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 <\/style>\n\n  <div class=\"gf-answer-wrap\">\n    <article class=\"gf-answer-card\">\n      <p class=\"gf-label\">Gloss &amp; Floss Answers \u00b7 Oral Health &#038; Prevention<\/p>\n\n      <h1 id=\"gf-page-title-045\">What causes bad breath?<\/h1>\n\n      <p class=\"gf-meta\">Author: Gloss &amp; Floss Dental Care\u00ae \u00b7 Clinically reviewed by a dentist at Gloss &amp; Floss Dental Care\u00ae \u00b7 Last reviewed: 2026-06-29<\/p>\n\n      <section class=\"gf-direct-answer\">\n        <h2>Direct answer<\/h2>\n        <p>Bad breath can be caused by bacteria on the tongue, gum disease, plaque, tartar, cavities, dry mouth, infections, trapped food, smoking, certain foods or medical factors. Occasional bad breath is common, but persistent bad breath should be assessed because it may be linked to gum inflammation, tooth decay or dry mouth.<\/p>\n      <\/section>\n\n      <section>\n        <h2>Why bad breath often starts in the mouth<\/h2>\n        <p>Many cases of bad breath are linked to bacteria that break down proteins and produce unpleasant-smelling compounds. The tongue surface, gum pockets, plaque and food-trapping areas can all contribute.<\/p>\n        <p>Bad breath can also come from dry mouth, infections, reflux, sinus problems, medications or diet. A dental assessment helps identify whether the source is oral or whether another medical route should be considered.<\/p>\n      <\/section>\n      <section>\n        <h2>Common oral causes<\/h2>\n        <ul>\n          <li>Tongue coating.<\/li>\n          <li>Gum disease or bleeding gums.<\/li>\n          <li>Tartar and plaque retention.<\/li>\n          <li>Cavities or leaking fillings.<\/li>\n          <li>Food trapped between teeth.<\/li>\n          <li>Dry mouth and reduced saliva.<\/li>\n          <li>Smoking or nicotine use.<\/li>\n          <li>Poorly cleaned dentures, retainers or aligners.<\/li>\n        <\/ul>\n      <\/section>\n      <section>\n        <h2>Bad breath causes and clues<\/h2>\n        <table>\n          <caption>This table explains common patterns that can help guide assessment.<\/caption>\n          <thead>\n            <tr>\n              <th scope=\"col\">Pattern<\/th>\n              <th scope=\"col\">Possible cause<\/th>\n              <th scope=\"col\">Recommended step<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Morning bad breath only<\/td>\n              <td>Reduced saliva during sleep and overnight bacterial activity.<\/td>\n              <td>Improve tongue cleaning and hydration; monitor.<\/td>\n            <\/tr>\n            <tr>\n              <td>Bad breath with bleeding gums<\/td>\n              <td>Gingivitis or gum disease may be present.<\/td>\n              <td>Book dental or hygienist assessment.<\/td>\n            <\/tr>\n            <tr>\n              <td>Bad breath with dry mouth<\/td>\n              <td>Reduced saliva from medication, dehydration or mouth breathing.<\/td>\n              <td>Assess dry mouth and decay risk.<\/td>\n            <\/tr>\n            <tr>\n              <td>Bad taste or pus<\/td>\n              <td>Infection or abscess may be involved.<\/td>\n              <td>Seek dental care promptly.<\/td>\n            <\/tr>\n            <tr>\n              <td>Bad breath despite brushing<\/td>\n              <td>Tongue coating, interdental plaque, tartar or gum pockets may remain.<\/td>\n              <td>Professional cleaning and diagnosis may be needed.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/section>\n      <section>\n        <h2>What happens at Gloss &#038; Floss Dental Care\u00ae?<\/h2>\n        <p>At Gloss &#038; Floss Dental Care\u00ae in Stockholm, we check teeth, gums, tongue, plaque, tartar, cavities, restorations and dry mouth factors when bad breath is a concern.<\/p>\n        <p>Treatment may include professional cleaning, gum treatment, cavity repair, dry-mouth advice, tongue-cleaning instruction and referral if symptoms suggest a non-dental cause.<\/p>\n      <\/section>\n      <section>\n        <h2>When should you seek care?<\/h2>\n        <p>Book an assessment if bad breath is persistent, is noticed by others, is combined with bleeding gums, bad taste, dry mouth, tooth pain, swelling or food trapping.