Spit: Everything You Never Wanted To Know

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Warning: May contain the “m-word”…
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↓ More info and sources below ↓
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References/further reading:
“Gulp” by Mary Roach: A great read about the odd science of the digestive system
amzn.to/1U4i2N7 (Public library: www.worldcat.org/oclc/811599508)
Carpenter, Guy H. "The secretion, components, and properties of saliva."Annual review of food science and technology 4 (2013): 267-276.
Perry, George H., et al. "Diet and the evolution of human amylase gene copy number variation." Nature genetics 39.10 (2007): 1256-1260.
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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
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Stock images from SciencePhoto www.sciencephoto.com/ and Shutterstock www.shutterstock.com
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Опубликовано:

5 июн 2016

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Комментарии : 556

@loudrockacdc 7 лет назад

Saliva is protein? So will constantly swallowing my saliva lead to gainz?

@ilikemetal2910 5 лет назад

Yes

@i_am_superuser 3 года назад

and constantly spitting saliva will make you lose weight

@iamjesus6282 3 года назад

100 likes :)

@onixsii7708 2 года назад

and the biceps shrinks from salat

@FreaackyFreaky 8 лет назад

when I watched this my mouth produced more saliva

@gary_t5862 4 года назад

same

@durwin114 3 года назад

Hehe am the 69th like..NICE!

@sachinfulsunge9977 3 года назад

There has to be some neuro science behind this related to yawning and other contagious stuff. JOE NOTICE ME SENPAI

@besmart 8 лет назад

Spit. Saliva. Drool. Whatever you call it, it's weird stuff. But when you consider all the cool stuff it does, from being the first step of our digestive system to keeping our mouths free from dangerous bacteria, it becomes almost mouth-wateringly interesting.

@flawq3217 8 лет назад

That's true

@universeman657 8 лет назад

Okaaaay… XD

@fatmaninparadise2003 8 лет назад

Lolz, someone got triggered from the word 'moist'. HA!

@alexf4500 8 лет назад

Ok fine lets move on(moist)

@xavierxrc 8 лет назад

No Joe, O'Doyle Rules. (Family drives off a cliff and car explodes)

@Kram1032 8 лет назад

I really don't get what the problem with "moist" is.

@xXpallinnXx 8 лет назад

It is a joke about how a lot of people absolutely hate hearing the word moist

@Kram1032 8 лет назад

Bert The Derp I know. I really don't get those people is what I'm saying.

@tanktheta 8 лет назад

It's because......they can't get moist anymore. They moisted their last moist. But it was worth it. DAMN SON, THAT WAS A HARSH ONE.

@Nipponing 8 лет назад

The fuck?

@sciencepower608 8 лет назад

Mmmmmmmmmmooooooooooooiiiiiiiiiiissssssssssstttttttt

@swillas 8 лет назад

I don't understand why people hate the word moist, I, in fact, love it!

@sciencepower608 8 лет назад

Mmmmmmmmmmoooooooooiiiiiiiiiissssssssssttttttttt

@merevel436 8 лет назад

I do not get it either. It is just word... why is it censored?

@sulffojus1227 8 лет назад

+John McNemar youll know when your older lol

@Acehan 8 лет назад

"Moisturize". Pretty nice word.

@sciencepower608 8 лет назад

+John McNemar just wait

@illdie314 8 лет назад

I actually love the word moist. It's so unique and satisfying to hear.

@fleecejohnson2895 8 лет назад

"Coagulated Moisture Dripping From a Dank Tilt." - Most satisfying thing anybody has ever said.

@keri7031 6 лет назад

Copy cat

@MegaMGstudios 6 лет назад

*MOIST*

@someguy2135 4 года назад

I remember a commercial years ago that got a lot of airplay. Duncan Hines cake mix. They bragged about making cakes that were "moist!" ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7oqEf5IxtiQ.html

@perspective1409 8 лет назад

Can I just say that I really appreciate the captions here. So many science channels don't bother with the captions which can leave people out of the learning!

@TheMasonX23 7 лет назад

Finally found some real "spit facts" after Michael teased the concept...

@ShadowElementGod 8 лет назад

A guy walks into a bar and orders a drink. After a few more he needs to go to the can. He doesn't want anyone to steal his drink so he puts a sign on it saying, "I spat in this beer, do not drink!". After a few minutes he returns and there is another sign next to his beer saying, "So did I!"

