{"id":1326,"date":"2020-06-22T15:05:44","date_gmt":"2020-06-22T15:05:44","guid":{"rendered":"http:\/\/horizon.peachpuff-wolverine-566518.hostingersite.com\/?p=1326"},"modified":"2020-06-22T15:05:56","modified_gmt":"2020-06-22T15:05:56","slug":"what-anxiety-does-to-our-breathing","status":"publish","type":"post","link":"https:\/\/scienceblog.com\/horizon\/1326\/what-anxiety-does-to-our-breathing\/","title":{"rendered":"What anxiety does to our breathing"},"content":{"rendered":"<div class=\"field field-name-field-header field-type-text-long field-label-hidden\">\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<p class=\"selectionShareable\"><strong>Stressful situations can cause anxiety, our body\u2019s natural response to stress. But feelings of apprehension can also be accompanied by physical effects such as rapid breathing, increased heart rate and nausea. How our brain perceives these physical changes \u2013 in particular, breathing \u2013 could be key to better understanding anxiety disorders and treating them.\u00a0<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"field field-name-body field-type-text-with-summary field-label-hidden\">\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<p class=\"selectionShareable\">Anxiety disorders are the most common mental health problem in Europe, affecting\u00a0<a href=\"https:\/\/www.oecd-ilibrary.org\/docserver\/health_glance_eur-2018-4-en.pdf?expires=1591375847&amp;id=id&amp;accname=guest&amp;checksum=16D75DB6DF431D34DBA114EE960ACC5C\" target=\"_blank\" rel=\"noopener noreferrer\">about 25 million people across the region<\/a>.<\/p>\n<p class=\"selectionShareable\">Whereas anxiety is a normal reaction to difficult times, enabling us to take precautions, people with disorders can have high levels of dread that come out of nowhere and affect their daily life.<\/p>\n<p class=\"selectionShareable\">\u2018Having an anxiety disorder is when anxiety levels are both elevated and are causing problems,\u2019 said Dr Olivia Faull, a neuroscientist at the University of Zurich in Switzerland. \u2018It can stop (people) from doing things that they would like to do or things that they need to do like going out to the shops or visiting friends.\u2019<\/p>\n<p class=\"selectionShareable\">Although existing treatments can help, they aren\u2019t ideal for everyone. Drugs such as serotonin reuptake inhibitors can alleviate symptoms but may also be accompanied by negative side effects. Exercise is recommended since\u00a0<a href=\"https:\/\/www.health.harvard.edu\/blog\/can-exercise-help-treat-anxiety-2019102418096\" target=\"_blank\" rel=\"noopener noreferrer\">it can activate the frontal part of the brain which helps control our reactions to real or imagined threats.\u00a0<\/a>\u00a0But it\u2019s not appropriate for people with certain types of anxiety. \u2018It might be far too much for someone who has severe social anxiety,\u2019 said Dr Faull. \u2018They don&#8217;t want to go to an exercise class or have a personal trainer.\u2019<\/p>\n<p class=\"selectionShareable\">New treatments for anxiety are therefore needed and could be developed using a new approach. Dr Faull and other researchers are now investigating the link between anxiety and our ability to perceive what\u2019s going on inside our body, called interoception.<\/p>\n<p class=\"selectionShareable\">\u2018It\u2019s a novel research domain and we don&#8217;t know much about it yet,\u2019 said Dr Omer Van den Bergh, a health psychology researcher at the University of Leuven in Belgium.<\/p>\n<p class=\"selectionShareable\"><strong>Signals<\/strong><\/p>\n<p class=\"selectionShareable\">Interoception involves sensing signals from internal organs, such as changes in heart rate or how hard you\u2019re breathing. When running, for example, most people are aware that their heart is beating faster and that it\u2019s more difficult to breathe. Feelings of hunger also stem from gauging sensations in the gut.<\/p>\n<p class=\"selectionShareable\">Research, however, suggests that people with high anxiety levels may not accurately perceive what\u2019s going on inside their body. Early work on this found\u00a0<a href=\"https:\/\/europepmc.org\/article\/med\/3829747\" target=\"_blank\" rel=\"noopener noreferrer\">anxiety disorder sufferers to be less sensitive to changes in their breathing<\/a>\u00a0compared to healthy individuals.\u00a0<a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC5062102\/\" target=\"_blank\" rel=\"noopener noreferrer\">A recent study<\/a>\u00a0found that there seem to be differences in how anxious individuals perceive different bodily signals. Heart signals were typically gauged more accurately compared to breathing.<\/p>\n<p class=\"selectionShareable\">Dysfunctional interoception is thought to be both a cause and effect of anxiety. For example, an anxious person may not notice changes in breathing until they become extreme and they suddenly feel lightheaded. The physical symptoms then add to their initial worry and make them even more anxious. \u2018If you aren&#8217;t able to dissociate the symptoms and your thoughts as to what&#8217;s making you anxious, they can just feed off each other,\u2019 said Dr Faull.