{"id":192343,"date":"2026-08-24T12:10:16","date_gmt":"2026-08-24T10:10:16","guid":{"rendered":"https:\/\/newmobility.news\/?p=192343"},"modified":"2026-08-24T12:02:09","modified_gmt":"2026-08-24T10:02:09","slug":"higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious","status":"publish","type":"post","link":"https:\/\/newmobility.news\/fr\/2026\/08\/24\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\/","title":{"rendered":"Des niveaux de CO\u2082 plus \u00e9lev\u00e9s augmentent la densit\u00e9 calorique des aliments, mais ne les rendent pas plus nutritifs"},"content":{"rendered":"<p>Des scientifiques de l'universit\u00e9 de Leyde ont mis en \u00e9vidence que les plantes poussent plus vite en raison d'une augmentation de<span class=\"Y2IQFc\" lang=\"en\">\u00a0CO\u2082.\u00a0<\/span><span class=\"Y2IQFc\" lang=\"en\">Le revers de la m\u00e9daille, c'est qu'ils deviennent plus caloriques mais moins nutritifs. <\/span><span class=\"Y2IQFc\" lang=\"en\">La valeur nutritionnelle de la quasi-totalit\u00e9 des cultures a diminu\u00e9 \u2013 les plantes<\/span><span class=\"Y2IQFc\" lang=\"en\"> contiennent moins de prot\u00e9ines, de fer et d'autres nutriments.\u00a0<\/span><\/p><p>L'\u00e9tude de Leyde a regroup\u00e9 des milliers d'observations portant sur des dizaines de cultures et de nutriments. Sa conclusion g\u00e9n\u00e9rale est que des concentrations \u00e9lev\u00e9es de CO\u2082 ont tendance \u00e0 modifier la composition des plantes en augmentant leur teneur en carbone et en glucides, tout en r\u00e9duisant les concentrations de plusieurs min\u00e9raux essentiels et, souvent, de prot\u00e9ines.<\/p><div class=\"leaky_paywall_message_wrap\"><div id=\"leaky_paywall_message\">Ce contenu a \u00e9t\u00e9 archiv\u00e9. <a href=\"https:\/\/newmobility.news\/fr\/subscription\/\">Connectez-vous ou inscrivez-vous<\/a> \u00e0 un niveau qui donne acc\u00e8s au contenu archiv\u00e9.<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Scientists at Leiden University have found evidence that plants grow faster due to increased\u00a0CO2.\u00a0The flip side is that they become higher in calories but less nutritious. The nutritional value of virtually all crops has declined \u2013 plants contain less protein, iron, and other nutrients.\u00a0The Leiden study pooled thousands of observations across dozens of crops and [&hellip;]<\/p>\n","protected":false},"author":175,"featured_media":192374,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\r\n\r\n{excerpt}\r\n\r\n{url}","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},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[29,51851,77201,4],"tags":[],"class_list":["post-192343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environment","category-health","category-study","category-top-stories-today"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=967%2C640&ssl=1",967,640,false],"thumbnail":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=150%2C150&ssl=1",150,150,true],"medium":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=300%2C199&ssl=1",300,199,true],"medium_large":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=640%2C424&ssl=1",640,424,true],"large":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=640%2C424&ssl=1",640,424,true],"1536x1536":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=967%2C640&ssl=1",967,640,true],"2048x2048":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=967%2C640&ssl=1",967,640,true],"trp-custom-language-flag":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=18%2C12&ssl=1",18,12,true],"related-thumb":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=640%2C480&ssl=1",640,480,true],"gform-image-choice-sm":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=300%2C300&ssl=1",300,300,true],"gform-image-choice-md":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=400%2C400&ssl=1",400,400,true],"gform-image-choice-lg":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=600%2C600&ssl=1",600,600,true],"mailchimp":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=560%2C371&ssl=1",560,371,true],"unipress-phone":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=640%2C100&ssl=1",640,100,true],"unipress-tablet":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=967%2C240&ssl=1",967,240,true],"unipress-tablet-portrait":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=967%2C180&ssl=1",967,180,true],"unipress-tablet-landscape":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=967%2C180&ssl=1",967,180,true],"unipress-smartphone":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=967%2C168&ssl=1",967,168,true],"unipress-wide-screen":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?resize=967%2C180&ssl=1",967,180,true]},"post_excerpt_stackable_v2":"<p>Scientists at Leiden University have found evidence that plants grow faster due to increased\u00a0CO2.