{"id":4148,"date":"2026-10-23T19:56:58","date_gmt":"2026-10-23T23:56:58","guid":{"rendered":"https:\/\/canasanta.ca\/?p=4148"},"modified":"2026-10-23T20:01:53","modified_gmt":"2026-10-24T00:01:53","slug":"ultraprocesados-lesion-vascular-cerebro-estudio-canada","status":"publish","type":"post","link":"https:\/\/canasanta.ca\/en\/salud\/nutricion\/ultraprocesados-lesion-vascular-cerebro-estudio-canada\/","title":{"rendered":"Los ultraprocesados dejan se\u00f1ales silenciosas en el cerebro, seg\u00fan un estudio canadiense"},"content":{"rendered":"<h3>Un amplio estudio canadiense encontr\u00f3 que los adultos de mediana edad que consum\u00edan m\u00e1s alimentos ultraprocesados presentaban con mayor frecuencia se\u00f1ales de lesi\u00f3n vascular cerebral detectables por resonancia magn\u00e9tica, incluso sin s\u00edntomas evidentes. El hallazgo no demuestra que estos alimentos causen directamente el da\u00f1o, pero a\u00f1ade una nueva se\u00f1al de alerta sobre una dieta cada vez m\u00e1s habitual.<\/h3>\n<p>La investigaci\u00f3n, publicada el 15 de octubre de 2026 en <em>JAMA Network Open<\/em>, analiz\u00f3 a 8.783 adultos de entre 35 y 69 a\u00f1os participantes en dos grandes cohortes canadienses. Ninguno ten\u00eda enfermedad cardiovascular al incorporarse al estudio.<\/p>\n<div style=\"height:34px\" aria-hidden=\"true\"><\/div>\n<h2><strong>Lo que apareci\u00f3 en las resonancias<\/strong><\/h2>\n<p>Los investigadores compararon la alimentaci\u00f3n habitual de los participantes con mediciones de adiposidad, pruebas cognitivas y resonancias magn\u00e9ticas cerebrales. En el grupo con mayor consumo de ultraprocesados, estos productos representaban alrededor del 45 % de las porciones diarias, frente a aproximadamente el 16 % entre quienes menos los consum\u00edan.<\/p>\n<p>Las personas del grupo de mayor consumo tuvieron cerca de un 40 % m\u00e1s de probabilidades de presentar lesi\u00f3n vascular cerebral definida por resonancia magn\u00e9tica que las del grupo de menor consumo. Estas alteraciones pueden incluir peque\u00f1os infartos silenciosos y cambios en la sustancia blanca que aparecen antes de que una persona note s\u00edntomas.<\/p>\n<p>El estudio tambi\u00e9n encontr\u00f3 una asociaci\u00f3n consistente entre mayor consumo de ultraprocesados y mayor adiposidad. Sin embargo, no detect\u00f3 una asociaci\u00f3n significativa con el rendimiento en las pruebas cognitivas realizadas a los participantes.<\/p>\n<div style=\"height:34px\" aria-hidden=\"true\"><\/div>\n<h2><strong>Una asociaci\u00f3n que no equivale a causalidad<\/strong><\/h2>\n<p>El dato exige cautela. Se trata de un estudio transversal: dieta, composici\u00f3n corporal y se\u00f1ales cerebrales fueron evaluadas dentro de un dise\u00f1o que no permite establecer qu\u00e9 ocurri\u00f3 primero. Por tanto, los resultados no prueban que comer ultraprocesados provoque directamente una lesi\u00f3n cerebral ni que conduzca necesariamente a un accidente cerebrovascular o a demencia.<\/p>\n<p>Los propios autores se\u00f1alan adem\u00e1s que la asociaci\u00f3n con la lesi\u00f3n vascular cerebral fue sensible a definiciones alternativas de la exposici\u00f3n alimentaria. Esa limitaci\u00f3n hace especialmente importante evitar conclusiones absolutas y esperar estudios longitudinales que puedan establecer temporalidad.