{"id":35030,"date":"2026-02-01T00:00:00","date_gmt":"2026-02-01T03:00:00","guid":{"rendered":"https:\/\/nogoyatimes.com\/?p=35030"},"modified":"2026-02-01T02:26:20","modified_gmt":"2026-02-01T05:26:20","slug":"la-cafeina-no-genera-energia-solo-retrasaria-la-fatiga-segun-estudios-cientificos","status":"publish","type":"post","link":"https:\/\/nogoyatimes.com\/?p=35030","title":{"rendered":"La cafe\u00edna no genera energ\u00eda, solo retrasar\u00eda la fatiga, seg\u00fan estudios cient\u00edficos"},"content":{"rendered":"<p>Investigaciones recientes revelan que el efecto estimulante de la cafe\u00edna enmascara la fatiga y suprime la sensaci\u00f3n de agotamiento.<\/p>\n<p>La imagen del\u00a0<b>caf\u00e9<\/b>\u00a0como aliado indiscutible de la salud se debilita ante la\u00a0<b>evidencia cient\u00edfica<\/b>\u00a0m\u00e1s reciente. Investigaciones publicadas por el\u00a0<i>Journal of the International Society of Sports Nutrition<\/i>\u00a0y\u00a0StatPearls\/National Library of Medicine advierten que, lejos de ser un\u00a0<b>estimulante inofensivo<\/b>, el caf\u00e9 \u2014a trav\u00e9s de la\u00a0<b>cafe\u00edna<\/b>\u2014 puede ocasionar efectos secundarios y riesgos que la mayor\u00eda de los consumidores desconoce o minimiza.<\/p>\n<p>La\u00a0<b>cafe\u00edna<\/b>\u00a0funciona como un\u00a0<b>estimulante del sistema nervioso central<\/b>\u00a0que no aporta energ\u00eda real, sino que bloquea la acci\u00f3n de la\u00a0<b>adenosina<\/b>, una sustancia que genera la sensaci\u00f3n de cansancio. Al inhibir la adenosina, la cafe\u00edna provoca un estado de alerta y concentraci\u00f3n, sin resolver el agotamiento subyacente. Seg\u00fan el\u00a0<i>Journal of the International Society of Sports Nutrition<\/i>, \u201cla cafe\u00edna es un amplificador de se\u00f1ales, no una fuente de energ\u00eda\u201d. Adem\u00e1s, su efecto estimula la liberaci\u00f3n de adrenalina, eleva la frecuencia card\u00edaca y sit\u00faa al cuerpo en un estado leve de estr\u00e9s.<\/p>\n<p>Aunque el caf\u00e9 suele asociarse con un aumento de energ\u00eda, la literatura cient\u00edfica enfatiza que esta percepci\u00f3n es enga\u00f1osa. La\u00a0<b>cafe\u00edna<\/b>\u00a0s\u00f3lo disimula la fatiga, sin aportar calor\u00edas ni restaurar la energ\u00eda f\u00edsica, como resalta el estudio. Por ello, la sensaci\u00f3n de vitalidad es pasajera y artificial: la fatiga persiste, aunque no se perciba de inmediato.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">El consumo continuado de\u00a0<b>cafe\u00edna<\/b>\u00a0produce tolerancia. Es decir, cada vez se requieren dosis mayores para lograr el mismo efecto, ya que el organismo adapta sus receptores. Los estudios mencionan que la abstinencia repentina suele provocar dolor de cabeza, fatiga e irritabilidad en consumidores habituales.<\/p>\n<div class=\"visual__image\"><img loading=\"lazy\" decoding=\"async\" class=\"global-image\" src=\"https:\/\/www.infobae.com\/resizer\/v2\/VXNFCEDR6ZH5PDWLSL4V24SAII.jpeg?auth=e12d6fc8fed52abc8c8df0a21d4cae035e4c260218dd65a2e0f927fa6e2ce44f&amp;smart=true&amp;width=350&amp;height=194&amp;quality=85\" alt=\"El consumo de cafe\u00edna en\" width=\"1329\" height=\"736\" \/>El consumo de cafe\u00edna en dosis elevadas incrementa el riesgo de insomnio, ansiedad, nerviosismo y agrava problemas de salud mental, seg\u00fan expertos (Imagen Ilustrativa Infobae)<\/div>\n<div