@alphis7431 8 лет назад

tenouttaten

@AldjinnTV 8 лет назад

Dude keep the good ones for your stand up special on hbo

@meettalaustinsmiley 8 лет назад

lmao, good one

@sadickess4108 8 лет назад

+USSR In Soviet Russia…

@meettalaustinsmiley 8 лет назад

TheGamingKip Kipper In Soviet union, You don't make the jokes, the Jokes make you.

@selvizhisubramanian 3 года назад

why did I read the title as spit everything you wanted to know? 😂😂😂

@stockingsstuffer6302 7 лет назад

So, what's that feeling you get when you eat something that has an overbearing flavor note (eating something really sour, or sweet for the first time in a while) and that area in front of your jaw hinge suddenly hurts really bad?

@furallds 4 года назад

Your body will produce a lot of saliva to protect your mouth from the really sweet, sour, salty, etc stuff. You mentioned "for the first time in a while" which means there isn't much saliva in your mouth when you eat those stuff, so your parotid glands will work EXTRA hard to produce a lot of saliva, hence the sudden short pain around your jaw hinge (which is where the parotid glands are)

@stockingsstuffer6302 4 года назад

@@furallds Thanks, dude!

@finisherofwar 8 лет назад

You didn't talk about how licking wounds helps them heal.

@pokoirlyase5931 8 лет назад

+Samuel Peak yes it does ... It has coagulant (and antiseptic in some people) effect

@CarootCarrot 8 лет назад

before humans invented soap they peed on the wounds

@moxiousch 8 лет назад

Interesting! Is that really true? I was under the impression that our mouths carry too many bacteria for that to be effective. For example, if another human bit you, you'd be in pretty bad trouble precisely because of that. Even though spit might have a coagulant effect, wouldn't the bacteria problem override the usefulness?

@nicolejosan6364 6 лет назад

+moxiousch Your OWN spit is good for you, other's may poison you. HarHarHar...

@uncharted_soul 5 лет назад

future emperor of the galaxy I could have lived my whole life without knowing that. Thanks!

@fezii9043 7 лет назад

Who else felt like there was more saliva in their mouths while watching this video?

@crispybacon4240 8 лет назад

0:04 Mr. Hanky? DAMN IT, JOE.

@najee_eee 8 лет назад

Then why do we drool in our sleep if we make less spite in our sleep

@besmart 8 лет назад

Because you're not actively concentrating on keeping your mouth hole closed!

@Nipponing 8 лет назад

I think you meant spit.

@najee_eee 8 лет назад

+It's Okay To Be Smart ok thanks

@Nipponing 8 лет назад

I have a condition I think that makes me over produce saliva when sleeping. =(

@GamesFromSpace 8 лет назад

Less doesn't mean none.

@sadickess4108 8 лет назад

Can you make a video about corals' territorial wars? The subject really interests me and I'd love it if you made a video about it!

@yashdeshpande2733 8 лет назад

I thought it was mostly influenced by sea levels and temperatures?

@sadickess4108 8 лет назад

Yash Deshpande I don't think it was, because in 6th grade, I was in a Marine Science program, and I remember something about corals' territory growing and them having wars.

@jrrtt25 8 лет назад

the editing, jokes, and audio was great in this video. really important when the topic is so unpalatable to most viewers lol great video as always, and insightful. thanks Joe!

@Adyot.R 8 лет назад

This channel just keeps getting better and better!

@BarisUnver 8 лет назад

What's with the sound? Did you change editors or something? (The musics and sound effects are too high, compared to older videos.)

@Aeturnalis 3 года назад

2:55 When I was younger and used to party a lot, I made the mistake of going to bed without brushing my teeth (more specifically, I blacked out in my friend's back yard). The next day, I had the worst breath imaginable, and a cavity. After a few days of pain, I finally went to the dentist to get it filled. I can't say specifically that it was from that one day of not brushing, but that's the only cavity I've ever had, so that's the connection I make. If you only brush your teeth once a day, do it before sleeping!

@tmhchacham 8 лет назад

Great video, as usual. Keep up the GREAT work!

@mandah0520 3 года назад

I can't believe no one is talking about the Idiocracy reference. "Glucose, it's what cells crave"🤣🤣🤣

@adgames3537 8 лет назад

Since I am out of school you are my teacher :) Thanks so much

@Aarontlondon 8 лет назад

I don't know why, but I've fallen for you Joe

@MECKENICALROBOT 8 лет назад

It helps in healing too!!!

