It originates from the brainstem and travels down through the neck and chest, where it branches out and connects the brain with important internal organs, including the heart, lungs, and digestive tract, playing a central role in, among other things, heart rate, breathing, and digestion.<\/p>\n\n\n\n
It is part of the parasympathetic nervous system, which is active when the body is at rest and recovering.<\/p>\n\n\n\n At the same time, Heart Rate Variability (HRV) is increasingly being used as a measure of vagus tonus and autonomic balance. High HRV is generally associated with better stress regulation, greater physiological flexibility, and lower inflammation.<\/p>\n\n\n\n The interesting part is that several studies are now investigating whether molecular hydrogen can influence these very systems.<\/p>\n\n\n\n A study published by K. Mizuno showed that the intake of hydrogen-rich water over four weeks was associated with improvements in mood, anxiety, and autonomic nerve function in adult participants. The researchers suggested that hydrogen may potentially affect the central nervous system and autonomic regulation.<\/p>\n\n\n\n Other studies have investigated hydrogen and HRV, the variation between heartbeats, which is closely linked to vagus activity.<\/p>\n\n\n\n A study from 2021 found that acute intake of hydrogen-rich water could stimulate autonomic cardiac regulation in healthy women.<\/p>\n\n\n\n Recent research from 2025\u20132026 is also investigating hydrogen inhalation and the autonomic nervous system. The results are still mixed, but researchers point out that hydrogen can influence autonomic regulation, recovery, and neurovascular response.<\/p>\n\n\n\n In addition, the connection between the gut, microbiome, and the vagus nerve has become a major area of research. Gut bacteria naturally produce various signalling substances and gases, including small amounts of molecular hydrogen.<\/p>\n\n\n\n Researchers are now investigating how signalling between the microbiome and the vagus nerve affects inflammation, mood, and brain function.<\/p>\n\n\n\n Molecular hydrogen is particularly interesting in this context because research shows that hydrogen can:<\/p>\n\n\n\n In fact, oxidative stress and chronic inflammation are areas that are also closely linked to the function of the vagus nerve.<\/p>\n\n\n\n It is important to emphasize that the research is still developing. We do not yet have large clinical studies documenting that molecular hydrogen directly \"activates the vagus nerve.\" However, there is growing evidence that hydrogen affects several of the biological systems regulated by the vagus nerve, particularly inflammation, oxidative stress, autonomic balance, and recovery.<\/p>\n\n\n\n This is perhaps precisely why many people describe experiencing greater calmness, better sleep, recovery, and mental balance when using hydrogen. Not necessarily because hydrogen \"turns off disease,\" but because it appears to support the body's own ability to regulate itself.<\/p>","protected":false},"excerpt":{"rendered":" Interest in the vagus nerve has exploded in recent years because research shows that the vagus nerve plays a central role in the body's regulation of inflammation, stress response, recovery, and biological balance.<\/p>","protected":false},"author":1,"featured_media":53101,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[284],"tags":[],"ambassador_emne":[],"class_list":["post-53102","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-forskning"],"acf":[],"taxonomy_info":{"category":[{"value":284,"label":"Forskning"}]},"featured_image_src_large":["https:\/\/iwater.dk\/wp-content\/uploads\/vagus-parasympatisk-mindre.avif",1024,768,false],"author_info":{"display_name":"webto","author_link":"https:\/\/iwater.dk\/en\/author\/webto\/"},"comment_info":0,"category_info":[{"term_id":284,"name":"Forskning","slug":"forskning","term_group":0,"term_taxonomy_id":284,"taxonomy":"category","description":"Forskning i molekyl\u00e6r hydrogen\r\nL\u00e6s den nyeste forskning om hydrogeninhalation og hydrogenrigt vand. Bliv klogere p\u00e5 forskning om sundhed, velv\u00e6re og optimeret energi.\u00a0I dag bliver der forsket intensivt i hydrogens forbedrende egenskaber p\u00e5 en lang r\u00e6kke sygdomme og helbredsm\u00e6ssige udfordringer. Siden 2007 har der v\u00e6ret stigende interesse for brugen af molekyl\u00e6r hydrogen som terapi til fysiske og psykiske udfordringer. Hydrogen viser hele tiden nye sider af sig selv, s\u00e5 mulighed for dets brug udvider sig.