Articles, Blog

What causes bad breath? – Mel Rosenberg

October 23, 2019

There is a curse that has plagued humanity
since ancient times. The Greeks fought it by chewing
aromatic resins, while the Chinese resorted to egg shells. In the ancient Jewish Talmud, it’s even considered
legal grounds for divorce. This horrible scourge is halitosis,
otherwise known as bad breath. But what causes it,
and why is it so universally terrifying? Well, think of some of the worst
odors you can imagine, like garbage, feces or rotting meat. All of these smells come from the activity
of microorganisms, particularly bacteria, and, as disgusting as it may sound, similar bacteria live in the moisture-rich
environment of your mouth. Don’t panic. The presence of bacteria in your body
is not only normal, it’s actually vital
for all sorts of things, like digestion and disease prevention. But like all living things,
bacteria need to eat. The bacteria in your mouth
feed off of mucus, food remnants, and dead tissue cells. In order to absorb nutrients
through their cell membranes, they must break down the organic matter
into much smaller molecules. For example, they’ll break proteins
into their component amino acids and then break those down even further
into various compounds. Some of the foul-smelling
byproducts of these reactions, such as hydrogen sulfide and cadaverine, escape into the air and waft their way
towards unsuspecting noses. Our sensitivity to these odors
and interpretation of them as bad smells may be an evolutionary mechanism
warning us of rotten food and the presence of disease. Smell is one of our most intimate
and primal senses, playing a huge role
in our attraction to potential mates. In one poll, 59% of men and 70% of women said they wouldn’t go on a date
with someone who has bad breath, which may be why Americans alone spend $1 billion a year
on various breath products. Fortunately, most bad breath
is easily treated. The worst smelling byproducts come from
gram-negative bacteria that live in the spaces
between gums and teeth and on the back of the tongue. By brushing and flossing our teeth, using antibacterial mouthwash at bedtime, gently cleaning the back of the tongue
with a plastic scraper and even just eating a healthy breakfast, we can remove many of these bacteria
and their food sources. In some cases,
these measures may not be enough due to dental problems,
nasal conditions, or rarer ailments, such as liver disease
and uncontrolled diabetes. Behaviors like smoking
and excessive alcohol consumption also have a very recognizable odor. Regardless of cause, the bad smell almost
always originates in the mouth and not the stomach
or elsewhere in the body. But one of the biggest challenges lies in actually determining
how our breath smells in the first place, and it’s unclear why. It may be that
we’re too acclimatized to the smell inside
our own mouths to judge it. And methods like cupping your hands
over your mouth, or licking and smelling your wrist
don’t work perfectly either. One study showed
that even when people do this, they tend to rate the smell subjectively according to how bad
they thought it was going to be. But there’s one simple,
if socially difficult, way of finding out how your breath smells: just take a deep breath and ask a friend.


  • Reply ciortan natalia March 6, 2019 at 8:55 pm

    I don't know why but the intro sounds so mesmuarising

  • Reply Alessa Dolan March 14, 2019 at 12:34 am

    just brush you tongue with a tootbrush ??‍♀️

  • Reply TopBongo March 14, 2019 at 10:21 pm

    I love how they just clean his mouth while he just sits there not reacting to anything

  • Reply Nomi March 15, 2019 at 8:49 pm

    What if you don't have any friends?…. D:

  • Reply intense laughing emojis March 17, 2019 at 6:25 pm

    If you are vaping you can check your mouth breath easily
    By doing trick called

    Open your mouth
    Move your jaw a little bit further
    Close your mouth really slowly and at the same time breath with your nose

  • Reply rishitha varikuti March 22, 2019 at 5:48 pm

    3;52 lol

  • Reply Chutties Suryas March 26, 2019 at 9:34 am

    Amazing animation

  • Reply blue person March 31, 2019 at 4:45 am

    "There is a curse"

    Well I have it

  • Reply JRXY • April 2, 2019 at 11:57 pm

    Now Ik why my sisters breath stank

  • Reply SAACID TECH April 11, 2019 at 8:55 am

    Even the birds run away??

  • Reply Methomyl _Xd April 15, 2019 at 3:27 am

    I watched this while Eating A Huge burrito And A large Coke!!! LOL! im disappointed in my self!

