-3732 lazyload\"\/><noscript><img decoding=\"async\" width=\"1024\" height=\"700\" src=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2022\/10\/AdobeStock_482376783-1536x1051-1-1024x700.webp\" alt=\"man with lactose intolerance holding milk\" class=\"wp-image-3732 lazyload\"\/><\/noscript><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nous avons compil\u00e9 une liste de questions fr\u00e9quemment pos\u00e9es au sujet de l\u2019intol\u00e9rance au lactose pour vous aider \u00e0 comprendre ce trouble digestif!<\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>Quels sont les types d\u2019intol\u00e9rance au lactose?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une insuffisance \u00e0 la lactase est un spectre&nbsp;: elle peut \u00eatre primaire, secondaire ou cong\u00e9nitale et certaines personnes pr\u00e9sentent une insuffisance plus grave que d\u2019autres.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1.&nbsp;<strong>Insuffisance primaire \u00e0 la lactase<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est la cause d\u2019intol\u00e9rance au lactose la plus courante et la plus pr\u00e9valente chez les adultes. La plupart des personnes poss\u00e8dent \u00e0 la naissance et durant la petite enfance des quantit\u00e9s suffisantes de lactase, lorsque le lait maternel est la principale source de nutrition. Chez certaines personnes, la quantit\u00e9 de lactase diminue en vieillissant; chez d\u2019autres la production de lactase se poursuit. C\u2019est un trouble transmis g\u00e9n\u00e9tiquement o\u00f9 le parent transmet une mutation g\u00e9n\u00e9tique \u00e0 son enfant.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2.&nbsp;Insuffisance secondaire \u00e0 la lactase<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Des l\u00e9sions \u00e0 la paroi de l\u2019intestin gr\u00eale peuvent causer une insuffisance \u00e0 la lactase et une intol\u00e9rance au lactose, qui est habituellement associ\u00e9e \u00e0 d\u2019autres signes de dommages intestinaux, comme une diarrh\u00e9e persistante, des saignements intestinaux et une perte de poids. De plus, des infections intestinales, comme la salmonelle et des parasites, tels que les giardias, peuvent causer une intol\u00e9rance au lactose. Enfin, des troubles digestifs, comme la maladie c\u0153liaque et la maladie de Crohn peuvent inclure l\u2019intol\u00e9rance au lactose parmi leurs sympt\u00f4mes. Bien que la plupart des personnes vivant avec une intol\u00e9rance au lactose souffrent d\u2019une insuffisance primaire \u00e0 la lactase, la possibilit\u00e9 d\u2019une maladie intestinale sous-jacente devrait \u00eatre envisag\u00e9e, surtout si les sympt\u00f4mes s\u2019accompagnent d\u2019une perte de poids ou d\u2019une num\u00e9ration globulaire faible (an\u00e9mie).<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3.&nbsp;Insuffisance cong\u00e9nitale \u00e0 la lactase<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est une maladie h\u00e9r\u00e9ditaire tr\u00e8s rare qui se caract\u00e9rise d\u00e8s la naissance d\u2019une incapacit\u00e9 du corps \u00e0 produire de la lactase. Dans ce cas, les deux parents ont transmis le g\u00e8ne de l\u2019intol\u00e9rance au lactose \u00e0 leur enfant, emp\u00eachant l\u2019intestin gr\u00eale de produire de la lactase. Les b\u00e9b\u00e9s touch\u00e9s ne peuvent pas tol\u00e9rer les produits laitiers et doivent \u00eatre nourris \u00e0 l\u2019aide de pr\u00e9parations pour nourrissons ne contenant aucun produit laitier.<\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>L\u2019intol\u00e9rance au lactose est-elle transmise g\u00e9n\u00e9tiquement?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019insuffisance primaire \u00e0 la lactase et l\u2019insuffisance cong\u00e9nitale \u00e0 la lactase sont toutes les deux transmises g\u00e9n\u00e9tiquement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019insuffisance primaire \u00e0 la lactase est un trouble transmis g\u00e9n\u00e9tiquement impliquant la transmission d\u2019une mutation g\u00e9n\u00e9tique d\u2019un parent \u00e0 l\u2019enfant. On peut penser que l\u2019insuffisance primaire \u00e0 la lactase se d\u00e9veloppe, parce que les sympt\u00f4mes n\u2019apparaissent g\u00e9n\u00e9ralement pas avant l\u2019\u00e2ge adulte, mais elle est en fait h\u00e9r\u00e9ditaire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019insuffisance cong\u00e9nitale \u00e0 la lactase est aussi transmise g\u00e9n\u00e9tiquement. La mutation g\u00e9n\u00e9tique causant l\u2019insuffisance cong\u00e9nitale \u00e0 la lactase est transmise par l\u2019h\u00e9r\u00e9dit\u00e9 r\u00e9cessive autosomique. Ce qui signifie que les deux parents doivent poss\u00e9der une copie du g\u00e8ne modifi\u00e9 pour transmettre la maladie.