If we neglect brushing our teeth, bacteria can build up in our mouth and be inhaled into our lungs. This can lead to serious respiratory infections, such as pneumonia, bronchitis, and chronic obstructive pulmonary disease (COPD). Bacteria from the mouth can travel to the lungs, especially in people with weakened immune systems or those who suffer from chronic lung diseases. Keeping our mouth clean can help reduce the chances of bacteria spreading to our respiratory system.
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