· Kensington Dental Care
Why Are My Gums Bleeding?
Usually an early gum-disease sign — but a few other factors can cause it too.
Bleeding gums are common, but they’re not something to brush off (so to speak) — in most cases, they’re an early signal worth paying attention to.
The most common cause: gingivitis
Bleeding when you brush or floss is often the first visible sign of gingivitis — inflammation caused by plaque buildup along the gumline. At this stage, it’s typically reversible with better hygiene and a professional cleaning.
Other possible causes
- Brushing too hard, or with a hard-bristled brush
- A new flossing habit, where gums bleed briefly as they adjust to the increased stimulation — this usually resolves within a week or two
- Hormonal changes, including pregnancy, which can make gums more prone to inflammation
- Certain medications, particularly blood thinners
- Vitamin deficiencies, particularly vitamin C or K
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When it’s more than gingivitis
If bleeding is persistent, accompanied by swelling, recession, or loose teeth, it may indicate more advanced gum disease (periodontitis), which needs more than a standard cleaning to address.
What to do
- Don’t stop flossing — inconsistent flossing is often what triggers bleeding in the first place
- Switch to a soft-bristled brush and gentle technique
- Book a cleaning if it’s been more than six months
- Get it checked promptly if bleeding persists beyond a couple of weeks of improved hygiene
Bleeding gums that aren’t improving? Book an exam so we can check what’s driving it.
For more on this, see our dental cleanings page.