@arifkirmizitas 7 лет назад

Your videos are so amazing. I'd like to watch all your videos and meet you.

@KnowledgeCrew 8 лет назад

Great video! Apparently what I never wanted to know about saliva was that it is moist... oops, sorry, I said the "m-word".

@abdobedo9428 8 лет назад

This is an excellent video

@BillygotTalent 8 лет назад

Love the sneaky moist at 0:33

@josemartoquinojgtc 8 лет назад

In the name of science, I'll watch this video.

@samwolfenstein5239 8 лет назад

For science!

@secularmonk5176 8 лет назад

3:02 When my head has been unprotected in cold weather, or when I'm especially dehydrated (generally after going to the gym), if I try to eat too soon after, my parotid glands hurt like a mofo.

@albertomangia755 8 лет назад

So many sound effects in this video! Made me moist XD

@luciferbroke7875 5 лет назад

I love this vid so much idk why

@SamuelBoshier 8 лет назад

At school, we were told in biology that if you keep a piece of bread in your mouth, it will go sweet. It doesn't.

@hiimjorj6896 8 лет назад

Maybe with honey.

@SamuelBoshier 8 лет назад

#ffd700Give #ffd700Attention Or Jam (Jelly if you're American)

@hiimjorj6896 8 лет назад

We have two different names, jam and jelly, they are different, jam being more squishy and has less chunks than jelly, and jelly is slightly harder and has chunks in it, just use Google to see what I mean.

@dutchik5107 8 лет назад

+Neko Thief we have one name for it, only it sometimes says "with fruit pieces' or "no lumps" but both called jam. yeah, I'm Dutch.

@hiimjorj6896 8 лет назад

Dutchik Yeah, for me the label usually says fruit preserves on it.

@AdmiralBiach 8 лет назад

Cool video

@madisonhess7479 7 лет назад

Joe can you make a video about why braces and other orthopedic pieces make you drool more

@homeXstone 8 лет назад

0:32 i see what you did there!

@eliesch 8 лет назад

Me too, it was actually at 0:33-0:34... Lol

@homeXstone 8 лет назад

yea, but people clicking the time stamp need to be taken to a convenient spot in the video :P

@MultiLussebulleN 8 лет назад

I love the aet style of this channel

@shermanstepney2182 2 года назад

I love the thumbnail without context😂😂

@Msfr1sby 8 лет назад

One of the interesting things is that you will make different saliva if you're choking or have food stuck in your esophagus than if you're just regularly eating. The saliva you pump out in that situation, beyond being copious, has way more mucin than normal in order to get that bolus of food to slide.

@tylerkrug8126 8 лет назад

Yes hit us up with the Tommy Boy reference!

@2ndPerk 8 лет назад

So, the correct thing to do with saliva is to spit it out. Collect it in a cup, spend a couple of days gathering it. And when it's filled, you add some ice and have a nice refreshing cold drink.

@flaggkatten 8 лет назад

lol, the sound that the t-rex figure makes at 2:13 is the same noise as the tall deer in Far cry Primal makes when it's angry?

@ShahidKhan-eq1gx 8 лет назад

I was just watching your video on the Placebo effect and somehow that video has become my source of reference. I argue with people who support alternative medicine using your video lol. I confirmed each and everything in that video. Thanks

@musclehank6067 8 лет назад

whenever i wake up my mouth tastes really good and all of the saliva that is produced for a few minutes after i wake tastes really good too.

@Elhuggante 8 лет назад

The cephalic phase of digestion begins when we see, smell or think about food and triggers a parasympathetic response that stimulates the secretion of saliva among other elements necessary for priming the gastro-intestinal system for proper deglutition, digestion and absorption.

@anilchadha2429 8 лет назад

Nice shirt .

@Altorin 8 лет назад

hahaha.. that tommy boy reference was perfect absolutely perfect

@WHiT3_SHAD0W 4 года назад

Shoutout to Mr.Hanky at the beginning 🤘

@Bersekro 8 лет назад

Excelent video. Im teacher in Brazil and I learn very much with you. Thanks for share

@gojimoji9085 8 лет назад

I pray for your students spelling capabilities.

@Daft4LifeRevolution 8 лет назад

Don't make fun of foreign people who make grammatical or spelling mistakes when writing in English. It means they know more than one language, which is impressive when compared to the average American.

