{"id":296713,"date":"2026-06-25T00:39:17","date_gmt":"2026-06-25T00:39:17","guid":{"rendered":"http:\/\/6a3c4c1595ffcb3c7418b196"},"modified":"2026-06-25T00:39:17","modified_gmt":"2026-06-25T00:39:17","slug":"la-extrana-relacion-entre-exponernos-a-la-luz-del-dia-y-la-probabilidad-de-desarrollar-demencia","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=296713","title":{"rendered":"La extra\u00f1a relaci\u00f3n entre exponernos a la luz del d\u00eda y la probabilidad de desarrollar demencia"},"content":{"rendered":"<p>Un estudio que analiz\u00f3 los datos de m\u00e1s de 87,557 personas en Reino Unido encontr\u00f3 que quienes estuvieron m\u00e1s expuestos a la luz del d\u00eda presentaron un menor riesgo de desarrollar demencia en los a\u00f1os siguientes.<\/p>\n<p>El reporte, publicado en la revista <a data-offer-url=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/gps3.70039?utm_campaign=WRH-6-15-26-wly&amp;utm_content=null&amp;utm_medium=email&amp;utm_source=muckrack\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/gps3.70039?utm_campaign=WRH-6-15-26-wly&amp;utm_content=null&amp;utm_medium=email&amp;utm_source=muckrack&quot;}\" href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/gps3.70039?utm_campaign=WRH-6-15-26-wly&amp;utm_content=null&amp;utm_medium=email&amp;utm_source=muckrack\" rel=\"nofollow noopener\" target=\"_blank\"><em>General Psychiatry<\/em><\/a>, sigui\u00f3 durante ocho a\u00f1os a adultos sin demencia con una edad promedio de 62 a\u00f1os. Durante ese tiempo, los participantes llevaron un sensor de luz en la mu\u00f1eca que registraba cu\u00e1nta iluminaci\u00f3n recib\u00edan a lo largo del d\u00eda y la noche.<\/p>\n<p>Los investigadores observaron que quienes registraron una exposici\u00f3n promedio superior a 1,000 lux tuvieron un riesgo 16% menor de <a href=\"https:\/\/es.wired.com\/articulos\/la-actividad-cerebral-al-dormir-podria-ser-clave-para-anticipar-la-demencia\">desarrollar demencia<\/a> en comparaci\u00f3n con aquellos que permanecieron por debajo de ese umbral. La medida equivale aproximadamente a caminar al aire libre en una ma\u00f1ana nublada o trabajar cerca de una ventana bien iluminada durante el d\u00eda.<\/p>\n<hr>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"20.974789915966\">\n<div class=\"ContentCardEmbedImage-bqahne fjmzkP content-card-embed__image\" data-testid=\"ContentCardEmbedImage\"><span class=\"SpanWrapper-kFnjvc eKnjjD responsive-asset\"><picture class=\"ResponsiveImagePicture-jKunQM gjCCFj responsive-image\"><img decoding=\"async\" alt=\"Concepto de un escaneo cerebral para identificar demencia.\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/69fe3068e0ceba7da52e3bdf\/master\/w_120,c_limit\/GettyImages-941361062.jpg 120w, https:\/\/media.es.wired.com\/photos\/69fe3068e0ceba7da52e3bdf\/master\/w_240,c_limit\/GettyImages-941361062.jpg 240w, https:\/\/media.es.wired.com\/photos\/69fe3068e0ceba7da52e3bdf\/master\/w_320,c_limit\/GettyImages-941361062.jpg 320w, https:\/\/media.es.wired.com\/photos\/69fe3068e0ceba7da52e3bdf\/master\/w_640,c_limit\/GettyImages-941361062.jpg 640w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/69fe3068e0ceba7da52e3bdf\/master\/w_775%2Cc_limit\/GettyImages-941361062.jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"22.285714285714\">\n<div class=\"BaseText-fEwdHD ContentCardEmbedHed-kDKGDs fUtEc dlHXUJ content-card-embed__hed\" data-testid=\"ContentCardEmbedHed\"><a class=\"BaseLink-haTOKm ContentCardEmbedHedLink-iBZsco gAoKdC hhUFQU content-card-embed__hed-link link\" href=\"https:\/\/es.wired.com\/articulos\/8-habitos-sencillos-que-reducen-el-riesgo-de-alzheimer\" data-testid=\"ContentCardEmbedHedLink\">8 h\u00e1bitos sencillos que reducen el riesgo de Alzheimer y otras formas de demencia<\/a><\/div>\n<p>Desde comer huevo hasta pasar m\u00e1s tiempo con amigos, los h\u00e1bitos para reducir el riesgo de demencia y Alzheimer suelen ser bastante sencillos de realizar.