&nbsp;<sup>(4)<\/sup><\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>L\u2019intol\u00e9rance au lactose peut-elle appara\u00eetre et dispara\u00eetre?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019intol\u00e9rance au lactose ne dispara\u00eetra jamais compl\u00e8tement chez les personnes qui y sont pr\u00e9dispos\u00e9es g\u00e9n\u00e9tiquement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela \u00e9tant dit, il est possible de g\u00e9rer les sympt\u00f4mes et plusieurs personnes constatent que leurs sympt\u00f4mes disparaissent en quelques jours apr\u00e8s avoir diminu\u00e9 la quantit\u00e9 de produits laitiers de leur r\u00e9gime alimentaire.&nbsp;<sup>(1)<\/sup><\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>L\u2019intol\u00e9rance au lactose est-elle une allergie?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019intol\u00e9rance au lactose n\u2019est PAS une allergie. Une allergie au lait est une r\u00e9action immunitaire aux prot\u00e9ines que contient le lait de vache et se caract\u00e9rise par des irritations cutan\u00e9es, des sympt\u00f4mes d\u2019inflammation de l\u2019\u0153sophage ou des intestins, ou parfois d\u2019une r\u00e9action anaphylactique potentiellement mortelle. Une allergie alimentaire se produit lorsque votre syst\u00e8me immunitaire r\u00e9agit de mani\u00e8re excessive \u00e0 une prot\u00e9ine alimentaire sp\u00e9cifique, causant une r\u00e9action allergique. Contrairement aux allergies alimentaires, les intol\u00e9rances alimentaires n\u2019impliquent pas le syst\u00e8me immunitaire, mais se produisent lorsqu\u2019une personne ne poss\u00e8de pas l\u2019enzyme de la lactase. Les allergies au lait sont g\u00e9n\u00e9ralement diagnostiqu\u00e9es durant la premi\u00e8re ann\u00e9e de vie, alors que l\u2019intol\u00e9rance au lactose l\u2019est davantage \u00e0 l\u2019\u00e2ge adulte.&nbsp;<sup>(2)<\/sup><\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>Peut-on devenir soudainement intol\u00e9rant.e au lactose?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce trouble se manifeste souvent t\u00f4t dans la vie, mais il n\u2019est pas rare qu\u2019il se d\u00e9veloppe plus tard et qu\u2019il semble sortir de nulle part. En vieillissant (\u00e0 partir de l\u2019\u00e2ge de 2 ans), le corps produit g\u00e9n\u00e9ralement de moins en moins de lactase. \u00c0 l\u2019\u00e2ge adulte, jusqu\u2019\u00e0 70&nbsp;% des personnes ne produisent plus assez de lactase pour dig\u00e9rer ad\u00e9quatement le lactose que contient le lait, engendrant des sympt\u00f4mes lorsqu\u2019elles en consomment. Cela est particuli\u00e8rement courant chez les personnes qui ne sont pas de descendance europ\u00e9enne.&nbsp;<sup>(3)<\/sup><\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>Est-il possible d\u2019\u00eatre atteint.e de&nbsp;maladie c\u0153liaque&nbsp;et d\u2019intol\u00e9rance au lactose?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est possible. 25&nbsp;% des patients ayant \u00e9t\u00e9 cliniquement identifi\u00e9s comme intol\u00e9rants au lactose sont aussi atteints de la maladie c\u0153liaque. Au Canada, cela repr\u00e9sente environ 73&nbsp;500 personnes qui sont atteintes d\u2019une maladie c\u0153liaque non diagnostiqu\u00e9e, soit l\u2019agent responsable de leur intol\u00e9rance au lactose. Si vous pensez \u00eatre atteint.e de la maladie c\u0153liaque, consultez votre m\u00e9decin.<\/p>\n\n\n\n<p class=\"question wp-block-paragraph\"><strong>Peut-on \u00e9tablir soi-m\u00eame un diagnostic d\u2019intol\u00e9rance au lactose?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Non. Il est important d\u2019\u00eatre \u00e0 l\u2019\u00e9coute de votre corps et de savoir quand aller chercher de l\u2019aide, mais seuls les professionnels de la sant\u00e9 peuvent \u00e9valuer si une personne est intol\u00e9rante au lactose ou non. Ces derniers peuvent \u00e9galement vous orienter dans la bonne direction pour que vous ne souffriez pas de carences ou que vous n\u2019obteniez pas de mauvaises informations.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2022\/10\/Lactose-intolerance-FAQs-FR-1583x2048-1-791x1024.webp\" alt=\"\" class=\"wp-image-4319 lazyload\"\/><noscript><img decoding=\"async\" src=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2022\/10\/Lactose-intolerance-FAQs-FR-1583x2048-1-791x1024.webp\" alt=\"\" class=\"wp-image-4319 lazyload\"\/><\/noscript><\/figure>\n<\/div>\n\n<div style=\"gap: 20px\" class=\"align-button-center ub-buttons orientation-button-row ub-flex-wrap wp-block-ub-button\" id=\"ub-button-debb3b2b-3601-4677-8960-077e86d0eaf0\"><div class=\"ub-button-container\">\n\t\t\t<a href=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2023\/02\/1-Lactose-intolerance-FAQs-FR.