@gojimoji9085 8 лет назад

Safari Ari There are two kinds of people in this world, those who understand sarcasm, and you.

@Daft4LifeRevolution 8 лет назад

You do realize that when you type something as opposed to speaking, it is hard to detect sarcasm. And this definitely applies to someone who clearly isn't fluent in English. Think about it.

@NoName-bf4gk 8 лет назад

+Safari Ari

@GregoryRichardstheman 3 года назад

If I produce less when I sleep how am I still producing enough to wake up to a *moist* pillow sometimes? Or are my cheeks actually that flat against my pillow?

@dubya13207 8 лет назад

Whenever someone says "moist", I remember "Dead Like Me". Great show, cancelled too soon

@meidididi 7 лет назад

H-Hey you want some spit facts?? - Vsauce 2k16 Actual spit facts - It's okay to be smart 2k16

@mohamadzalzala7805 8 лет назад

Wait! So you said that less saliva is produced when a person sleeps, right? Does that mean that after brushing your teeth and not going to bed immediately after brushing the bacteria will start to destroy your teeth even though you brushed them, right? Which probably the reason as to why my teeth are decaying even after I started to brush them before (I take HOURS to fall asleep) sleep.

@RafaelRipollGallardo 8 лет назад

One of the funiest videos of this channel. LOL

@estebanlaguna4580 7 лет назад

i just love how he slips in moist xD

@largestmeat 7 лет назад

Vsauce should have made a spit facts video

@annyjadi3054 6 лет назад

xXx came here looking for this comment

@charlywow4460 8 лет назад

Anyone else watching this while eating?

@musclehank6067 8 лет назад

me i was eating a brownie :)

@FSM_Reviews 3 года назад

I'm eating cereal.

@veganchaatparty 8 лет назад

Super Superb!! Super Superb!! Super Superb!! Thanks.

@maxhill9254 4 года назад

thx

@tuanhnguyen7734 6 лет назад

Like your hair! 😊

@tuanhnguyen7734 6 лет назад

Nice hair style!

@paullobontiu6715 7 лет назад

gimme some of them spit facts boi

@thatdude2k9 8 лет назад

have some of my starch breaking liquid girlfriend XD

@tanktheta 8 лет назад

HENTAI!!!!!! Hahahaha

@dogeasaurusrex7421 8 лет назад

You have a liquid girlfriend? That's pretty weird

@tanktheta 8 лет назад

Dogeasaurus Rex It's called a slime girl.

@Nipponing 8 лет назад

You have a starch breaking liquid girlfriend!? The fuck?

@dogeasaurusrex7421 8 лет назад

Samuel Peak Without commas, you can interpret it however you wish,

@tinahan1244 6 лет назад

"thats where most of the cool spit happens" i see what you did there

@tanktheta 8 лет назад

I am making a hell of a lot of Moist jokes. Because I was moist before this video.

@huntersihelp 8 лет назад

To bad they're all terrible and hold no humor in them at all...

@tanktheta 8 лет назад

Net_Chix_AnKill? Cool, or it's just your interpretation given that alot of others have enjoyed my moistness on this video's comment section.

@s1gm42 2 года назад

That spit looks rather suggestive!

@saudiprince6532 8 лет назад

You've almost got a million

@philanderson7992 7 лет назад

spit facts

@nicolejosan6364 6 лет назад

Could you make a video about Xylitol? My friend is a dentist and said that those sugar eating bacteria go *POP* when they eat Xylitol. No more free Acid.

@amberjade0123 3 года назад

I can’t believe I’m eating while watching this

@bencesarosi7718 6 лет назад

Love the reference to Idiocracy

@70jcarbon 8 лет назад

I learned this last year

@SlyPearTree 8 лет назад

Drool rules? That's the furthest thing from my mind when I wake up in the middle of the night with my face resting in my spit. Thanks for the video

@cloudricklloyd1 8 лет назад

I actually love the idea of saliva in the right context

@Squigdude13 7 лет назад

Saliva is so important, yet we need it so much. It's like an old shoe, you think it's gross, but you will never get rid of it.

@nmheath03 8 лет назад

Not to mention it lowers chance of infection if put over cuts.

@christinesanderson3914 8 лет назад

While we're on the topic of food and stuff, sometimes when I taste something really sweet or that I think is delicious, the first bite makes my jaw super sore and tender. Does that happen to anyone else and why?