\r\n\r\nForskningens utrolige opdagelser\r\nI 1975 blev der forsket f\u00f8rste gange i hydrogens muligt effekt p\u00e5 menneskets sundhed. Forskerne fandt ud af, at hydrogenterapi var effektivt i forhold til at reducere kr\u00e6fttumorer hos mus. Efter en lang pause, kom der i 2007 kom der igen ny forskning. Fors\u00f8get havde banebrydende resultater, der virkelig satte gang i mulighederne for hydrogenterapi som behandlingsmetode.\r\nEt japansk forskningsstudie viste, at molekyl\u00e6r hydrogen kunne bek\u00e6mpe frie radikaler i cellerne og derfor ogs\u00e5 reducere oxidativ stress. Siden da har \u00a0der har v\u00e6ret massiv interesse. I dag findes er der mere en 1500 forskningsartikler p\u00e5 omr\u00e5det. Interessen er konstant stigende.\r\nNy forskning indikerer blandt andet, at molekyl\u00e6r hydrogen stimulerer vores parasympatiske nervesystem og derudover ogs\u00e5 h\u00e6mmer det sympatiske nervesystem. Det betyder alts\u00e5, at det kan hj\u00e6lpe ogs\u00e5 med at slappe af og bringe niveauet af stress ned. Molekyl\u00e6r hydrogen er nemlig ekstraordin\u00e6r, fordi den kan gennemtr\u00e6nge blod-hjernebarrieren. Da hydrogen er den mindste og kraftigste antioxidant. Derfor kan den tr\u00e6nge ind i mitokondrierne og reparere steder, hvor andre antioxidanter ikke kan n\u00e5 ind.","parent":0,"count":20,"filter":"raw","term_order":"0","cat_ID":284,"category_count":20,"category_description":"Forskning i molekyl\u00e6r hydrogen\r\nL\u00e6s den nyeste forskning om hydrogeninhalation og hydrogenrigt vand. Bliv klogere p\u00e5 forskning om sundhed, velv\u00e6re og optimeret energi.\u00a0I dag bliver der forsket intensivt i hydrogens forbedrende egenskaber p\u00e5 en lang r\u00e6kke sygdomme og helbredsm\u00e6ssige udfordringer. Siden 2007 har der v\u00e6ret stigende interesse for brugen af molekyl\u00e6r hydrogen som terapi til fysiske og psykiske udfordringer. Hydrogen viser hele tiden nye sider af sig selv, s\u00e5 mulighed for dets brug udvider sig.\r\n\r\nForskningens utrolige opdagelser\r\nI 1975 blev der forsket f\u00f8rste gange i hydrogens muligt effekt p\u00e5 menneskets sundhed. Forskerne fandt ud af, at hydrogenterapi var effektivt i forhold til at reducere kr\u00e6fttumorer hos mus. Efter en lang pause, kom der i 2007 kom der igen ny forskning. Fors\u00f8get havde banebrydende resultater, der virkelig satte gang i mulighederne for hydrogenterapi som behandlingsmetode.\r\nEt japansk forskningsstudie viste, at molekyl\u00e6r hydrogen kunne bek\u00e6mpe frie radikaler i cellerne og derfor ogs\u00e5 reducere oxidativ stress. Siden da har \u00a0der har v\u00e6ret massiv interesse. I dag findes er der mere en 1500 forskningsartikler p\u00e5 omr\u00e5det. Interessen er konstant stigende.\r\nNy forskning indikerer blandt andet, at molekyl\u00e6r hydrogen stimulerer vores parasympatiske nervesystem og derudover ogs\u00e5 h\u00e6mmer det sympatiske nervesystem. Det betyder alts\u00e5, at det kan hj\u00e6lpe ogs\u00e5 med at slappe af og bringe niveauet af stress ned. Molekyl\u00e6r hydrogen er nemlig ekstraordin\u00e6r, fordi den kan gennemtr\u00e6nge blod-hjernebarrieren. Da hydrogen er den mindste og kraftigste antioxidant. Derfor kan den tr\u00e6nge ind i mitokondrierne og reparere steder, hvor andre antioxidanter ikke kan n\u00e5 ind.","cat_name":"Forskning","category_nicename":"forskning","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/posts\/53102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/comments?post=53102"}],"version-history":[{"count":0,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/posts\/53102\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/media\/53101"}],"wp:attachment":[{"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/media?parent=53102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/categories?post=53102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/tags?post=53102"},{"taxonomy":"ambassador_emne","embeddable":true,"href":"https:\/\/iwater.dk\/en\/wp-json\/wp\/v2\/ambassador_emne?post=53102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"\/](\"https:\/\/iwater.dk\/wp-content\/uploads\/vagus-nerven.avif\")
<\/figure>\n\n\n\nHeart Rate Variability (HRV)<\/h2>\n\n\n\n
Hydrogen and the autonomic nervous system<\/h2>\n\n\n\n
\n\n
Growing evidence<\/h2>\n\n\n\n