Fresh breath and clean oral hygiene are a must for many people. But could the regular use of mouthwash harbor unexpected risks?
New scientific findings show that occasional use of mouthwash is harmless. But those who rinse excessively could be exposing themselves to potential dangers.
Researchers analyzed 15 studies with a total of 6,515 cases and found no direct link between the general use of mouthwash and an increased risk of oral cancer. However, there is a threshold beyond which the frequency and duration of use appears to influence the risk.
How often is too often?
An increased risk was found particularly in people who used mouthwash three or more times a day or did so over a period of more than 40 years. The cause could lie in the alcohol content of many mouthwashes: Alcohol is converted to acetaldehyde in the mouth, a substance that is considered carcinogenic. However, the disruption of the oral microbiome could also play a role, as long-term use affects the natural balance of the oral flora.
How to use mouthwash safely
When using mouthwash, the rule is: less is more! Once or twice a day is sufficient - ideally not permanently. Even better: opt for alcohol-free variants, as no link to an increased risk of cancer has been established to date.
But the most important thing remains the basis of good oral hygiene: regular brushing, flossing and dental check-ups. Mouthwash can be a supplement, but should never be your main strategy for healthy teeth and gums.
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