{"id":7190,"date":"2026-07-06T16:18:18","date_gmt":"2026-07-06T15:18:18","guid":{"rendered":"https:\/\/neuropsiquiatria.pt\/?p=7190"},"modified":"2026-07-06T16:18:18","modified_gmt":"2026-07-06T15:18:18","slug":"ligacao-ataques-de-panico-cafeina","status":"publish","type":"post","link":"https:\/\/neuropsiquiatria.pt\/en\/ligacao-ataques-de-panico-cafeina\/","title":{"rendered":"Caffeine and Panic Attacks: What\u2019s the Link?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"7190\" class=\"elementor elementor-7190\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e0ca7b e-flex e-con-boxed e-con e-parent\" data-id=\"4e0ca7b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-487f6a5 elementor-widget elementor-widget-text-editor\" data-id=\"487f6a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal\" data-sourcepos=\"3:1-3:285;45-329\"><strong>Short answer:<\/strong> In some people, caffeine can cause symptoms identical to those of a panic attack. The stimulation of the nervous system and the heart, and the tremors it can cause, are identical to those of a panic attack. People who are more sensitive to caffeine should avoid high doses.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-254d030 elementor-widget elementor-widget-post-info\" data-id=\"254d030\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-87d2c88 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/neuropsiquiatria.pt\/en\/2026\/07\/06\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-calendar\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M12 192h424c6.6 0 12 5.4 12 12v260c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V204c0-6.6 5.4-12 12-12zm436-44v-36c0-26.5-21.5-48-48-48h-48V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H160V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H48C21.5 64 0 85.5 0 112v36c0 6.6 5.4 12 12 12h424c6.6 0 12-5.4 12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>6 July 2026<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-406b8067 elementor-widget elementor-widget-text-editor\" data-id=\"406b8067\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-7311\" src=\"https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe.webp\" alt=\"Mulher jovem com express\u00e3o ansiosa a segurar uma ch\u00e1vena de caf\u00e9, representando a poss\u00edvel liga\u00e7\u00e3o entre cafe\u00edna e a cria\u00e7\u00e3o de um ciclo de ansiedade, palpita\u00e7\u00f5es e ataques de p\u00e2nico.\" width=\"2000\" height=\"1354\" srcset=\"https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe.webp 2000w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe-300x203.webp 300w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe-1024x693.webp 1024w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe-768x520.webp 768w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe-1536x1040.webp 1536w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/mulher-com-ansiedade-a-beber-cafe-18x12.webp 18w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/p><h2>Caffeine and Panic: What Happens in the Nervous System<\/h2><p>Coffee is part of the daily routine for millions of people, and for most, it is harmless. But if you have <strong><a href=\"https:\/\/neuropsiquiatria.pt\/en\/ataques-de-panico\/\">panic attacks<\/a><\/strong> or <strong><a href=\"https:\/\/neuropsiquiatria.pt\/en\/ansiedade\/\">anxiety<\/a><\/strong>, caffeine may be making the problem worse without you realising it.<\/p><h3>Adenosine blockade and adrenergic activation<\/h3><p>Caffeine works <strong>blocking<\/strong> a <a href=\"https:\/\/pt.wikipedia.org\/wiki\/Adenosina\"><strong>adenosine<\/strong><\/a> \u2014 the molecule that signals to the brain that it is in the <strong>time to slow down<\/strong>.<\/p><p>Without this \u201cbrake\u201d, the nervous system speeds up: the release of <strong>adrenaline<\/strong>, the heart rate rises and alertness increases. Every system in the body is affected.<\/p><p>A <strong>a feeling of being \u201con alert\u201d<\/strong> What we\u2019re looking for in caffeine \u2013 which makes us feel more focused and energetic \u2013 is, in essence, for the brain <strong>resembling a warning sign<\/strong>.<\/p><p>(Although that doesn\u2019t mean we should give up coffee!)<\/p><h3>Because it mimics the symptoms of a panic attack<\/h3><p>A racing heart, tremors, sweating, tightness in the chest, restlessness.<\/p><p><strong>Do you recognise this list?