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  • "Do Tongue Scrapers Cause Cancer?"

  • Tongue cleaning can reduce the stinky gaseous compound

  • that cause bad breath by up to 75%,

  • whereas just brushing your teeth alone may only reduce by 25%.

  • This is why tongue cleaning has the greatest priority

  • in the treatment of bad breath.

  • Are there any downsides?

  • Well, most people do not enjoy placing an object towards

  • the back of their throats, as it can trigger the gag reflex.

  • Tips to help prevent this include momentarily stopping breathing

  • during tongue cleaning.

  • You can experiment and if the mint flavor in toothpaste

  • sensitizes your throat to an elevated gag reflex,

  • you may want to clean the tongue before tooth brushing.

  • Some recommendations even suggest

  • doing it on an empty stomach in case vomiting ensues.

  • That doesn't sound very pleasant, but when tongue cleaning

  • is practiced on a daily basis, the process evidently

  • becomes easier and less objectionable over time.

  • So the main complaint of the subjects is the gagging reflex,

  • and also, you know, tongue carcinogenesis

  • related to mechanical stimulation.

  • Wait, tongue carcinogenesis means the development of tongue cancer.

  • These are unpleasant side effects associated

  • with tongue cleaning devices.”

  • Cancer is more than an unpleasant side effect!

  • I mean I know there's alcohol- containing mouthwashes,

  • and one might expect that to predispose people to oral cancer.

  • I talked about this in my alcohol and breast cancer video.

  • A single sip of an alcoholic beverage, one teaspoon swished

  • and even spit after just 5 seconds

  • results in carcinogenic concentrations of the toxic

  • alcohol breakdown product acetaldehyde

  • being produced from ethanol in the oral cavity instantly

  • after a small sip of strong alcoholic beverage,

  • and this exposure continues for at least 10 minutes

  • after just those 5 seconds.

  • And yes, this concern extends to alcohol-containing mouthwash.

  • Researchers determined that alcohol-containing mouthwashes

  • offers a rather low margin of safety

  • and that prudent public health policy should recommend

  • generally refraining from using them.

  • OK, yeah, we know alcohol causes cancer, but why tongue scraping?

  • Well, animal experiments have shown that mechanical injuries

  • of the tongue may be carcinogenic.

  • Ok, even if you could extrapolate to people,

  • are you actually injuring the tongue when you scrape it?

  • What exactly did these experiments entail?

  • Concerns have been raised based on an experiment in rodents

  • involving the experimental induction of tongue cancer

  • using carcinogenic dimethyl benzanthracene, a powerful carcinogen

  • found in cigarette smoke and broiled meats.

  • And they evidently produced more cancer with the carcinogen

  • if they injured the tongue using a root canal instrument.

  • Here's the study they cite.

  • Indeed, scratching their tongues with essentially a little piece

  • of barbed wire did result in more cancer, presumably because

  • the ulceration or injury allowed for greater retention

  • and penetration of the carcinogen into deeper tissue layers,

  • but people don't scrape their tongues with barbed wire.

  • Ah, but evidently even a regular toothbrush can do it.

  • This appears to be the study they cite for that,

  • but it doesn't say regular toothbrush,

  • but rather extreme mechanical stimulation.

  • Though then in the figure they say it was just

  • Just one stroke of a dental broach with a very light force

  • that did not cause bleeding,” which was apparently enough

  • to cause the cancer to show up about a month earlier.

  • So what was it a toothbrush, extreme stimulation

  • or just a light scratch?

  • Here's the original data, and thanks

  • to our wonderful Japanese volunteers

  • I am told it was no toothbrush.

  • And even if it was and could be extrapolated,

  • that was with a carcinogen.

  • So unless you were smoking or using chewing tobacco

  • or eating barbequed chicken every day,

  • there doesn't seem to be any parallel.

  • If you just scratch a hamster's tongue

  • with a barbed wire every day, no tumors develop.

  • And another thing…. Most human tongue cancers are found

  • on the side of the tongue, and so the relationship between

  • tongue scraping and cancer has not yet been confirmed in humans,

  • though there is still a possibility that mechanical stimulation

  • may be a cause, so I'd recommend taking it easy.

  • In this study, they had been brushing their tongue with an

  • electric toothbrush with medium hard bristles and ended up

  • causing an increase in the expression of c-fos in tongue muscle cells,

  • which is a protein that may be involved in cancer development.

  • Any kind of electrical device

  • for tongue cleaning is not recommended,

  • but even a manual toothbrush can cause some damage,

  • so-called micro-bleeding, therefore, tongue cleaning

  • should be carried out gently with low force

  • to avoid unnecessary tissue trauma and just

  • the top surface of the tongue should be cleaned, not the sides.

"Do Tongue Scrapers Cause Cancer?"

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B2 中高級 美國腔

Does Tongue Scraping Cause Cancer?

  • 11 3
    KERRY 發佈於 2023 年 01 月 23 日
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