\u00a0The flip side is that they become higher in calories but less nutritious. The nutritional value of virtually all crops has declined \u2013 plants contain less protein, iron, and other nutrients.\u00a0The Leiden study pooled thousands of observations across dozens of crops and nutrients. Its overall conclusion is that elevated CO\u2082 tends to shift plant composition toward greater carbon and carbohydrate content, while reducing concentrations of several essential minerals and often protein.This content has been archived. Log in or Subscribe to a level that has access to archived&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/newmobility.news\/fr\/category\/environment\/\" rel=\"category tag\">Environment<\/a>, <a href=\"https:\/\/newmobility.news\/fr\/category\/health\/\" rel=\"category tag\">Health<\/a>, <a href=\"https:\/\/newmobility.news\/fr\/category\/study\/\" rel=\"category tag\">Study<\/a>, <a href=\"https:\/\/newmobility.news\/fr\/category\/top-stories-today\/\" rel=\"category tag\">Top Stories Today<\/a>","author_info_v2":{"name":"Hilde Van Raemdonck","url":"https:\/\/newmobility.news\/fr\/author\/hilde-van-raemdonck\/"},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Higher CO2 levels make food more calorie-dense but not more nutritious - newmobility.news<\/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:\/\/newmobility.news\/fr\/2026\/08\/24\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Higher CO2 levels make food more calorie-dense but not more nutritious - newmobility.news\" \/>\n<meta property=\"og:description\" content=\"Scientists at Leiden University have found evidence that plants grow faster due to increased\u00a0CO2.\u00a0The flip side is that they become higher in calories but less nutritious. The nutritional value of virtually all crops has declined \u2013 plants contain less protein, iron, and other nutrients.\u00a0The Leiden study pooled thousands of observations across dozens of crops and [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/newmobility.news\/fr\/2026\/08\/24\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\/\" \/>\n<meta property=\"og:site_name\" content=\"newmobility.news\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/search\/top\/?q=newmobility.news\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-24T10:10:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/08\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=967%2C640&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"967\" \/>\n\t<meta property=\"og:image:height\" content=\"640\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Hilde Van Raemdonck\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@jorisvry\" \/>\n<meta name=\"twitter:site\" content=\"@jorisvry\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Hilde Van Raemdonck\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture est.\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/08\\\/24\\\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/08\\\/24\\\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\\\/\"},\"author\":{\"name\":\"Hilde Van Raemdonck\",\"@id\":\"https:\\\/\\\/newmobility.news\\\/#\\\/schema\\\/person\\\/7540fd72a981bf6a315ba1b874c2a464\"},\"headline\":\"Higher CO2 levels make food more calorie-dense but not more nutritious\",\"datePublished\":\"2026-08-24T10:10:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/08\\\/24\\\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\\\/\"},\"wordCount\":684,\"publisher\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/08\\\/24\\\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/newmobility.news\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/Scherm%C2%ADafbeelding-2026-08-24-om-11.27.23.png?fit=967%2C640&ssl=1\",\"articleSection\":[\"Environment\",\"Health\",\"Study\",\"Top Stories Today\"],\"inLanguage\":\"fr-BE\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/08\\\/24\\\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\\\/\",\"url\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/08\\\/24\\\/higher-co2-levels-make-food-more-calorie-dense-but-not-more-nutritious\\\/\",\"name\":\"Higher CO2 levels make food more calorie-dense but not more nutritious - 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