Oil pulling with coconut oil has not been proven to treat disease, but some evidence suggests it may reduce bacteria in the mouth
Oil pulling is the practice of swishing oil in your mouth for 10 to 20 minutes, then spitting it out. The idea is that the oil binds to bacteria and removes them. Coconut oil is popular for this because it contains lauric acid, a fatty acid with antimicrobial properties shown in laboratory studies. However, the evidence that oil pulling actually improves oral health in people is limited and mixed.
Most claims about oil pulling — that it whitens teeth, cures gum disease, or detoxifies the body — lack solid human research. A few small studies have found that oil pulling may reduce the bacteria count in saliva or lower markers of gum inflammation, but these studies are not large enough to confirm the effect works in real life, and they do not compare oil pulling to standard dental care like brushing and flossing.
The bottom line: oil pulling is unlikely to harm you if you do it alongside normal oral hygiene, but there is no evidence it replaces brushing, flossing, or professional cleaning. If you are interested in trying it, understand that it is an unproven practice, not a treatment.
Key Takeaways
- Laboratory research shows that lauric acid in coconut oil can kill some oral bacteria, but human studies testing whether oil pulling actually works are small and inconclusive.
- No peer-reviewed research supports claims that oil pulling whitens teeth, cures gum disease, or removes toxins from the body.
- Oil pulling should not replace brushing twice daily, flossing, or regular dental checkups.
- If you choose to oil pull, swish for 10 to 20 minutes and spit the oil into the trash, not the sink, to avoid clogging pipes.
What the laboratory evidence shows about coconut oil and oral bacteria
In test-tube and petri-dish studies, lauric acid — the main antimicrobial compound in coconut oil — does inhibit the growth of several bacteria found in the mouth, including Streptococcus mutans, which causes tooth decay. A 2015 study published in the journal Oral Health and Preventive Dentistry found that coconut oil reduced bacterial counts in saliva samples taken from volunteers, though the study was small (only 60 participants) and lasted only one week.
However, a test-tube result does not mean the same thing happens inside a living mouth. Saliva contains enzymes, proteins, and other compounds that may interfere with how lauric acid works. The mouth is also constantly rinsing itself with saliva, which could wash away the oil before it has time to act. No large, well-designed human trial has shown that oil pulling reduces cavities, gum disease, or other oral problems compared to standard brushing and flossing.
The gap between antimicrobial activity and actual health outcomes
Many substances kill bacteria in a dish but do not improve health when used in the body. Coconut oil's antimicrobial properties in the lab are real, but they do not automatically translate to clinical benefit. A 2016 systematic review in the journal Complementary Therapies in Medicine examined all available studies on oil pulling and found that while some showed small reductions in plaque or gum bleeding, the studies were poorly designed, had small sample sizes, and did not control for other factors like improved brushing habits or diet changes.
The researchers concluded that the evidence was too weak to recommend oil pulling as a treatment for any oral condition. Since then, no large randomized controlled trial — the gold standard for testing whether a treatment works — has been published on oil pulling.
Claims about teeth whitening and detoxification lack evidence
Social media and wellness blogs often claim that oil pulling whitens teeth or removes toxins from the body. Neither claim is supported by research. Teeth whitening requires either abrasion (physical removal of surface stains) or chemical bleaching (which coconut oil cannot do). Oil pulling does neither. If your teeth look whiter after oil pulling, it is more likely due to improved oral hygiene habits or placebo effect than to the oil itself.
The "detoxification" claim is even less grounded. The body has a liver and kidneys to filter waste; oil swished in the mouth for 20 minutes cannot reach the bloodstream or organs in any meaningful way. No toxins are removed by oil pulling, and the term "detoxify" in this context is marketing language without scientific basis.
How oil pulling compares to established oral hygiene
Brushing twice daily with fluoride toothpaste and flossing once daily are proven to reduce cavities and gum disease. Fluoride strengthens tooth enamel and is backed by decades of large human studies. Professional cleanings by a dentist or hygienist remove tartar that brushing cannot. These methods have measurable, reproducible effects on oral health outcomes.
Oil pulling has not been shown to do any of these things. If you spend 20 minutes oil pulling instead of brushing and flossing, you are trading a proven method for an unproven one. If you oil pull in addition to your normal routine, you are unlikely to see harm, but you are also unlikely to see benefit beyond what brushing and flossing already provide.
Why some people report feeling benefits from oil pulling
People who try oil pulling often report fresher breath, cleaner-feeling teeth, or reduced gum sensitivity. These sensations may be real, but they do not necessarily mean the oil is working as claimed. Swishing any liquid in your mouth for 20 minutes increases saliva flow, which can temporarily freshen breath. The mechanical action of swishing may dislodge some food debris, similar to rinsing with water. Improved oral hygiene habits — such as paying more attention to your mouth — can reduce gum inflammation and sensitivity regardless of what you use.
This is called the placebo effect: when you expect a treatment to work, you may notice improvements that are actually due to other factors or natural variation. Placebo effects are real in the sense that people genuinely feel better, but they do not mean the treatment is effective for the reason claimed.
Safety considerations if you choose to oil pull
Oil pulling is generally safe for most people. Coconut oil is edible and not toxic, though swallowing large amounts may cause digestive upset. The main practical concern is that oil should not go down your sink drain — it can solidify and clog pipes. Spit the oil into the trash or a compost bin instead.
If you have a diagnosed oral condition such as cavities, gum disease, or tooth sensitivity, do not rely on oil pulling as a substitute for professional dental care. See a dentist to rule out serious problems. If you are pregnant, nursing, or taking medications, check with your doctor before adding any new oral practice, though oil pulling itself is unlikely to interact with medications.
Frequently Asked Questions
Does oil pulling whiten teeth?
No. Coconut oil cannot bleach teeth or remove deep stains. If teeth appear whiter after oil pulling, it is likely due to improved brushing habits or the placebo effect, not the oil itself. Whitening requires either professional bleaching or abrasive polishing, neither of which oil pulling provides.
How long should I oil pull each day?
Most practitioners recommend 10 to 20 minutes. There is no research showing that longer is better. Start with 5 to 10 minutes if your jaw gets tired. Do not oil pull instead of brushing and flossing — do it in addition to your normal routine if you choose to do it at all.
Can oil pulling replace brushing and flossing?
No. Brushing with fluoride toothpaste and flossing are proven to prevent cavities and gum disease. Oil pulling has not been shown to do either. If you stop brushing and flossing to oil pull, you will likely develop dental problems. Oil pulling may be a supplement to standard care, but it is not a substitute.
Is coconut oil better than other oils for pulling?
Coconut oil contains lauric acid, which has antimicrobial properties in the lab. Sesame oil and other oils have been used traditionally, but no human studies show that one oil is more effective than another for oral health. The choice is largely a matter of taste and personal preference.
What does the research say about oil pulling for gum disease?
A few small studies found minor reductions in gum bleeding or plaque after oil pulling, but these studies were not well-designed and did not compare oil pulling to standard treatments like brushing, flossing, or professional cleaning. No large trial has shown that oil pulling treats gum disease. If you have gum disease, see a dentist.