<\/strong><\/p><p>These symptoms, which are characteristic of a panic attack, are also the effects of a high dose of caffeine. All of these symptoms are <strong>answers<\/strong> of the body, which is getting ready <strong>physically and mentally<\/strong> just in case anything happens.<\/p><p>For a brain <strong>prone<\/strong> When it comes to anxiety and panic, this similarity is <strong>dangerous<\/strong>: <span style=\"text-decoration: underline;\">All it takes is to interpret the surge caused by the coffee as a warning sign for the crisis to begin<\/span>.<\/p><p><img decoding=\"async\" class=\"alignnone wp-image-7315\" src=\"https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/estudo-relacao-cafeina-com-ataques-de-panico.webp\" alt=\"Infogr\u00e1fico sobre a rela\u00e7\u00e3o entre cafe\u00edna e ataques de p\u00e2nico, mostrando que pessoas com perturba\u00e7\u00e3o de p\u00e2nico s\u00e3o mais sens\u00edveis \u00e0 cafe\u00edna, com refer\u00eancia ao estudo que utilizou 480 mg de cafe\u00edna (cerca de 5 caf\u00e9s) e ao maior risco de desencadear uma crise em indiv\u00edduos vulner\u00e1veis.\" width=\"700\" height=\"875\" srcset=\"https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/estudo-relacao-cafeina-com-ataques-de-panico.webp 1122w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/estudo-relacao-cafeina-com-ataques-de-panico-240x300.webp 240w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/estudo-relacao-cafeina-com-ataques-de-panico-819x1024.webp 819w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/estudo-relacao-cafeina-com-ataques-de-panico-768x960.webp 768w, https:\/\/neuropsiquiatria.pt\/wp-content\/uploads\/2026\/07\/estudo-relacao-cafeina-com-ataques-de-panico-10x12.webp 10w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p><h2>Why Are Anxious People More Sensitive to Caffeine?<\/h2><p>The research is clear on this point. In a <strong>baseline study<\/strong>, a high dose of caffeine (around 480 mg, the equivalent of 5 coffees) <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17823963\/\">triggered a panic attack in more than half of those with panic disorder \u2014 and in none of those without the condition<\/a>.<\/p><p>Who <strong>is already vulnerable<\/strong> It has the lowest \u201cthreshold\u201d: the same dose, which has no effect on someone else, can trigger a seizure.<\/p><h2>When Is It Too Much? Dosage and Individual Tolerance<\/h2><p>For a healthy adult, up to <strong>400 mg a day<\/strong> (around 4 cups of coffee) is generally considered safe. However, for people with anxiety or panic attacks, this amount is often <strong>too high<\/strong>.<\/p><p>There is no magic number: tolerance varies depending on genetics, weight, sleep and stress levels. <span style=\"text-decoration: underline;\">You won\u2019t find a better guide than your own body<\/span>.<\/p><div class=\"dica-valiosa\">If you are prone to panic or anxiety, try keeping a record for a week of everything you consume that contains caffeine and at what time, and note down the times when you experience the most anxiety or palpitations. The pattern is usually <strong>to catch the eye<\/strong> \u2014 and shows you, in concrete terms, what your personal limit is.<\/div><h2>Hidden Sources of Caffeine<\/h2><p>Coffee (in a cup or a glass) is the <strong>obvious suspect<\/strong>, but caffeine is hidden in many places:<\/p><ul><li>black tea and green tea (contain theine, <strong class=\"Yjhzub\" data-sfc-root=\"ep\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(230, 232, 240);\">exactly the same molecule\u00a0<!--TgQPHd||[]--><\/strong>caffeine \u2013 C\u2088H\u2081\u2080N\u2084O\u2082)<\/li><li>soft drinks and energy drinks<\/li><li>dark chocolate<\/li><li>certain painkillers and cold remedies<\/li><li>\u201cpre-workout\u201d supplements and weight-loss products<\/li><\/ul><p>All in all, <strong>it\u2019s easy to take too much<\/strong> which they think they are consuming.<\/p><h2>How to Lose Weight Without Suffering from Withdrawal Symptoms<\/h2><p>Suddenly cutting out caffeine causes <strong>headaches, irritability and fatigue<\/strong> \u2014 withdrawal symptoms which, ironically, mimic anxiety itself.<\/p><p>The solution is to reduce <strong>gradually<\/strong>: Cut down by one cup at a time, over the course of one to two weeks, and replace it with decaffeinated coffee or caffeine-free herbal teas. A slow and gradual reduction prevents your body from going into shock.