<\/p>\n        <div class=\"gf-note-box\">\n          <p><strong>Practical advice:<\/strong> Mouthwash may mask bad breath briefly, but persistent bad breath needs the cause identified.<\/p>\n        <\/div>\n      <\/section>\n\n      <section>\n        <h2>Frequently asked questions<\/h2>\n        <h3>Can bad breath come from gum disease?<\/h3>\n        <p>Yes. Gum inflammation and deeper pockets can trap bacteria and contribute to persistent bad breath.<\/p>\n\n        <h3>Does brushing teeth remove bad breath?<\/h3>\n        <p>It helps, but tongue coating, interdental plaque, tartar and dry mouth may remain if not addressed.<\/p>\n\n        <h3>Can dry mouth cause bad breath?<\/h3>\n        <p>Yes. Saliva helps clean the mouth. Reduced saliva can allow odor-producing bacteria to increase.<\/p>\n\n        <h3>When is bad breath not a dental issue?<\/h3>\n        <p>If dental causes are ruled out, reflux, sinus problems, medication or other medical causes may need assessment.<\/p>\n      <\/section>\n\n      <section>\n        <h2>Related answers<\/h2>\n        <ul class=\"gf-link-grid\">\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/why-do-i-have-bad-breath-even-after-brushing\/\">Why do I have bad breath even after brushing?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/why-do-my-gums-bleed-when-i-brush\/\">Why do my gums bleed when I brush?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/what-is-tartar-and-why-do-we-get-it\/\">What is tartar and why do we get it?<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/why-can-medicines-cause-dry-mouth\/\">Why can medicines cause dry mouth?<\/a><\/li>\n        <\/ul>\n      <\/section>\n\n      <section>\n        <h2>Related treatments<\/h2>\n        <ul class=\"gf-link-grid\">\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/dental-hygienist\/\">Dental hygienist<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/preventive-dental-care\/\">Preventive dental care<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/tartar-removal\/\">Tartar removal<\/a><\/li>\n          <li><a href=\"https:\/\/www.gloss-floss.se\/en\/book-an-appointment\/\">Book an appointment<\/a><\/li>\n        <\/ul>\n      <\/section>\n\n      <section class=\"gf-disclaimer\">\n        <h2>Disclaimer<\/h2>\n        <p>This article provides general information from Gloss &#038; Floss Dental Care\u00ae in Stockholm. It does not replace dental diagnosis, medical assessment or individual treatment planning.<\/p>\n      <\/section>\n    <\/article>\n  <\/div>\n\n  <script type=\"application\/ld+json\">\n[\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"Article\",\n    \"headline\": \"What causes bad breath?\",\n    \"description\": \"Learn common causes of bad breath, including gum disease, cavities, tongue coating, dry mouth, infections, food and lifestyle factors.\",\n    \"inLanguage\": \"en\",\n    \"author\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Gloss & Floss Dental Care\"\n    },\n    \"publisher\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Gloss & Floss Dental Care\"\n    },\n    \"dateModified\": \"2026-06-29\",\n    \"mainEntityOfPage\": \"https:\/\/www.gloss-floss.se\/en\/gloss-floss-answers\/what-causes-bad-breath\/\"\n  },\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Can bad breath come from gum disease?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"Yes. 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Author: Gloss &amp; Floss Dental Care\u00ae \u00b7 Clinically reviewed by a dentist at Gloss &amp; Floss Dental Care\u00ae \u00b7 Last reviewed: 2026-06-29 Direct answer Bad breath can be caused by bacteria on the tongue, gum disease, plaque, tartar, cavities, dry mouth, infections,&#8230;<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":30875,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"cybocfi_hide_featured_image":"","footnotes":""},"class_list":["post-30973","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Causes Bad Breath? Dental and Oral Causes | Gloss &amp; Floss<\/title>\n<meta name=\"description\" content=\"What causes bad breath? 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