class=\"inline_2_DSK ad-wrapper ad-desktop\">\n<div class=\"infobae\/salud\/ciencia\/nota\/inline_2_DSK arcad up-show\" data-google-query-id=\"CPOCqe26s5IDFU1MuAQdPMYqjQ\">La cafe\u00edna tiene impactos negativos en el\u00a0<b>ciclo sue\u00f1o-vigilia<\/b>. Ambas fuentes destacan que la cafe\u00edna puede retrasar la conciliaci\u00f3n del sue\u00f1o y disminuir la profundidad del descanso varias horas despu\u00e9s de su ingesta, deteriorando la recuperaci\u00f3n f\u00edsica incluso sin que la persona lo perciba. Los investigadores aconsejan evitar su consumo al menos seis horas antes de dormir.<\/div>\n<\/div>\n<div data-google-query-id=\"CPOCqe26s5IDFU1MuAQdPMYqjQ\">La cafe\u00edna tiene impactos negativos en el\u00a0<b>ciclo sue\u00f1o-vigilia<\/b>. Ambas fuentes destacan que la cafe\u00edna puede retrasar la conciliaci\u00f3n del sue\u00f1o y disminuir la profundidad del descanso varias horas despu\u00e9s de su ingesta, deteriorando la recuperaci\u00f3n f\u00edsica incluso sin que la persona lo perciba. Los investigadores aconsejan evitar su consumo al menos seis horas antes de dormir.<\/div>\n<div data-google-query-id=\"CPOCqe26s5IDFU1MuAQdPMYqjQ\">\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">Sobre la posible relaci\u00f3n entre la\u00a0<b>cafe\u00edna y la deshidrataci\u00f3n<\/b>, los cient\u00edficos sostienen que el efecto diur\u00e9tico de la cafe\u00edna en dosis habituales, por debajo de 400 mg diarios, es leve y no incrementa de for<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">ma significativa el volumen de orina en personas consumidoras regulares. Solo ingestas elevadas, a partir de 500 mg, pueden causar un aumento transitorio en la eliminaci\u00f3n de l\u00edquidos. La hidrataci\u00f3n, en la pr\u00e1ctica, depende m\u00e1s de otros factores como el ejercicio y la gen\u00e9tica.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">No existen pruebas s\u00f3lidas sobre el uso de la\u00a0<b>cafe\u00edna como quemador de grasa<\/b>\u00a0o adelgazante. Aunque ciertos estudios reportan una ligera elevaci\u00f3n en la oxidaci\u00f3n de grasas durante el ejercicio, el\u00a0<i>Journal of the International Society of Sports Nutrition<\/i>\u00a0subraya que los resultados son contradictorios y que la reducci\u00f3n de peso de forma sostenida por la cafe\u00edna a\u00fan no se ha demostrado.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">El v\u00ednculo entre la\u00a0<b>cafe\u00edna<\/b>\u00a0y la salud mental presenta matices. Ambas fuentes reconocen que el consumo moderado podr\u00eda tener efectos positivos en el \u00e1nimo, pero advierten que dosis altas pueden aumentar la\u00a0<b>ansiedad<\/b>, el nerviosismo y la irritabilidad, adem\u00e1s de agravar los trastornos del sue\u00f1o y complicar cuadros depresivos. El riesgo se incrementa notablemente cuando se superan los 400 mg diarios o en personas con sensibilidad especial.