  • Reply Kevin Harte April 15, 2019 at 7:54 am


  • Reply Bachu Miah April 18, 2019 at 8:15 am

    Jasmine masters: fix ur breath

  • Reply the super taco April 26, 2019 at 4:37 am

    that poor bacteria, got beat up

  • Reply MemeChip May 4, 2019 at 9:54 am

    but what if someone loves that smell???

  • Reply unicorn hi May 6, 2019 at 9:05 am

    I regret eating while watching this

  • Reply Vimala Dava May 9, 2019 at 5:57 pm

    Amerikanos = elstupidos

  • Reply It's my pets May 20, 2019 at 3:51 pm

    I got a toothpaste advertisement before the video ?

  • Reply angel king May 26, 2019 at 3:33 pm

    0:25 no it isnt

  • Reply Floosh May 26, 2019 at 7:18 pm

    0:15 If your gonna eat eggshells to prevent bad breath then it's just gonna make it worse…

  • Reply Carlos Fernandez May 31, 2019 at 5:01 am

    I love your videos!!!!!!!!!!!!!!!!!!!!!!!!

  • Reply Rahul Bijur Hemanth May 31, 2019 at 8:42 am


  • Reply Streamer By the way June 18, 2019 at 2:47 pm


  • Reply C Klan June 21, 2019 at 10:33 am

    I remember I kissed a girl that i really fancied when i was 17 and her breath was absolutely repugnant. It was like kissing rotten food

  • Reply Pamela Speedling June 23, 2019 at 3:12 am

    I’ had been troubled concerning my breath lately and I find it hard to talk to be people mainly because they may smell something odd coming from my mouth. This bad breath remedy “Kοtοnzο Zοtα” (Google it) is astounding and yes it actually works. I now have a better breath! .

  • Reply Jordan L June 24, 2019 at 11:30 pm

    This bad breath treatment “Kοtοnzο Zοtα” (Google it) was an absolute godsend. Right after reading everything in the book, I was really amazed by it. I didn`t know the cause of my terrible breath. Right after follow this method, now I not just know why it is occurring, but how to solve it as well. My breath was quite improved right after following every thing in this informative guide. .

  • Reply Diane Gomez June 30, 2019 at 1:46 pm

    I observed huge advancements when I started out following this terrible breath remedy “Kοtοnzο Zοtα’ (Google it) 2 days ago. There`s a girl I have wanted to ask out on a date for months but I was very paranoid about my breath I could not risk the rejection. I finally feel confident enough to go for it. Get this space watched! .

  • Reply Suman Chatterjee July 9, 2019 at 8:20 pm

    Several birds were harmed during the end of this video.

  • Reply Keyt Vintage July 10, 2019 at 2:55 am

    after the recommendation:
    me: no, no, I can't, uh-uh

  • Reply Dorothy Yergeau July 13, 2019 at 10:38 am

    Only One month ago I had been so gloomy. I don`t think I`ve ever been so low. It was all because of my terrible breath. I noticed it had been an issue when I noticed people at work shying away from speaking to. I cannot believe how well this bad breath solution “Kanzοzο Zato” (Google it) worked well. My breath is much better now! .

  • Reply Hookairs July 14, 2019 at 4:16 pm

    1:08 ? love it

  • Reply David Cote July 16, 2019 at 10:40 pm

    Halitosis isn’t real. Listerine coined the term halitosis so people would buy their products

  • Reply rylaicrystalmaiden03 July 16, 2019 at 11:58 pm

    I enjoy 1:08 so much ??

  • Reply TheTurqoise1 July 17, 2019 at 12:17 am

    Lol!!! I'm literally crying off of these animations.

  • Reply Rajat Gawande July 17, 2019 at 3:13 am


  • Reply Jeremie Salulog July 18, 2019 at 1:28 am

    I like tge animation LMAO

  • Reply Jianina Yodong July 19, 2019 at 2:22 pm

    Did they just drop a fruit in his mouth while brushing him…

    Also he just sat there like there wasn't a problem at all XDD

  • Reply Catalina Mayfield July 21, 2019 at 5:27 am

    I began this bad breath remedy “Kanzοzο Zato” (Google it) only 2 days ago however the difference has been impressive. There is a lady I`ve wanted to ask out on a date for months but I was really paranoid about my breath I could not risk the rejection. I have become more confident than ever before. Check out this space! .

