Last updated: April 2026. Clinical information cited from NHS.uk, GOV.UK Delivering Better Oral Health Toolkit, the Adult Oral Health Survey 2023, NICE guidelines, the British Society of Periodontology (BSP), and the Oral Health Foundation. NHS dental charges confirmed from 1 April 2025.
You notice pink on your toothbrush after brushing, or a metallic taste in your mouth first thing in the morning. Perhaps your gums bleed when you floss, or when you bite into an apple. If this sounds familiar, you are not alone — and you should not ignore it.
Bleeding gums are one of the most common dental symptoms in the UK. According to the Adult Oral Health Survey 2023 (published December 2025), 93% of UK adults have at least one periodontal condition, and only 7% have completely healthy gums. Yet many people dismiss bleeding gums as normal or unimportant.
The truth is that bleeding gums are not normal. They are your body's early warning sign that something needs attention — usually gum disease caused by plaque build-up. The good news? In most cases, the earliest stage (gingivitis) is fully reversible with the right care.
This guide explains why gums bleed, what you can do at home, when you need professional treatment, how much it costs on the NHS and privately, and the warning signs that mean you should see a dentist urgently.
Why Are My Gums Bleeding? The Most Common Causes
There are several reasons your gums might bleed. Some are straightforward and easy to address; others may need professional investigation.
1. Plaque Build-Up and Gingivitis (The Most Common Cause)
The single most common reason for bleeding gums is plaque — a sticky film of bacteria that forms on your teeth every day.
"Gum disease is caused by a build-up of plaque on the teeth. If you do not remove plaque from your teeth by brushing and cleaning in between them regularly, it builds up and irritates your gums." — NHS, Gum Disease
When plaque accumulates along the gum line, your immune system responds to the bacteria by sending more blood to the area. This causes inflammation — red, swollen gums that bleed easily. This early stage is called gingivitis.
The Oral Health Foundation confirms that bleeding gums are "usually an early warning sign" of gum disease, and that gingivitis "can be reversed with good daily cleaning and advice from your dental team."
If gingivitis is left untreated, it can progress to periodontitis — a more serious condition that damages the bone and tissues supporting your teeth, and cannot be reversed (though it can be managed).
2. Brushing Too Hard or Using a Hard-Bristled Toothbrush
Vigorous brushing does not mean cleaner teeth. Using excessive force or a hard-bristled toothbrush can injure the delicate gum tissue and cause bleeding — even if your gums are otherwise healthy.
The NHS recommends a toothbrush with "a small head and a compact, angled arrangement of long and short round-end bristles" with medium or soft bristles. If your brush looks splayed or flat within a few weeks, you are likely pressing too hard.
3. Starting a New Flossing or Interdental Cleaning Routine
If you have just started flossing or using interdental brushes for the first time, some bleeding in the first week or two is common. This usually happens because the gums in those areas are already mildly inflamed from plaque that has not been disturbed before.
With consistent daily cleaning, the bleeding typically reduces within one to two weeks as the gums become healthier. If it continues beyond two weeks, see your dentist.
4. Medications
Several types of medication can affect your gums or increase bleeding:
Blood thinners (anticoagulants) — The NHS lists "bleeding gums" as a recognised side effect of anticoagulant medications including warfarin, rivaroxaban, dabigatran, apixaban, and edoxaban.
Bleeding gums are listed among the bleeding complications of anticoagulants. — NHS, Anticoagulants
Calcium channel blockers — Used for high blood pressure and heart conditions, these can cause gingival hyperplasia (gum overgrowth), making the swollen tissue more fragile and prone to bleeding.
"Gingival enlargement...most commonly seen with calcium channel blockers for cardiovascular disease." — GOV.UK, Delivering Better Oral Health — Chapter 5: Periodontal Diseases
Antidepressants and other medications causing dry mouth — Reduced saliva flow weakens your mouth's natural defences against bacteria, increasing the risk of gum disease.
If you take any of these medications and notice your gums bleeding more than usual, mention it to both your dentist and your GP. Do not stop taking prescribed medication without medical advice.
5. Hormonal Changes
Hormonal shifts can make gums more sensitive to plaque, increasing inflammation and bleeding:
Pregnancy — Hormonal changes during pregnancy increase gum vulnerability to plaque, a condition known as pregnancy gingivitis. The NHS specifically advises pregnant women to be vigilant about gum health and to attend dental check-ups regularly. Importantly, dental treatment is free on the NHS throughout pregnancy and for 12 months after giving birth.