<\/p>\n<\/div>\n<\/div>\n<hr>\n<p>La cifra resulta llamativa porque la iluminaci\u00f3n t\u00edpica de una oficina o una vivienda suele rondar entre los 300 y 500 lux, apenas una fracci\u00f3n del umbral asociado con un menor riesgo. Adem\u00e1s, en los modelos predictivos del estudio, recibir menos de 42 minutos diarios de <a href=\"https:\/\/es.wired.com\/articulos\/cientificos-logran-reconfigurar-la-energia-de-la-luz-solar-con-un-cristal\">luz intensa<\/a> (m\u00e1s de 5,000 lux) apareci\u00f3 como un factor asociado al riesgo de demencia con una importancia comparable a la de la obesidad, el consumo de alcohol o la contaminaci\u00f3n atmosf\u00e9rica.<\/p>\n<p>El efecto tambi\u00e9n pareci\u00f3 m\u00e1s pronunciado entre las personas portadoras del gen APOE \u03b54, la principal variante gen\u00e9tica asociada con la enfermedad de Alzheimer. En este grupo, una mayor exposici\u00f3n a la luz se relacion\u00f3 con reducciones del riesgo de entre 19 y 27%, dependiendo de la medida utilizada, aunque el estudio no fue dise\u00f1ado para analizar <a href=\"https:\/\/es.wired.com\/articulos\/el-alzheimer-presenta-signos-detectables-incluso-10-anos-antes-de-manifestarse\">Alzheimer<\/a> de manera espec\u00edfica.<\/p>\n<p>El estudio cuenta con una base de datos muy amplia, pero su metodolog\u00eda es observacional. Esto significa que el v\u00ednculo identificado entre la exposici\u00f3n a la luz y la demencia no debe interpretarse como una relaci\u00f3n causal. En otras palabras, los resultados no demuestran que aumentar la exposici\u00f3n al sol prevenga la demencia (aunque s\u00ed puede aumentar el riesgo de c\u00e1ncer de piel <a href=\"https:\/\/es.wired.com\/articulos\/hay-una-ola-alarmante-de-desinformacion-sobre-protectores-solares-en-tiktok\">si no usas un protector adecuado<\/a>). Lo que muestran es una asociaci\u00f3n estad\u00edstica entre recibir m\u00e1s luz durante el d\u00eda y desarrollar menos casos de demencia a\u00f1os despu\u00e9s.<\/p>\n<p>Una explicaci\u00f3n alternativa es que las personas con mejor salud f\u00edsica y cerebral tambi\u00e9n <a href=\"https:\/\/es.wired.com\/articulos\/las-largas-caminatas-pueden-retrasar-los-efectos-del-alzheimer-por-varios-anos\">tienden a ser m\u00e1s activas<\/a>, pasan m\u00e1s tiempo fuera de casa y acumulan otros factores protectores que contribuyen a reducir el riesgo de deterioro cognitivo.<\/p>\n<p>Los investigadores creen que una posible explicaci\u00f3n del fen\u00f3meno se encuentra en el sistema circadiano, el conjunto de mecanismos biol\u00f3gicos que regulan los <a href=\"https:\/\/es.wired.com\/articulos\/como-afecta-el-cambio-de-hora-a-tu-cuerpo-y-a-tu-sueno\">ciclos de sue\u00f1o y vigilia<\/a>. La luz del d\u00eda es la principal se\u00f1al que utiliza el cerebro para sincronizar nuestro reloj interno. Diversos estudios han mostrado que las alteraciones de los ritmos circadianos son frecuentes en personas con demencia y podr\u00edan contribuir al deterioro cognitivo.<\/p>\n<p>La idea de que la luz pueda influir en la salud no surge de la nada. Diversas investigaciones han asociado una mayor exposici\u00f3n a la luz diurna con un mejor estado de \u00e1nimo, un menor riesgo de depresi\u00f3n y una regulaci\u00f3n m\u00e1s estable de los ciclos de sue\u00f1o y vigilia. La terapia con luz brillante incluso forma parte del tratamiento de algunos trastornos afectivos y alteraciones del reloj biol\u00f3gico.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un estudio que analiz\u00f3 los datos de&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":296714,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_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":[46],"tags":[],"class_list":["post-296713","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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