  • Reply Diane Gomez July 21, 2019 at 8:17 am

    My breath was really embarrassing. It`s very bad that I forced myself to just stay home I tried every thing my dental professional told me to do but nothing worked for more than a few hours. Now I was able to get a fresher and also clean breath. This bad breath method “Kοtοnzο Zοtα” (Google it) has really finally given me my life back. .

  • Reply Bob Schoepen jr July 21, 2019 at 11:23 am

    Thanks to your VID I now live on a remote Island…

  • Reply Eleanor A July 22, 2019 at 8:07 pm

    The super colour fragile lipstick gives me halitosis

  • Reply Lady Hamilton xoxo July 22, 2019 at 9:57 pm

    Honestly I can tell when I have bad breath

  • Reply Valerie Preston July 25, 2019 at 4:29 am

    WARNING! Do not watch this while eating!

  • Reply Elaine Taylor July 27, 2019 at 8:33 am

    I had been beginning to get a serious complex about my breath and was really struggling to speak to individuals since I was really worried about what they might be "smelling", and how they`d respond. This terrible breath treatment “Kοtοnzο Zοtα” (Google it) is amazing and it really works. My breath is way better today! .

  • Reply winter Abraham July 31, 2019 at 2:25 am

    This comment section stinks
    We all know why! Lol

  • Reply Emma a July 31, 2019 at 7:41 am

    Of course you should brush and etc. You can eat capsule called Air left I guess so. That solve all the stomach problems that is causing a bad breath.

  • Reply 678_hero July 31, 2019 at 12:43 pm

    The super colour fragile lipstick gives me halitosis

  • Reply Burak Trkn August 1, 2019 at 11:50 pm

    I wouldn't recommend last one if u want to stay still friends.

  • Reply Catalina Mayfield August 3, 2019 at 6:39 pm

    I used to be ashamed of my breath. I actually did not wish to leave my house since it was so bad. After trying my dentist informed me, it just worked for a couple of hours. Now my breath is fresher, cleaner and 100% better. My life back is finally back to normal because of this bad breath method “Kanzοzο Zato” (Google it). .

  • Reply jj love August 6, 2019 at 2:31 pm

    Use Chewing Gum.

    Few Healthy regular eating/drinking habits for teeth cleaning:

    > Sometimes in a week or everyday Drink Hot Water.
    > Lemon water.
    > Eat apple.
    >> After dinner and eating all the food at night eat an apple ?.

    ***>Brushing teeth every in the morning and every night before bed.

  • Reply Dorothy Yergeau August 7, 2019 at 8:35 am

    This foul breath treatment “Kanzοzο Zato” (Google it) was an absolute blessing. Right after reading everything in the book, I had been truly amazed by it. I didn`t know the cause of my bad breath. Using this process made me realize not only the cause of my disorder, but its solution too. My breath was quite improved right after following every thing in this guide. .

  • Reply Ta August 12, 2019 at 2:16 am

    41% of men will go on a date even that girl have bad breath??? ok

  • Reply Maddie Fishblob August 16, 2019 at 1:21 am

    How would eating egg shells REDUCE bad breath?! ?

  • Reply Sylvester Marete August 21, 2019 at 5:56 pm

    Local man can't stop laughing

  • Reply Lord Toc August 23, 2019 at 4:51 am

    Only 1 month ago I was so miserable. It is most likely lowest moment of my life. The grounds behind all the ordeals was my terrible breath. I knew there was a problem with my breath when folks just avoid me each time I begin a conversation with them. I can`t believe how well this stinky breath treatment “Kοtοnzο Zοtα” (Google it) worked. My breath is much better now! .

  • Reply gayatri biswal August 25, 2019 at 4:34 pm

    3:45 – 3:56 ???

  • Reply Dorothy Yergeau August 26, 2019 at 10:41 am

    I have been following bad breath solution “Kοtοnzο Zοtα” (Google it) and my bad breath has completely vanished. I could now speak closely to people with self confidence mainly because my mouth is no longer bringing out any type of smell! .

  • Reply JSkillz August 26, 2019 at 11:40 am

    I feel like asking a close family member instead of a friend would work better. More likely to get an honest answer.

  • Reply Rj Pena August 26, 2019 at 2:58 pm


  • Reply Pandora *4915* August 28, 2019 at 12:30 am

    I licked my wrist..

  • Reply ivy saga August 28, 2019 at 6:37 pm

    Hey friend you have Halitosis. It wont hurt.