"Bleeding gums are caused by a build-up of plaque on the teeth." — NHS, Bleeding Gums in Pregnancy
Menopause — The NHS recognises "sensitive teeth, painful gums or other mouth problems" as a symptom of menopause, caused by declining oestrogen levels that affect blood flow to the gums.
Puberty — Increased hormone levels during puberty can heighten the gum's inflammatory response to plaque, making bleeding more likely during the teenage years.
6. Vitamin Deficiencies
Vitamin C deficiency (scurvy) — The NHS identifies "swollen, bleeding gums" as a key symptom of scurvy. While rare in the UK, it can occur in people with very restricted diets. Most cases resolve quickly once vitamin C intake improves.
"Swollen, bleeding gums (sometimes teeth can fall out)" is a key symptom of scurvy. — NHS, Scurvy
Vitamin K deficiency — Vitamin K is essential for blood clotting. Deficiency can increase bleeding tendency from any source, including the gums. This is uncommon in adults with a balanced diet but can occur with certain medical conditions or medications.
7. Smoking
Smoking has a complex relationship with gum disease. The GOV.UK Delivering Better Oral Health Toolkit states:
"Tobacco smoking and use of smokeless tobacco products have a profound effect on the risk of developing periodontitis." — GOV.UK, Delivering Better Oral Health — Chapter 5
An important point many people miss: Smokers may actually see less visible bleeding from their gums than non-smokers, despite having more severe underlying disease. This happens because nicotine constricts blood vessels, masking the bleeding that would normally alert you to a problem. If you smoke, do not take the absence of bleeding as a sign of healthy gums — regular dental check-ups are especially important.
8. Diabetes
There is a well-established bidirectional relationship between diabetes and gum disease:
"The inflammation, which occurs in the gums, escapes into the bloodstream and upsets the body's defence system, which in turn affects blood sugar control." — British Society of Periodontology, Gum Disease and Diabetes
People with diabetes are more susceptible to gum infections, and untreated gum disease can make blood sugar harder to control. The NHS specifically advises people with type 2 diabetes to attend dental check-ups more frequently.
9. Underlying Medical Conditions
In rare cases, persistent or severe gum bleeding can indicate a more serious underlying condition:
Leukaemia — The NHS lists "unusual and frequent bleeding, such as bleeding gums or nosebleeds" as a symptom of acute myeloid leukaemia (AML).
"Unusual and frequent bleeding, such as bleeding gums or nosebleeds." — NHS, Acute Myeloid Leukaemia Symptoms
Other blood disorders — Conditions affecting platelet count or blood clotting, such as haemophilia, can increase bleeding from the gums.
When to be concerned: If your gums bleed heavily, spontaneously (without brushing), or the bleeding does not stop within a few minutes, this warrants urgent investigation — see the "When to See a Dentist Urgently" section below.
Gingivitis vs Periodontitis: Understanding the Two Stages
Not all gum disease is the same. Understanding which stage you may be at helps you take the right action.
Gingivitis (Early Stage — Reversible)
Gingivitis is inflammation confined to the gum tissue itself. It has not yet affected the bone or deeper structures supporting your teeth.
Symptoms:
- Gums that bleed when brushing or flossing
- Red, swollen, or tender gums
- Bad breath or an unpleasant taste
The critical point: Gingivitis is fully reversible. With improved oral hygiene and professional cleaning, your gums can return to full health. The GOV.UK Delivering Better Oral Health Toolkit confirms:
"Regular effective self-performed plaque removal offers the largest treatment benefit." — GOV.UK, Delivering Better Oral Health — Chapter 5
Periodontitis (Advanced Stage — Manageable but Not Reversible)
If gingivitis is left untreated, it can progress to periodontitis. This involves:
- Bone loss around the teeth
- Periodontal pockets (gaps between the tooth and gum deeper than 3.5mm)
- Gum recession
- Teeth becoming loose or shifting position
- Eventually, tooth loss
The Oral Health Foundation states: "There is no cure for periodontal disease, but it can be controlled" with ongoing professional treatment and excellent home care.