<\/p><h2>Other Stimulants to Watch Out For<\/h2><p>Caffeine isn\u2019t the only one.<\/p><p>There are others <em>neurostimulants<\/em>, such as <strong>nicotine<\/strong>, certain nasal decongestants, and various substances used for \u201cenergy\u201d or focus that have a similar stimulating effect and <strong>may trigger crises<\/strong> in sensitive individuals. It\u2019s always worth reading the labels.<\/p><h2>Caffeine, Sleep and the Anxiety Cycle<\/h2><p>Here is the most underestimated vicious circle.<\/p><p>Caffeine stays in the body for a long time \u2014 <strong>half the dose is still circulating 5 to 6 hours later<\/strong>.<\/p><p>A cup of coffee in the late afternoon robs you of hours of deep sleep, and a poor night\u2019s sleep makes the brain more reactive the following day, <strong>reducing resistance to anxiety<\/strong> \u2014 which often leads to\u2026 drinking more coffee.<\/p><p>Taking care of your sleep is <strong>essential part<\/strong> to break this cycle.<\/p><div class=\"nota-importante\">If you notice your heart racing, tremors or restlessness shortly after having a coffee, don\u2019t ignore it. It could be a sign that your nervous system is <strong>particularly sensitive<\/strong> caffeine. Cutting down on caffeine is often one of the simplest and most effective changes for those who suffer from recurrent panic attacks.<\/div><div class=\"pontos-chave\"><h2>\ud83e\udde0 Key Points to Retain<\/h2><ul><li>Caffeine blocks adenosine and increases adrenaline, putting the body into a state of alertness similar to that caused by the presence of a physical threat.<\/li><li>Its effects \u2014 palpitations, tremors, restlessness \u2014 mimic the symptoms of a panic attack.<\/li><li>High doses (over 480 mg) triggered panic attacks in more than half of those with panic disorder, but in none of the healthy individuals.<\/li><li>Up to 400 mg a day is safe for most people, but it is usually too much for those suffering from anxiety \u2014 tolerance varies from person to person.<\/li><li>There is caffeine hidden in tea, fizzy drinks, chocolate and medicines; cut down gradually to avoid withdrawal symptoms.<\/li><li>When misused, caffeine disrupts sleep and fuels anxiety \u2014 making sure you get enough rest helps to break the cycle.<\/li><\/ul><\/div><h2><span style=\"text-decoration: underline;\">FAQs \u2013 Frequently Asked Questions<\/span><\/h2><h3>Do I have to give up coffee completely if I suffer from panic attacks or anxiety?<\/h3><p>Not necessarily. Many people have one or two cups in the morning without any problems. The aim is to find your limit and avoid caffeine in the afternoon and evening. For some people, particularly those who experience frequent episodes, complete abstinence brings greater stability.<\/p><h3>How long does caffeine stay in the body?<\/h3><p>The so-called \u201chalf-life\u201d of coffee is around 5 to 6 hours: half of it is still active during this period, and it can take 10 hours or more for it to disappear completely. For this reason, a cup of coffee at 4 pm can affect your sleep that very night.<\/p><h3>Is decaffeinated coffee safe?<\/h3><p>Generally speaking, yes. Decaffeinated coffee contains only trace amounts of caffeine \u2014 a tiny fraction of that found in a normal cup of coffee. It\u2019s a good way to enjoy the ritual without the stimulating effect.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Resposta curta: em certas pessoas, a cafe\u00edna pode causar sintomas id\u00eanticos aos de um ataque de p\u00e2nico. A acelera\u00e7\u00e3o do sistema nervoso, do cora\u00e7\u00e3o, e os tremores que pode causar s\u00e3o id\u00eanticos aos de uma crise. Em pessoas mais sens\u00edveis \u00e0 cafe\u00edna, doses elevadas devem ser evitadas. Cafe\u00edna e P\u00e2nico: O Que Acontece no Sistema [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7311,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[45],"class_list":["post-7190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geral","tag-novo-layout"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.9 - aioseo.com -->\n\t<meta name=\"description\" content=\"Resposta curta: em certas pessoas, a cafe\u00edna pode causar sintomas id\u00eanticos aos de um ataque de p\u00e2nico. A acelera\u00e7\u00e3o do sistema nervoso, do cora\u00e7\u00e3o, e os tremores que pode causar s\u00e3o id\u00eanticos aos de uma crise. 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