  • Reply Johnsmasher August 28, 2019 at 10:47 pm

    Deeyyuum, i brushed my teeth again after watching this

  • Reply Catalina Mayfield August 29, 2019 at 1:56 pm

    I was able to eradicate my bad breath when I followed bad breath treatment “Kοtοnzο Zοtα” (Google it). I now have so much more confidence because I can speak to people one on one without worrying about what kind of smell is coming out of my mouth! .

  • Reply Katherine August 29, 2019 at 3:15 pm

    Very good explanation! Thanks a lot!

  • Reply Cameron Badger August 29, 2019 at 5:51 pm

    I`m so happy that I have finally found something that works! And not only for me. It also worked for individuals who have problems with this life-ruining disorder. I was able to improve my breath in just a few hours after I started out employing this bad breath solution “Kοtοnzο Zοtα” (Google it). My spouse can now kiss me again contentedly! .

  • Reply Nijhum Pori August 30, 2019 at 3:09 am

    Ok the video was helpful but the animation was awful.

  • Reply فتاه - cutekey August 31, 2019 at 5:23 am

    i know why you are here

  • Reply *I see you there* August 31, 2019 at 11:27 pm

    Imagin a good looking guy with a bad breath smell. . .

  • Reply sandynoby September 1, 2019 at 7:35 am

    use of mouth washes is not good in long term …

  • Reply Bruce Anderson September 1, 2019 at 10:14 am

    I used to be embarrassed about my breath. I actually did not wish to leave my home as it was really bad. I attempted every little thing my dental professional informed me to do but nothing worked for more than a couple of hours. Now my breath is more fresh, clean and 100% better. This bad breath remedy “Kοtοnzο Zοtα” (Google it) has really finally given me my life back. .

  • Reply Gläzech September 2, 2019 at 5:11 pm

    3:52 the narrators face tho…

  • Reply KingGator223 September 3, 2019 at 2:36 am

    Ain't going to lie no matter what I do my breath still sticks even after cleaning it

  • Reply Only One MITCH! September 3, 2019 at 4:06 pm

    ?Bad breath bad breath!
    What you gonna do when toothpaste comes around?!

  • Reply sudaice jeymack September 4, 2019 at 4:04 am

    The last part ????????
    The animator has no chills yo!

  • Reply Ghost Blood September 6, 2019 at 7:54 pm

    I have a colleague who is very nice and all that bad has some serious bad breath
    I kept thinking to myself like wow he's breath is so bad
    But lately, a thought struck me and it's left me terrified
    What if he thinks the same of me??

  • Reply K.S.A September 7, 2019 at 7:48 pm

    ايضا اسفل الاسنان يتكون الجير ويظغط على اللثة مسببا نزيفها .زيارة الطبيب + معجون وفرشة اسنان. الوقاية خير من العلاج ???

  • Reply rsty.c FTW September 8, 2019 at 4:30 am

    Im sure i have bad breath but my friends wont tell me

  • Reply Ash Am September 8, 2019 at 4:46 am

    What's up with the unibrow?

  • Reply getaloadofthis bullshit September 8, 2019 at 9:27 am

    C A D A V E R I N E

  • Reply Zoey Perry September 8, 2019 at 9:08 pm

    Wtf I’m a Divorce u cuz ur Breath stink lmao ?

  • Reply Duong Thanh Quang September 9, 2019 at 1:39 pm

    But, what are the solutions ?

  • Reply Lalipame September 10, 2019 at 12:45 pm

    Just use dental floss every night an go to a professional cleanning at least once per year, and everything will be fine!!! My brother is dentist

  • Reply My life Rocks September 10, 2019 at 9:11 pm

    1:07 WAIT?!!! THAT'S


  • Reply Dawa k Sherpa September 10, 2019 at 11:08 pm

    Don't ask that to either your friends or family's member they will always say no you ain't got bad breath. try asking other who you don't know they tell you the truth.

  • Reply Bruce Anderson September 14, 2019 at 8:39 pm

    I used to be embarrassed about my breath. I literally didn`t want to leave my home as it was so bad. I attempted everything my dentist told me to do but nothing worked for more than a couple of hours. Now I had been able to get a more fresh as well as clean breath. This stinky breath method “Kοtοnzο Zοtα” (Google it) has literally finally given me my life back. .

