Honey is a form of sugar and can contribute to tooth decay like any other sweet food, although manuka honey has some antibacterial properties and small studies suggest it may have a modest benefit for gum inflammation and mouth sores. It is not a replacement for brushing, fluoride or professional dental care.
With manuka honey sold at premium prices and promoted online as a natural remedy, it is worth separating what the research actually shows from the marketing.
Key takeaways
- All honey contains sugars (mainly fructose and glucose) that feed oral bacteria and can raise decay risk.
- Manuka honey has antibacterial activity in laboratory studies, but evidence for dental benefits in people is limited.
- A few small trials suggest it may reduce plaque and gum bleeding slightly, but the results are not strong enough to replace standard care.
- Never give honey to babies under 12 months because of the risk of infant botulism.
- If you use honey, have it with food, then rinse and brush later, rather than sipping or leaving it on the teeth.
Does honey cause tooth decay?
Yes, it can. Decay develops when bacteria in plaque ferment sugars and produce acid. Honey is sticky, so it can cling to the teeth and keep acid levels raised for longer than a sugary drink that is swallowed quickly. Honey in hot drinks, honey on toast and spoonfuls straight from the jar all count as sugar exposure.
What is special about manuka honey?
Manuka honey comes from bees that feed on the manuka bush in New Zealand and Australia. It contains a compound called methylglyoxal, which has antibacterial effects in laboratory tests. Products are graded by a rating such as UMF or MGO, with higher numbers indicating higher levels of the compound.
What does the research show?
| Claim | What the evidence suggests |
|---|---|
| Manuka honey kills bacteria in plaque | Shown in laboratory studies, less clear in real mouths |
| Reduces gum bleeding and plaque | Some small trials show modest improvement, but studies are limited in size and quality |
| Helps mouth ulcers heal | Limited evidence, mostly small studies |
| Helps mouth sores from radiotherapy | Studied in some patients, results are mixed and should be guided by the treating team |
| Prevents tooth decay | No good evidence, and honey's sugar content works against this |
| Replaces toothpaste or mouthwash | No. Fluoride toothpaste and proper cleaning remain the standard. |
In plain terms, manuka honey is not harmful in small amounts for most adults, but it is not a proven dental treatment either.
Are there safe ways to use honey?
- Have it as part of a meal rather than between meals.
- Rinse your mouth with water afterwards.
- Brush with fluoride toothpaste at least 30 minutes later if you have had something acidic, otherwise at your normal time.
- Avoid honey at bedtime after you have brushed.
- Choose a small amount rather than regular spoonfuls.
People with diabetes should speak to their doctor about honey and blood sugar. See our article on diabetes and gum disease.
Honey for sore throats and children
Honey is sometimes used for coughs, which is one reason it can end up on teeth at bedtime. Our guide to cough lozenges and tooth decay covers similar issues. For children over 12 months, small amounts can be considered, but they should be followed by teeth cleaning. Babies under one year should never have honey, including honey on dummies.
Honey versus other sweeteners
Honey, golden syrup, maple syrup and sugar all contribute to decay risk in a similar way. Frequency and stickiness matter more than the type. Our article on sugar-free syrups and sorbitol explains the alternatives, and our guide to foods and drinks for teeth gives a wider picture.
If your gums bleed
Bleeding gums are usually caused by plaque. Honey will not fix this. A professional clean, better home care and a check for gum disease are the proper steps. See our guide to bleeding gums.
Frequently asked questions
Is honey better for teeth than sugar?
Not meaningfully. Both can cause decay. Honey may even stick longer.
Can manuka honey cure gum disease?
No. Gum disease needs professional assessment and treatment. Manuka honey is not a proven treatment.
Is it safe to put honey on a mouth ulcer?
A small amount is generally considered low risk for adults, but evidence of benefit is limited. If an ulcer lasts longer than two weeks, see a dentist or doctor.
Is honey in tea bad for teeth?
It adds sugar, so sipping sweetened tea throughout the day is worse than having it once with a meal.
Can children have honey?
Children over 12 months can have small amounts. Never give honey to babies under one year.
Practical next step
If you are unsure how your diet affects your teeth, a check-up is a simple way to find out. The team at Lumi Dental offers general dental care, and new patient information is on the current deals page.
This article is general information and does not replace individual advice from your dentist or doctor.