How common is this? The Adult Oral Health Survey 2023 found that 28% of UK adults have periodontal pocketing exceeding 3.5mm, and 12% have severe pocketing of 5.5mm or more.
| Stage | Symptoms | Reversible? | Treatment |
|---|---|---|---|
| Gingivitis | Bleeding, red, swollen gums | Yes — fully reversible | Improved brushing + professional clean |
| Early periodontitis | Deeper pockets (4–5mm), early bone loss | No — but manageable | Deep cleaning (root planing) |
| Moderate periodontitis | Pockets 5–7mm, noticeable bone loss | No — but manageable | Intensive periodontal treatment |
| Advanced periodontitis | Pockets 7mm+, loose teeth, significant bone loss | No — limited options | Surgery, extractions, or implants |
How to Stop Bleeding Gums at Home
If your gums are bleeding, there is a lot you can do yourself. These steps are backed by NHS and GOV.UK clinical guidance.
Brush Twice Daily with the Right Technique
The NHS recommends brushing for approximately two minutes, twice a day, with one session being last thing before bed. Use a fluoride toothpaste and clean all surfaces — inside, outside, and chewing surfaces.
Key tips from the NHS:
- Hold the brush at a 45-degree angle to the gum line
- Use small, gentle circular or short back-and-forth strokes
- Do not scrub vigorously — let the bristles do the work
- Spit after brushing, do not rinse — rinsing washes away the concentrated fluoride that protects your teeth
"Spit out after brushing. Do not rinse your mouth immediately after brushing, as it will wash away the concentrated fluoride in the remaining toothpaste." — NHS, How to Keep Your Teeth Clean
Clean Between Your Teeth Daily
Brushing alone only reaches about 60% of your tooth surfaces. Plaque hiding between teeth and below the gum line is a major cause of gum bleeding.
The NHS recommends using floss or interdental brushes daily, ideally before brushing:
- Interdental brushes are generally more effective than floss for most people
- Choose the right size — they should fit snugly without forcing
- Use a gentle back-and-forth motion; do not snap floss against the gums
- If your gums bleed at first, keep going — the bleeding should reduce within one to two weeks
Use Mouthwash at the Right Time
The NHS specifically advises: do not use mouthwash immediately after brushing — it rinses away the fluoride from your toothpaste. Instead, use it at a separate time, such as after lunch.
For active gum disease, your dentist may recommend a short course of chlorhexidine mouthwash. The GOV.UK Delivering Better Oral Health Toolkit notes that chlorhexidine shows "high certainty evidence" for reducing plaque and gingivitis. However, it is intended for short-term use only, as it can cause tooth staining and taste disturbance with prolonged use.
Replace Your Toothbrush Regularly
The NHS recommends replacing your toothbrush (or electric toothbrush head) every one to three months, or sooner if the bristles become splayed.
Stop Smoking
Quitting smoking is one of the most significant things you can do for your gum health. The GOV.UK toolkit confirms that smoking cessation can "prevent further deterioration" of periodontal disease and improve treatment outcomes. Your dentist can refer you to free NHS stop smoking services.
Eat a Balanced Diet
A diet rich in vitamin C (citrus fruits, peppers, broccoli, strawberries) and vitamin K (leafy greens, broccoli) supports gum health and healthy blood clotting. Reducing sugary foods and drinks also limits the fuel available for plaque bacteria.
Professional Treatment for Bleeding Gums
When home care is not enough, professional treatment can address the underlying cause.
Scale and Polish (Dental Hygienist Visit)
A professional clean removes plaque and tartar (hardened plaque) that you cannot remove with brushing alone. The hygienist will also demonstrate correct brushing and interdental cleaning techniques tailored to your mouth.
On the NHS (England): A scale and polish is covered under Band 1 (£27.40) if your dentist determines it is clinically necessary — for example, if you have plaque build-up causing gum inflammation.
"A simple scaling is included in a Band 1 course of treatment if it's clinically needed." — NHS, How Much NHS Dental Treatment Costs
Important: If your teeth are healthy and a scale and polish is not clinically required (for example, for cosmetic stain removal), you will need to pay privately.
Root Planing (Deep Cleaning)
For periodontitis with pockets deeper than 3.5mm, your dentist may recommend root planing (also called subgingival debridement). This involves cleaning below the gum line to remove bacteria from the tooth root surfaces.
This is usually carried out under local anaesthetic and may require multiple appointments depending on the extent of the disease.
On the NHS (England): Root planing falls under Band 2 (£75.30).
Periodontal Surgery
In severe cases where non-surgical treatment has not been sufficient, your dentist may refer you to a periodontist (gum specialist) for surgical options including:
- Flap surgery — lifting the gum to clean deep pockets and reshape bone
- Bone grafts — rebuilding bone lost to periodontitis
- Gum grafts — covering exposed tooth roots from severe recession
On the NHS (England): Complex periodontal surgery falls under Band 3 (£326.70).