  • Reply Maudine Acevedo September 15, 2019 at 8:05 pm

    Bad breath? There’s really nothing you can do about bad breath. Listerine tagged the name halitosis to sell mouthwash. Most people don’t know that listerine was a cleaning product to clean floors and even your feet.

    But some genius at lesterine decided let make it a mouth wash.
    And back then everything was sold door to door. So they went door to door to try and sell Listerine as a mouthwash but the problem is most Americans didn’t think they had bad breath. So Listerine was not making any sales.

    So the brainiacs in the marketing department for Listerine came up with the word halitosis which back then wasn’t even a medical term. They use fear mongering as a way to sell Listerine as a mouthwash. They created ads saying that you could have halitosis and your friends and lovers could be making fun of you behind your back..

    This ads made there profits rise 400 percent in less than 3 years.
    There is really nothing medically to do to erase bad breath. And bad breath doesn’t mean you have halitosis either.
    Like I said listerine company made up the word halitosis to sell more listerine.
    If your breath naturally smells bad that’s just something that nobody can fix. A mint in your mouth will last only about 3 to 5 minutes before that minty taste and smell is gone… mouth wash will work the same way.. you would have to use it 20 times a day. ..

    And baking soda?///. Yehhh I don’t think so. Baking soda may clean your teeth and gums but it’s not going to eliminate the natural odors of your insides. And if it did it would probably last as long as a mint A few minutes.

  • Reply bush jenkins September 16, 2019 at 1:26 pm

    I have bad breath , what should I do to get rid of it

  • Reply steven white September 17, 2019 at 5:02 am

    My life was really depressed last month. It`s probably lowest moment of my life. The grounds behind all the ordeals was my smelly breath. I knew there was an issue with my breath when people just avoid me every time I begin a conversation with them. Good thing I`ve discovered this effective terrible breath treatment method “Kοtοnzο Zοtα” (Google it). My breath is much better now! .

  • Reply The Bearded Dragons September 18, 2019 at 1:39 am

    Your mom – The Bearded Dragons, 2019

  • Reply Beta 3oh3 September 18, 2019 at 6:31 am

    There's a way to tell
    Just put your lick a spoon let it dry then smell it then you will know if it's bad or not

  • Reply Y ching September 18, 2019 at 8:58 am

    … 蛋殼有咩用…?

  • Reply Cindy T. September 19, 2019 at 6:47 am

    One time I told my best friend in 5th grade that she had bad breath and she got soooo upset. She literally asked to go home and didn’t talk to me for a week. We became friends again and she STILL didn’t brush her teeth or do anything about her breath. Girl.

  • Reply Nilsson Yao September 20, 2019 at 10:09 am

    3:50 when your characters about to die and you spam every ability you have ?

  • Reply NintenPlush September 21, 2019 at 4:05 am

    Are YouTube recommendations trying to tell me something

  • Reply G September 24, 2019 at 11:45 pm

    Did that last step you told me…

    Got suspended and charged for assault.

  • Reply Tai Season September 25, 2019 at 2:11 am

    @ 2:45 when he drops the orange in his mouth cracked me up

  • Reply Optulent September 25, 2019 at 4:40 am

    Tittle. What causes bad breath? Mel Rosenberg -of course ?

  • Reply Sharan chaudhary October 1, 2019 at 6:02 pm

    Ending is epic ??

  • Reply minh phat nguyen October 6, 2019 at 1:04 pm

    tonsil stones also

  • Reply Sponge Bob October 23, 2019 at 5:09 am

    ya I still got bad breath even after I brush my tongue with a lot of tooth paste, scrape my tongue and make sure my tongue is pink in da morning but I still got bad breath even though I chew gum and take mints all the time and I’m like ? cause people don’t wanna talk to me even when I breathe out my nose they can smell it just as if I was breathing out my mouth and I went to my doc and she looked like she didn’t give a sssss and I was just like ? so now I’m just a clean freak I take showers every morning before I gotta school and I drink water at least 3-2 whole water bottles at school everyday so I’m hydrated and I’m mad because people talk sss about me and they don’t like me and some be feeling bad 4 me and I don’t want that I just wanta live normal last year I didn’t even talk people say they got no friends but last year I seriously did not have anyone to hang out with at lunch so I played games on a computer alone and I didn’t want people to feel bad for me or look down on me and that just made my vibe and mood go hella hella mad and I was treating my family bad and I regret that

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