<\/p>\n<p class=\"selectionShareable\">Some anxiety sufferers may also misinterpret interoceptive signals from their body. Dr Van den Bergh and his colleagues are particularly interested in how health anxiety and somatic symptom disorders, which involve physical symptoms that can\u2019t be medically explained, affect a person\u2019s perception of their internal state.<\/p>\n<p class=\"selectionShareable\">Someone may be constantly scared that they have a brain tumour, for example. If they become stressed and their breathing and heart rate change, they may wrongly interpret the physical symptoms. \u2018They might receive evidence for a brain tumour even if there is very little discriminative input from the body,\u2019 said Dr Van den Bergh.<\/p>\n<p class=\"selectionShareable\">Mistaking a benign symptom for a sign of disease has advantages. If you\u2019re feeling breathless during exercise, for example, your brain has to decide if it\u2019s simply a normal side effect or if you are ill. Assuming you are ill may be a false alarm but it ensures that you don\u2019t miss a threat that could kill you.<\/p>\n<p class=\"selectionShareable\">\u2018Better safe than sorry is a very important survival mechanism,\u2019 said Dr Van den Bergh. \u2018Some people are more tuned than others to apply this strategy depending on how you grew up and adverse experiences in childhood, for example.\u2019<\/p>\n<div class=\"quote-view quotesBlock quote_horizontal\">\n<blockquote>\n<p class=\"selectionShareable\">\u2018If you are chronically concerned about having somatic symptoms, you put your brain in a state of readiness to perceive the things you are afraid of.\u2019<\/p>\n<p class=\"selectionShareable\">Dr Omer Van den Bergh, University of Leuven, Belgium<\/p>\n<\/blockquote>\n<\/div>\n<p class=\"selectionShareable\">Dr Van den Bergh and his colleagues hypothesise that anxious people and particularly those with somatic disorders are guided by their fears rather than actual symptoms. They\u00a0<a href=\"https:\/\/journals.sagepub.com\/doi\/abs\/10.1177\/0956797613519110\" target=\"_blank\" rel=\"noopener noreferrer\">developed a paradigm<\/a>\u00a0to test their theory which was used in\u00a0<a href=\"https:\/\/cordis.europa.eu\/project\/id\/653750\" target=\"_blank\" rel=\"noopener noreferrer\">a project called CIP<\/a>\u00a0(see box)<\/p>\n<p class=\"selectionShareable\">\u2018If you are chronically concerned about having somatic symptoms, you put your brain in a state of readiness to perceive the things you are afraid of,\u2019 said Dr Van den Bergh.<\/p>\n<p class=\"selectionShareable\">A better understanding of how interoception differs in anxious people could lead to new treatments. Dr Van den Bergh thinks that anxious people could be trained in interoceptive differentiation while adopting an attitude to \u2018let information come\u2019 rather than anxiously anticipate a threat. \u2018We believe that this might be a new route,\u2019 he said.<\/p>\n<p class=\"selectionShareable\"><strong>Breathing<\/strong><\/p>\n<p class=\"selectionShareable\">Breathing tests themselves could also give more insight into how sensitive anxiety sufferers are to respiratory signals. Dr Faull and her colleagues are investigating how anxiety changes the brain\u2019s perception of interoceptive information from breathing as part of the\u00a0<a href=\"https:\/\/cordis.europa.eu\/project\/id\/793580\">ILBAB project<\/a>. As a first step, they are examining healthy volunteers who experience either mild or moderate anxiety to establish if there are any differences. In a follow-up project, Dr Faull wants to tackle clinical anxiety.<\/p>\n<p class=\"selectionShareable\">In one experiment, thirty people from each anxiety level group were asked to inhale though a tube and report whether they thought a resistance had been added and if so by how much. They were also asked how confident they were about their answer. \u2018It&#8217;s like your ability to judge how well you did in an exam before you got the results back,\u2019 said Dr Faull.<\/p>\n<p class=\"selectionShareable\">Preliminary results suggest that people with higher levels of anxiety are slightly less sensitive to changes in breathing, which was expected from previous work using different techniques. Their early findings also suggest that higher anxiety impairs awareness of interoception or what Dr Faull refers to as insight.<\/p>\n<p class=\"selectionShareable\">A\u00a0<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0006322318300295\" target=\"_blank\" rel=\"noopener noreferrer\">different study<\/a>, however, has shown that anxiety has no effect on insight, but it involved a visual task, which requires taking in signals from one\u2019s environment rather than inside the body. Dr Faull thinks this makes sense given an anxious person could be capable of helping a friend navigate a crisis, but may not be logical about a personal problem.<\/p>\n<p class=\"selectionShareable\">\u2018When it turns to themselves, and the signals are from themself, then that insight is impaired,\u2019 she said.<\/p>\n<p class=\"selectionShareable\">The team\u2019s ultimate goal is to come up with targeted treatments involving breathing exercises for a range of psychiatric disorders including clinical anxiety and depression based on their findings. But if patients have a better understanding of the link between anxiety and perception of breathing it could help too.