Bad breath is a problem that socially embarrasses many people. It can be caused by anything from poor oral hygiene to internal organ disorders. The main causes are:
Poor oral hygiene: The most important cause of bad breath is food debris stuck between the teeth and gums. When bacteria break them down, bad-smelling gases are produced. Not cleaning the tongue properly also causes bacteria to grow.
Dry Mouth: Saliva is essential for cleaning the mouth and removing bacteria. Saliva production decreases during sleep and when you go without drinking water for a long time. This leads to dry mouth and the growth of odor-causing bacteria.
Digestive problems and acid reflux: Bad breath is common in people with problems such as indigestion, gas, and stomach acid reflux (GERD). Stomach infections (H. pylori) and food odors can also cause this.
Sinusitis and lung infections: When you have a chronic cold, sinusitis, or tonsillitis, the fluids from your nose and throat can mix with bacteria, causing bad breath.
Diet and habits: The consumption of onions, garlic, and some spices can reach your lungs through your bloodstream and cause bad breath. In addition, the use of tobacco products can cause dry mouth and gum disease, which can lead to severe bad breath.