An Unspoken Concern: Is 90% of Severe Bad Breath Really Caused by the Gums?

Severe bad breath, or halitosis, is not merely an issue of oral hygiene. Most cases occur due to volatile sulfur compounds, which are produced when anaerobic bacterium species in the oral cavity break down protein. The preferred habitats of these bacteria are precisely the gums and the tongue. Especially when chronic inflammation is present, such as gingivitis or periodontitis, the gum tissue is damaged and pools with blood and exudate, creating an optimal environment for bacteria to multiply. The explanation in the Donguibogam that stomach heat affects the gums aligns remarkably well with modern medicine's understanding of gum inflammation. Xerostomia is also one of the major causes of bad breath. Saliva plays an essential role in washing the oral cavity, suppressing bacterial proliferation, and regulating pH. When salivary secretion decreases, bacteria surge and the production of volatile sulfur compounds accelerates. Stress, medications such as an antihistamine or antidepressant, autoimmune diseases such as Sjögren syndrome, and mouth breathing can all induce xerostomia. The phenomena explained by our ancestors as fluid deficiency and kidney deficiency can be interpreted in a similar context. Additionally, bad breath can be a signal of systemic disease. A scent of acetone may emanate from patients with diabetes, an ammonia odor from patients with renal failure, and a fishy smell from patients with liver disease. Severe odor is also produced when gastric acid reflux occurs due to reflux esophagitis, or when food debris and bacteria aggregate and harden like stones in the small crypts of the tonsil, forming a tonsillolith. All of these connect with the phenomena that manifest when internal heat or balance is disrupted. Modern medicine also emphasizes that thoroughly examining whole-body health, as well as gum health, is the true shortcut to resolving bad breath.