<\/p>\n<p class=\"selectionShareable\">Once they have more concrete results, Dr Faull and her colleagues plan to talk to the public about them as it could help patients to better manage their anxiety. Recognising how anxiety changes insight could be particularly helpful.<\/p>\n<p class=\"selectionShareable\">\u2018When (someone) is in a very big state of anxiety, they need to remember that their insight is probably quite compromised,\u2019 said Dr Faull. \u2018That&#8217;s why it maybe feels so overwhelming.\u2019<\/p>\n<p class=\"selectionShareable\"><em>The research in this article was funded by the EU. If you liked this article, please consider sharing it on social media.<\/em><\/p>\n<div class=\"moreInfoBlock\">\n<h3>Rating the effort of breathing<\/h3>\n<p class=\"selectionShareable\">In a series of tests to study anxiety and breathing, researchers manipulated participants\u2019 breath by making them inhale from a breathing system where resistance is applied, changing the effort it takes to breathe. In one experiment with healthy individuals, the resistances were presented randomly and participants rated them based on several factors such as intensity and unpleasantness. In another task, the same resistances were categorised into two groups, A or B, based on their intensity. The lowest four resistances formed category A while the highest four were part of category B. The participants were told the category of a stimulus when it was presented and asked to rate it again.<\/p>\n<p class=\"selectionShareable\">The team found that there were differences in how the stimuli were perceived when presented without and with a category. Participants would find stimuli from the same category to be more similar than when they were presented uncategorised. Differences between stimuli from different categories became more pronounced.<\/p>\n<p class=\"selectionShareable\">The idea behind the tests was that using categories, such as low and high intensity, creates expectations and can prime a person to anticipate a certain type of breathing stimulus. This priming effect is similar to how the fears of an anxious person can influence their interoception. The effect of categorisation is expected to be more extreme in anxious people since they place more importance on their expectations.<\/p>\n<p class=\"selectionShareable\">However,\u00a0<a href=\"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpsyg.2015.00732\/full\">one study<\/a>\u00a0revealed that the relationship isn\u2019t that simple. The team found that anxious individuals only misinterpreted stimuli that were at the boundary of two categories and therefore more ambiguous. Only a stimulus that is unclear may therefore be perceived as a threat. It shows that interoceptive abilities in anxious people are flexible and depend on the stimulus, says Dr Van den Bergh.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Stressful situations can cause anxiety, our body\u2019s natural response to stress. But feelings of apprehension can also be accompanied by physical effects such as rapid breathing, increased heart rate and nausea. How our brain perceives these physical changes \u2013 in particular, breathing \u2013 could be key to better understanding anxiety disorders and treating them.\u00a0 Anxiety &#8230; <a title=\"What anxiety does to our breathing\" class=\"read-more\" href=\"https:\/\/scienceblog.com\/horizon\/1326\/what-anxiety-does-to-our-breathing\/\" aria-label=\"Read more about What anxiety does to our breathing\">Read more<\/a><\/p>\n","protected":false},"author":318,"featured_media":1327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"generate_page_header":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[12],"tags":[],"class_list":["post-1326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What anxiety does to our breathing - Horizon Magazine Blog<\/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:\/\/scienceblog.com\/horizon\/1326\/what-anxiety-does-to-our-breathing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What anxiety does to our breathing\" \/>\n<meta property=\"og:description\" content=\"Stressful situations can cause anxiety, our body\u2019s natural response to stress. But feelings of apprehension can also be accompanied by physical effects such as rapid breathing, increased heart rate and nausea. How our brain perceives these physical changes \u2013 in particular, breathing \u2013 could be key to better understanding anxiety disorders and treating them.\u00a0 Anxiety ... 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But feelings of apprehension can also be accompanied by physical effects such as rapid breathing, increased heart rate and nausea. How our brain perceives these physical changes \u2013 in particular, breathing \u2013 could be key to better understanding anxiety disorders and treating them.\u00a0 Anxiety ... 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Hippocrates described them as \u2018masses of terrors,\u2019 while French physicians in the 18th century labelled them as \u2018vapours\u2019 and \u2018melancholia.\u2019\u2026","rel":"","context":"In &quot;Health&quot;","block_context":{"text":"Health","link":"https:\/\/scienceblog.com\/horizon\/category\/health\/"},"img":{"alt_text":"Researchers are using virtual reality to test participants\u2019 reactions to threats such as dogs or falling rocks to understand more about the brain mechanisms linked to anxiety. 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