Why your gums bleed after you brush your teeth
from Men's Health via Fox News
If you spit pink every time you brush your teeth, you probably have gum disease. Mild gum disease — or gingivitis — is the chronic buildup of bacteria-laden plaque and tarter on your teeth that only a dentist can remove. The longer plaque stays there, the more inflammation and swelling it'll cause around your gums. The simple act of brushing your teeth irritates the swollen gums, and makes them bleed.
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