<\/p>\n<div class=\"visual__image\"><img loading=\"lazy\" decoding=\"async\" class=\"global-image\" src=\"https:\/\/www.infobae.com\/resizer\/v2\/AJNCAWFFGFBP3M5AWCSSN5CJNU.png?auth=a3269f3cc6ad96abe76f01b0c040f0b47947a4aa07a654bc21a76efd7967735a&amp;smart=true&amp;width=350&amp;height=197&amp;quality=85\" alt=\"Diversos estudios cient\u00edficos advierten que\" width=\"1920\" height=\"1080\" \/>Diversos estudios cient\u00edficos advierten que la cafe\u00edna puede provocar tolerancia, dependencia f\u00edsica y s\u00edndrome de abstinencia en sus consumidores habituales<\/div>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">Seg\u00fan los estudios citados, la\u00a0<b>cafe\u00edna<\/b>\u00a0eleva transitoriamente la presi\u00f3n arterial y la frecuencia card\u00edaca. La mayor\u00eda de los adultos sanos puede tolerar hasta 400 mg diarios, pero las personas con enfermedades card\u00edacas o factores de riesgo pueden experimentar taquicardias o arritmias si exceden esa cantidad. La dosis m\u00e1xima recomendada internacionalmente para adultos es de 400 mg al d\u00eda, y para embarazadas no deber\u00eda superar los 200 mg.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">Durante el\u00a0<b>embarazo<\/b>, el consumo de cafe\u00edna s asocia, seg\u00fan ambas fuentes, a un mayor riesgo de bajo peso al nacer, aborto espont\u00e1neo y retrasos en el desarrollo fetal. Las principales agencias sanitarias como el NIH y la EFSA recomiendan evitar superar los 200 mg diarios en gestantes. Para mujeres en periodo de lactancia, ingestas elevadas pueden causar insomnio o irritabilidad en el reci\u00e9n nacido.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">El\u00a0<i>Journal of the International Society of Sports Nutrition<\/i>\u00a0se\u00f1ala que consumir cuatro tazas de caf\u00e9 al d\u00eda (aproximadamente 400 mg de cafe\u00edna), sobre todo en mujeres, puede incrementar el riesgo de reducci\u00f3n de la densidad mineral \u00f3sea y fracturas. Este efecto podr\u00eda deberse a alteraciones en los receptores de adenosina y en la asimilaci\u00f3n de calcio y vitamina D. Sin embargo, la evidencia es variable y no permite generalizar conclusiones.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">Aunque la\u00a0<b>cafe\u00edna<\/b>\u00a0genera s\u00edndrome de abstinencia y dependencia f\u00edsica, su clasificaci\u00f3n como sustancia \u201cadictiva\u201d sigue en debate cient\u00edfico. En las investigaciones se explica que no cumple todos los criterios m\u00e9dicos para ser considerada adictiva plenamente, aunque s\u00ed puede generar dependencia significativa en parte de la poblaci\u00f3n.<\/p>\n<div class=\"visual__image\"><img loading=\"lazy\" decoding=\"async\" class=\"global-image\" src=\"https:\/\/www.infobae.com\/resizer\/v2\/5WBHICDTEVA4BGTAIVEFGYYSQA.png?auth=46079a66d22fd9c305fe99bf4e58251027a48c4fa30db793b3ea99df31f9dd9d&amp;smart=true&amp;width=350&amp;height=233&amp;quality=85\" alt=\"El consumo excesivo de caf\u00e9\" width=\"1536\" height=\"1024\" \/>El consumo excesivo de caf\u00e9 puede reducir la densidad mineral \u00f3sea en mujeres (Imagen Ilustrativa Infobae)<\/div>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">La intoxicaci\u00f3n por\u00a0<b>cafe\u00edna<\/b>\u00a0ocurre, principalmente, tras consumir preparados concentrados o supleentos y no suele deberse al consumo de\u00a0<b>bebidas comunes<\/b>\u00a0como el caf\u00e9 o el t\u00e9. La\u00a0<b>dosis letal<\/b>\u00a0estimada en humanos supera los 10 gramos, equivalentes a unas 100 tazas de caf\u00e9. Aunque es poco frecuente, en casos graves pueden presentarse convulsiones, arritmias y muerte, especialmente si se ingieren polvos y comprimidos de forma accidental o intencionada.