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Why do my gums bleed?

Written by Dr. Shalu, BDS · Last updated September 2026

Gums bleed when the tissue around your teeth is inflamed. In almost every everyday case, that inflammation is gingivitis — the earliest stage of gum disease — caused by plaque sitting along the gumline.

Plaque is a sticky film of bacteria. If it isn't cleaned off, the gums become red, puffy, and bleed when you brush or floss. Bleeding is a sign the gums need better cleaning, not a sign you should stop brushing that area.

What helps

  • Brush twice a day with a soft brush, angling toward the gumline
  • Clean between your teeth daily — bleeding often improves within 1–2 weeks of consistent flossing
  • Get a professional cleaning to remove tartar your brush cannot

When it's more than gingivitis

If bleeding is heavy, lasts more than two weeks of good cleaning, or comes with loose teeth, receding gums, or bad breath, see a dentist. Pregnancy, some medicines, and medical conditions can also make gums bleed more easily — mention these at your visit.

References

Grounded in standard dental textbooks and professional guidance. These are general sources, not a substitute for an in-person exam.

  1. Newman MG, Takei HH, Klokkevold PR, Carranza FA. Carranza's Clinical Periodontology.
  2. American Dental Association. Oral Health Topics.

This is general information written by a dentist, not personal medical advice. If you are in pain, swollen, or unsure, see a qualified dentist.

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Written by a dentist · Evidence-based · Not a substitute for an exam