How Much Does It Cost to Treat Bleeding Gums?
NHS Dental Charges (England) — From 1 April 2025
| Band | Cost | What It Covers for Gum Treatment |
|---|---|---|
| Band 1 | £27.40 | Examination, diagnosis, scale and polish (if clinically needed), oral hygiene advice |
| Band 2 | £75.30 | Root planing (deep cleaning), extensive gum treatment, complex scaling |
| Band 3 | £326.70 | Periodontal surgery, complex reconstruction |
| Urgent | £27.40 | Emergency assessment for acute gum problems |
How NHS banding works: You pay once per course of treatment, even if it requires multiple visits. If treatments from different bands are needed, you only pay for the highest band. Further treatment within two months at the same or lower band incurs no additional charge.
NHS Charges Across the UK
| England | Wales | Scotland | Northern Ireland | |
|---|---|---|---|---|
| Check-up + scale | £27.40 | £20.00 | 80% of cost | 80% of cost |
| Deep cleaning | £75.30 | £60.00 | 80% of cost | 80% of cost |
| Maximum charge | £326.70 | £260.00 | £384 | £384 |
| Free examinations | No | Under 25 and over 60 | All patients | No |
| Free for young adults | Under 18 | Under 18 | Under 26 | Under 18 |
Scotland: Dental examinations are free for everyone, regardless of age or income.
Wales: From April 2026, patients pay 50% of treatment package value, capped at £384 maximum.
Private Treatment Costs (Typical UK Ranges)
| Treatment | Typical Cost |
|---|---|
| Dental hygienist (30-minute scale and polish) | £70–£100 |
| Extended hygienist appointment (45–60 minutes) | £100–£150 |
| AirFlow jet cleaning | £100–£150 |
| Root planing (per session) | £199–£400 |
| Periodontal specialist consultation | £100–£400 |
| Advanced periodontitis treatment programme | £1,000–£4,000+ |
| Periodontal surgery (flap surgery) | £1,000–£3,000 |
London prices tend to be at the higher end of these ranges.
The Cost of Waiting
Catching gum disease early saves significant money. Five years of ignoring bleeding gums can lead to tooth loss, with replacement costs of £2,500–£3,000 per dental implant or £6,000–£13,500 for multiple implant replacements. A £27.40 NHS check-up now is far more cost-effective than advanced treatment later.
Who Gets Free NHS Dental Treatment?
You qualify for free NHS dental treatment in England if you are:
- Under 18, or 18 and in full-time education
- Pregnant or within 12 months of giving birth (with Maternity Exemption Certificate)
- Receiving Income Support, income-based Jobseeker's Allowance, or income-related Employment and Support Allowance
- Receiving Pension Credit Guarantee Credit
- Receiving Universal Credit with take-home pay of £435 or less (or £935 with child element)
- Named on a valid NHS Tax Credit Exemption Certificate or HC2 certificate
You can check eligibility and apply for help with NHS dental costs through the NHS Business Services Authority.
When to See a Dentist
Non-Urgent (Book a Routine Appointment)
The NHS advises seeing a dentist if you notice:
- Gums that bleed when brushing, flossing, or eating hard foods
- Gums that are painful and swollen
- Persistent bad breath
- A child with sore or bleeding gums
These symptoms suggest gum disease that needs professional assessment and treatment, but they are not emergencies. Book a check-up with your dentist at your earliest convenience.
When to See a Dentist Urgently
The NHS lists these as reasons to seek an urgent dental appointment:
- Gums that are "very sore and swollen"
- Teeth "becoming loose or falling out"
- "Ulcers or red patches in your mouth"
- "A lump in your mouth or on your lip"
These symptoms may indicate advanced gum disease, infection, or — in rare cases — a more serious condition that needs prompt investigation. — NHS, Gum Disease Symptoms
When to Call NHS 111 or Visit A&E
Contact NHS 111 (available 24/7 online or by phone) if you have:
- Intense pain in your gums alongside swelling in your face or jaw
- A high temperature with dental symptoms
- Unable to find an emergency dental appointment
Call 999 or go to A&E if you experience difficulty breathing, eye swelling, vision problems, or significant mouth or throat swelling that affects breathing or swallowing.