<\/p>\n<div style=\"height:34px\" aria-hidden=\"true\"><\/div>\n<h2><strong>Qu\u00e9 alimentos entran en esta categor\u00eda<\/strong><\/h2>\n<p>Entre los productos clasificados habitualmente como ultraprocesados aparecen refrescos, snacks empaquetados, cereales azucarados, fideos instant\u00e1neos y muchas comidas congeladas listas para consumir. En el estudio, a medida que aumentaba su presencia en la dieta disminu\u00eda la proporci\u00f3n de alimentos enteros o m\u00ednimamente procesados.<\/p>\n<p>Ese desplazamiento tambi\u00e9n importa. Entre los mayores consumidores, los alimentos enteros constitu\u00edan alrededor del 41 % de las porciones diarias, mientras que entre quienes menos ultraprocesados consum\u00edan alcanzaban aproximadamente el 68 %.<\/p>\n<div style=\"height:34px\" aria-hidden=\"true\"><\/div>\n<h2><strong>Una se\u00f1al visible antes de los s\u00edntomas<\/strong><\/h2>\n<p>La relevancia del trabajo est\u00e1 en que estudi\u00f3 adultos de mediana edad aparentemente sanos y encontr\u00f3 cambios estructurales que pueden permanecer silenciosos. Los investigadores consideran que seguir a estos participantes y repetir las resonancias permitir\u00e1 saber si las diferencias observadas anticipan problemas cl\u00ednicos posteriores.<\/p>\n<p>Por ahora, el resultado no convierte a un alimento concreto en causa de enfermedad cerebral. S\u00ed refuerza una pregunta de salud p\u00fablica cada vez m\u00e1s importante: qu\u00e9 ocurre cuando los productos ultraprocesados dejan de ser una parte ocasional de la dieta y desplazan de forma sostenida a frutas, verduras, granos y otros alimentos m\u00ednimamente procesados.<\/p>","protected":false},"excerpt":{"rendered":"<p>Un amplio estudio canadiense encontr\u00f3 que los adultos de mediana edad que consum\u00edan m\u00e1s alimentos ultraprocesados presentaban con mayor frecuencia se\u00f1ales de lesi\u00f3n vascular cerebral detectables por resonancia magn\u00e9tica, incluso sin s\u00edntomas evidentes. El hallazgo no demuestra que estos alimentos causen directamente el da\u00f1o, pero a\u00f1ade una nueva se\u00f1al de alerta sobre una dieta cada [&hellip;]<\/p>\n","protected":false},"author":284226809,"featured_media":5259,"comment_status":"open","ping_status":"open","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,"_wpcom_ai_launchpad_first_post":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":"","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},"jetpack_post_was_ever_published":false},"categories":[33205457,33205443],"tags":[33207081,33207084,33207082,33207083,33206053],"class_list":["post-4148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-al-dia","category-nutricion","tag-alimentos-ultraprocesados","tag-jama-network-open","tag-lesion-vascular-cerebral","tag-resonancia-magnetica","tag-salud-cerebral"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Los ultraprocesados dejan se\u00f1ales silenciosas en el cerebro, seg\u00fan un estudio canadiense - Ca\u00f1asanta<\/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:\/\/canasanta.ca\/en\/health\/nutricion\/ultraprocesados-lesion-vascular-cerebro-estudio-canada\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Los ultraprocesados dejan se\u00f1ales silenciosas en el cerebro, seg\u00fan un estudio canadiense\" \/>\n<meta property=\"og:description\" content=\"Un amplio estudio canadiense encontr\u00f3 que los adultos de mediana edad que consum\u00edan m\u00e1s alimentos ultraprocesados presentaban con mayor frecuencia se\u00f1ales de lesi\u00f3n vascular cerebral detectables por resonancia magn\u00e9tica, incluso sin s\u00edntomas evidentes. 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