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"ub-button-block-main   ub-button-flex\" role=\"button\" style=\"--ub-button-background-color: #313131; --ub-button-color: #ffffff; --ub-button-border: none; --ub-button-hover-background-color: #313131; --ub-button-hover-color: #ffffff; --ub-button-hover-border: none; padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px; border-radius: 10px; \">\n\t\t\t\t<div class=\"ub-button-content-holder\" style=\"flex-direction: row\">\n\t\t\t\t\t<span class=\"ub-button-block-btn\">T\u00e9l\u00e9chargez l\u2019infographie de la FAQ sur l\u2019intol\u00e9rance au lactose<\/span>\n\t\t\t\t<\/div>\n\t\t\t<\/a>\n\t\t<\/div><\/div>\n\n<div class=\"gradient-divider\"><\/div><div class=\"sponsor-block\"><p><p>Cette ressource a \u00e9t\u00e9 rendue possible gr\u00e2ce \u00e0 une subvention \u00e0 caract\u00e8re \u00e9ducatif sans restriction de La vache qui rit.<\/p><\/p><div class=\"sponsor-details\"><div class=\"photo\" >\n<a target=\"_blank\" href=\"https:\/\/www.lavachequirit.ca\"><img decoding=\"async\" class=\"lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2022\/10\/LAUGHINGCOW.webp\"  \/><noscript><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/cdhf.ca\/wp-content\/uploads\/2022\/10\/LAUGHINGCOW.webp\"  \/><\/noscript><\/a>\n<\/div>\n        <\/div><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>References<\/strong>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(1) NHS. 2016.&nbsp;<em>Lactose Intolerance.<\/em>&nbsp;<a href=\"https:\/\/www.nhs.uk\/conditions\/lactose-intolerance\/\">https:\/\/www.nhs.uk\/conditions\/lactose-intolerance\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(2) Mayo Clinic Staff. 2018.&nbsp;<em>Lactose intolerance<\/em>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/mayoclinic.org\/diseases-conditions\/lactose-intolerance\/symptoms-causes\/syc-20374232\" target=\"_blank\" rel=\"noreferrer noopener\">mayoclinic.org\/diseases-conditions\/lactose-intolerance\/symptoms-causes\/syc-20374232<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(3) Torborg L. 2016.&nbsp;<em>Mayo Clinic Q &amp; A: Lactose intolerance can develop at any age.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/newsnetwork.mayoclinic.org\/discussion\/mayo-clinic-q-and-a-lactose-intolerance-can-develop-at-any-age\/\">newsnetwork.mayoclinic.org\/discussion\/mayo-clinic-q-and-a-lactose-intolerance-can-develop-at-any-age\/<\/a>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(4) Malik, T. (2021)&nbsp;<em>Lactose Intolerance.<\/em><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK532285\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK532285\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les personnes souffrant d\u2019intol\u00e9rance au lactose ressentent des sympt\u00f4mes d\u00e9sagr\u00e9ables apr\u00e8s avoir mang\u00e9 ou bu du lait ou des produits laitiers. Mais pourquoi? Normalement, lorsqu\u2019une personne mange quelque chose contenant du lactose, une enzyme, produite dans l\u2019intestin gr\u00eale et appel\u00e9e la lactase, d\u00e9compose le lactose en des composants simples (soit des sucres simples, appel\u00e9s le [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":8563,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"cdhf2022_sponsors_meta":[],"footnotes":""},"categories":[111,109],"tags":[145],"class_list":["post-8566","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article-fr","category-infographie","tag-intolerance-au-lactose"],"acf":{"article_writer":[3779]},"featured_image_src":"https:\/\/cdhf.ca\/wp-content\/uploads\/2023\/02\/lactose-intolerance-faqs.webp","author_info":{"display_name":"Sophie Allan","author_link":"https:\/\/cdhf.ca\/fr\/author\/sophie-allen\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L\u2019Intol\u00e9rance au lactose FAQs - Canadian Digestive Health Foundation<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cdhf.ca\/fr\/lintolerance-au-lactose-faqs\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019Intol\u00e9rance au lactose FAQs - Canadian Digestive Health Foundation\" \/>\n<meta property=\"og:description\" content=\"Les personnes souffrant d\u2019intol\u00e9rance au lactose ressentent des sympt\u00f4mes d\u00e9sagr\u00e9ables apr\u00e8s avoir mang\u00e9 ou bu du lait ou des produits laitiers. Mais pourquoi? 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