When Bleeding Gums May Indicate Something More Serious
In most cases, bleeding gums are caused by plaque and gum disease. However, you should see your GP (not just your dentist) if you experience:
- Gum bleeding that is spontaneous (not triggered by brushing) or does not stop within a few minutes
- Unexplained bruising elsewhere on your body
- Frequent nosebleeds alongside bleeding gums
- Persistent fatigue, night sweats, or unintentional weight loss
These symptoms together could indicate a blood disorder or other systemic condition that needs investigation.
Bleeding Gums During Pregnancy
Bleeding gums are particularly common during pregnancy due to hormonal changes that increase the gums' sensitivity to plaque. This condition, called pregnancy gingivitis, affects many pregnant women and is usually most noticeable in the second trimester.
NHS advice for pregnant women:
- Brush twice daily for two minutes with fluoride toothpaste
- Floss daily
- Use a soft-bristled, small-headed toothbrush
- After morning sickness, rinse with plain water and wait approximately one hour before brushing — stomach acid temporarily softens enamel
- Avoid alcohol-containing mouthwash
- Tell your dentist you are pregnant — most dental treatments are safe during pregnancy
Free NHS dental treatment is available throughout pregnancy and for 12 months after giving birth. Apply for a Maternity Exemption Certificate (FW8 form) through your midwife or GP.
Bleeding Gums and Your Overall Health
Gum disease does not just affect your mouth. The British Society of Periodontology highlights associations between periodontitis and several systemic conditions:
- Diabetes — Bidirectional relationship; treating gum disease can improve blood sugar control
- Cardiovascular disease — Bacteria from gum disease may contribute to inflammation in blood vessels
- Adverse pregnancy outcomes — Untreated gum disease has been associated with complications in pregnancy
- Rheumatoid arthritis — Emerging evidence of a link with periodontal inflammation
The BSP emphasises that these are associations, not proven causes. However, treating gum disease may have benefits beyond your oral health — another reason not to dismiss bleeding gums.
Frequently Asked Questions
Should I stop brushing if my gums bleed?
No. This is one of the most common misconceptions. Stopping brushing allows more plaque to build up, which makes the problem worse. Continue brushing gently but thoroughly, and the bleeding should reduce within one to two weeks as your gums become healthier. If it persists, see your dentist.
How long does it take for bleeding gums to heal?
With consistent, effective brushing and interdental cleaning, gingivitis-related bleeding typically improves noticeably within one to two weeks and can resolve fully within two to four weeks. More advanced gum disease takes longer and requires professional treatment.
Are bleeding gums always a sign of gum disease?
Usually, yes. Plaque-related gingivitis is by far the most common cause. However, bleeding can also result from medications (especially blood thinners), hormonal changes, vitamin deficiencies, brushing too hard, or — rarely — underlying blood disorders. A dental check-up can determine the cause.
Can bleeding gums cause bad breath?
Yes. The bacteria in plaque that cause gum disease also produce sulphur compounds responsible for bad breath (halitosis). Treating gum disease and improving oral hygiene typically resolves bad breath at the same time.
What is the best toothpaste for bleeding gums in the UK?
Any toothpaste containing fluoride (1,350–1,500 ppm for adults) will help. Some toothpastes are specifically formulated for gum health and contain ingredients like stannous fluoride. However, the brushing technique and consistency matter far more than the specific toothpaste brand.
Is a scale and polish free on the NHS?
A scale and polish is included in an NHS Band 1 course of treatment (£27.40 in England) only if your dentist determines it is clinically necessary — for example, due to gum disease. If your gums are healthy and you want a cosmetic clean, you will need to pay privately (typically £70–£100).
Can I reverse gum disease at home?
Gingivitis (early-stage gum disease) can often be reversed with improved oral hygiene at home — thorough twice-daily brushing and daily interdental cleaning. However, periodontitis (advanced gum disease with bone loss) requires professional treatment and cannot be reversed at home, only managed.
My gums bleed when I floss — should I stop flossing?
No. Bleeding when you first start flossing is normal and usually means those areas are already inflamed. Continue flossing gently every day, and the bleeding should stop within one to two weeks. If it continues beyond two weeks, see your dentist for assessment.
Taking Action: What to Do Next
Bleeding gums are your body's signal that something needs to change. The earlier you act, the better the outcome — gingivitis caught early is fully reversible, and treatment costs as little as £27.40 on the NHS.
Start today:
- Brush twice daily with fluoride toothpaste — spit, do not rinse
- Clean between your teeth daily with interdental brushes or floss
- Book a dental check-up if your gums have been bleeding for more than two weeks
If you are struggling to find an NHS dentist, contact NHS 111 (online or by phone, available 24/7) for help locating available dental services in your area.