<\/p>\n<p class=\"paragraph\" data-mrf-recirculation=\"Links inline\">El\u00a0<b>caf\u00e9<\/b> y sus derivados forman parte de la dieta global y son seguros en cantidades moderadas, pero la literatura cient\u00edfica subraya la presencia de riesgos, sobre todo en poblaciones vulnerables y ante consumos elevados. Aunque la percepci\u00f3n popular tiende a exagerar sus beneficios, los efectos secundarios y los peligros potenciales est\u00e1n bien documentados y la ciencia contin\u00faa explorando sus verdaderos l\u00edmites. Fuente: Infobae<\/p>\n<p data-mrf-recirculation=\"Links inline\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2287\" src=\"http:\/\/nogoyatimes.com\/wp-content\/uploads\/2023\/06\/11-COOPAR-1.png\" alt=\"\" width=\"720\" height=\"90\" srcset=\"https:\/\/nogoyatimes.com\/wp-content\/uploads\/2023\/06\/11-COOPAR-1.png 720w, https:\/\/nogoyatimes.com\/wp-content\/uploads\/2023\/06\/11-COOPAR-1-300x38.png 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/nogoyaradios.com\/\"><strong>Escuch\u00e1 La 100 #Nogoy\u00e1<\/strong><\/a><strong>\u00a0en vivo<\/strong><strong>\u00a0Seguinos en\u00a0<\/strong><a href=\"https:\/\/www.facebook.com\/nogoyaradiosnog\"><strong>Facebook<\/strong><\/a><strong>\u00a0Seguinos en\u00a0<\/strong><a href=\"https:\/\/twitter.com\/NogoyaRadios\"><strong>Twitter<\/strong><\/a><\/p>\n<p style=\"text-align: center\"><strong><em>Nogoy\u00e1 Radios es una Agencia de Medios que cuenta con espacios publicitarios adecuados para la difusi\u00f3n de su Empresa, Profesi\u00f3n y\/o Servicios.<\/em><\/strong><a href=\"https:\/\/web.facebook.com\/hashtag\/nogoy%C3%A1\"><strong><em>#Nogoy\u00e1<\/em><\/strong><\/a><strong><em>\u00a0Radios\u00a0<\/em><\/strong><strong><em>3435-429289 \/ 3435-616203 contacto@nogoyaradios.com<\/em><\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Investigaciones recientes revelan que el efecto estimulante de la cafe\u00edna enmascara la fatiga y suprime la sensaci\u00f3n de agotamiento. La imagen del\u00a0caf\u00e9\u00a0como aliado indiscutible de la salud se debilita ante la\u00a0evidencia cient\u00edfica\u00a0m\u00e1s reciente. Investigaciones publicadas por el\u00a0Journal of the International&#8230;<\/p>\n","protected":false},"author":2,"featured_media":35031,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,3,8],"tags":[],"class_list":["post-35030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internacionales","category-noticias","category-salud"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La cafe\u00edna no genera energ\u00eda, solo retrasar\u00eda la fatiga, seg\u00fan estudios cient\u00edficos - Nogoy\u00e1 Times<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/nogoyatimes.com\/?p=35030\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La cafe\u00edna no genera energ\u00eda, solo retrasar\u00eda la fatiga, seg\u00fan estudios cient\u00edficos - Nogoy\u00e1 Times\" \/>\n<meta property=\"og:description\" content=\"Investigaciones recientes revelan que el efecto estimulante de la cafe\u00edna enmascara la fatiga y suprime la sensaci\u00f3n de agotamiento. La imagen del\u00a0caf\u00e9\u00a0como aliado indiscutible de la salud se debilita ante la\u00a0evidencia cient\u00edfica\u00a0m\u00e1s reciente. 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La imagen del\u00a0caf\u00e9\u00a0como aliado indiscutible de la salud se debilita ante la\u00a0evidencia cient\u00edfica\u00a0m\u00e1s reciente. 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