Influencers swear by it. Natural health blogs call it ancient wisdom. The claim is that swishing coconut oil — or sesame oil — around your mouth for 15 to 20 minutes pulls toxins from your body and cures gum disease, bad breath, and more.

You've probably considered trying it. Maybe you already do.

Here's what the research actually shows — and what it doesn't.

Oil pulling originates from Ayurvedic medicine — an ancient Indian medical tradition. The practice involves swishing a tablespoon of oil (coconut, sesame, or sunflower) around your mouth for 15 to 20 minutes, then spitting it out.

Advocates claim it draws toxins from the body through the mucous membranes of the mouth. The oil, they say, attracts and traps bacteria, heavy metals, and other toxins, which are then expelled when you spit the oil out.

Claims range from curing bad breath to reversing gum disease, preventing cavities, and even improving systemic conditions like diabetes and eczema.

There have been a small number of clinical studies on oil pulling. Here is what they consistently show:

Bad breath. There is modest evidence that oil pulling reduces volatile sulphur compounds in the mouth — the gases that cause bad breath. Coconut oil appears to have some antibacterial effect against the specific bacteria that produce these compounds. This effect is real but comparable to — not superior to — standard chlorhexidine mouthwash.

plaque and gum inflammation. Some studies show a modest reduction in plaque and gum bleeding with oil pulling. Again, the effect is similar to chlorhexidine mouthwash but not superior. The studies are generally small, short-term, and not always well-designed.

Cavity prevention. No good-quality evidence that oil pulling prevents cavities. The mechanism proposed — bacteria being "pulled out" — is not supported by microbiology. You cannot draw bacteria out of gum pockets or between teeth through a swishing action.

Systemic conditions. There is no credible evidence that oil pulling affects diabetes, eczema, or any condition outside the oral cavity. The "toxin" claim is not scientifically meaningful in this context.

Most studies on oil pulling have significant methodological weaknesses: small sample sizes, no blinding, short duration (typically 2 to 4 weeks), and often funded by promoters of natural health products.

The British Dental Association and the NHS do not recognise oil pulling as an evidence-based dental practice. It is not taught in UK dental schools as a clinical recommendation.

This does not mean it is harmful — swishing oil is not dangerous in itself. It means the extraordinary claims made for it are not supported by the evidence.

Oil pulling, if you enjoy it, is unlikely to cause harm. But it should not replace anything on this list:

• Twice-daily brushing with fluoride toothpaste
• Daily flossing or interdental cleaning
• Regular dental check-ups — not just when something hurts
• Professional hygiene appointments to remove tartar that brushing cannot reach

If you have gum disease, an oil rinse will not treat it. You need professional cleaning and, in some cases, targeted antimicrobial treatment from a dentist or periodontist.

Oil pulling is not harmful — but it is not medicine. If you do it and it helps your bad breath, that may be because you are spending 20 minutes swishing and then rinsing, which encourages you to pay more attention to your oral hygiene overall.

The benefit, if there is one, is probably behavioural — not from the oil itself. You would get the same benefit from 20 minutes of mindful flossing.

If you have genuine oral health problems — bleeding gums, persistent bad breath, loose teeth — see a dentist. Oil pulling will not fix them. Proper diagnosis and professional treatment will.

At Meads Village Dental Practice, we believe in evidence-based care — which means being honest with you about what works and what doesn't, even when that's not the answer you were hoping for.

Call 01323 723757 or book at www.meadsdental.com