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The Truth About Asparagus and Your Pee

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An astonishing amount of research has gone into the question of whether asparagus really makes your urine smell funny. Sci Show explains it all inside! Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1379935/pdf/brjclinpharm00087-0116.pdf http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1715705/pdf/brmedj00052-0020.pdf http://chemse.oxfordjournals.org/content/early/2010/09/27/chemse.bjq081.full http://udel.edu/~mcdonald/mythasparagusurine.html http://www.smithsonianmag.com/science-nature/why-asparagus-makes-your-urine-smell-49961252/?no-ist http://mentalfloss.com/article/24731/why-does-asparagus-make-your-pee-smell-funny http://www.bbc.com/future/story/20140818-mystery-of-asparagus-and-urine http://www.webmd.com/food-recipes/features/why-pee-smells-funny-eat-asparagus
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Текстовые комментарии (983)
Kevin Trombly (13 часов назад)
For the people that don't excrete it, wouldn't that simply (and obviously) mean they don't produce it? That they digest asparagus differently?
Michael Gibb (3 дня назад)
It's amazing how quickly the asparagus affects your urine. It takes like only an hour or two.
woodfur00 (1 месяц назад)
I forgot Subbable even existed.
Anna Williams (3 месяца назад)
"All you gotta do is eat some asparagus, wait a little bit, and then pee on your enemies. "
Diademglo (3 месяца назад)
I had this type of talking, non stop and agitating, maybe neurotic..
Breadzanagi (3 месяца назад)
Your butt
Matt Williams (5 месяцев назад)
Excretor and smeller here, lmao
Ardis's Adventures (7 месяцев назад)
Never mind about the asparagus pee. What I want to know is what is the science behind why your own farts smell better than other people’s farts.
CringeyCrud (8 месяцев назад)
My father can't smell the asparagus chemicals in his urine but my mom and I can. Weird, huh?
you said some people can't smell the meat?!! How is that possible?! Meat is so stincky and smelly!
SS WAYS (9 месяцев назад)
i just ate a bunch of it too lol
Christopher Day (9 месяцев назад)
Aw, have Hank pronounce "methanethiol" again, and again and again! ... :D
martinsen073 (10 месяцев назад)
I guess i excrete that acid cause i can smell it 10 minutes after
johnnieb15 (11 месяцев назад)
Yesterday was my first time eating asparagus and my pee smell was awful..I googled foul urine odor and asparagus popped up .I didn’t know things like this happen...Good to know I thought something was wrong with me😅
RedHybridPanda (11 месяцев назад)
Pee is stored in the balls
Jon Brodie (1 год назад)
methane-thiol (thigh-all), not methan ethiol.
Melora Foy (1 год назад)
I don't know if I'm a non-smeller or a non-excreeter, or both. I have never tried smelling anyone else's urine. My mom says hers never smelled different. Cilantro tastes odd to some people, including me. Some hate it and some are ok with it. It is genetic thing where you have an olfactory ability to smell a chemical in cilantro, which also exists in soaps. It makes cilantro taste like soap to them. I researched it. If it is crushed the smell disipates. There is a cilantro and lime pesto you can make and I'm gonna try it soon. I wonder if the cilantro and asparagus differences tend to appear together in some people.
FreeSpirit Sunflower (1 год назад)
"pee on your enemies" 😂
FullSpectrum Survivalist (1 год назад)
I wonder if any of these geniuses have looked into if i matters are not how it is prepared, because everyone's body is different. I can eat a sliced tomato just fine for instance with no problems, but fry it and give it to me in a Fajita meal and it acts up my acid reflex as the composition has changed. There is more work they need to do, they have solved little.
roughy762004 (1 год назад)
Genevieve Whitney (1 год назад)
here is a question for you. Why does it stink more when you fart in the shower?????
Matt Ryan Padora (1 год назад)
I had asparagus this morning and went to hot yoga this evening. My sweat is totally smelly. I hope the instructor had that specific anosmia to not smell it.
Mike S (1 год назад)
You know that creepy pretzel lady—the one with the bad brunette wig who says, "Prezels, baby!"? Because of her, I'm scared to death of pretzels! Now, I'm kinda creeped out about asparagus.
Guppy Guy (1 год назад)
yes my pee smells great after eating asparagus!
Edgewalker001 (1 год назад)
And I guess, I've never really checked this anywhere but it stands to reason, that skunks can't smell the... Well, the horrifyingly bad parts of their spray. Which is interesting since they basically have that method of defense because so many other animals are SUPER sensitive to those exact compounds, mostly since they are normally given off by really, REALLY rotten food, which we are sort of hardwired to avoid. So if skunks can't smell rotten meat and/or eggs, does that mean they're perfectly fine with eating it too? New topic of study: The immune system of skunks!
Branden's Outdoor Channel (1 год назад)
I just pissed asparagus juice and watched this
magan miller (1 год назад)
my asparagus pee is very very very strong
smokeystriper (1 год назад)
How bad must you life suck to become a professional pee sniffer?
scitechian (1 год назад)
PSA: Urine is not the only fluid coming out of that hole that will smell awkward after eating asparagus or onion.
Faultty (1 год назад)
Why does brown rice change urine door?
Jayden48 James (1 год назад)
heck no!, YUCK😣😲to the last question he ask. pee smellers must get paid a LOT!
Këlpy_G (2 года назад)
my asparagus pee smells like windex😂
TheMagicalC (2 года назад)
Brandon Booth (2 года назад)
Next, Beet smells...
Megan Moz (2 года назад)
Take notes, Luke Hemmings. Asparagus makes you stink.
Blayze Richardson (2 года назад)
For so long I thought vanilla was scent less, this makes me sad now knowing it isn't.
Blayze Richardson (2 года назад)
Will do.
Eileen Blurrr (2 года назад)
Blayze Richardson It smells like it tastes it's very good. Just eat some vanilla and you'll get the jist of it's smell.
D D (2 года назад)
it smells very nice
Ronald McReynolds (2 года назад)
When it comes to some possible studies, sometimes you just have to say no to knowledge and suck it up.  Or not.
Ardine Eveda (2 года назад)
NEVAR! We must know ALL the things.
Ali Elmoussa (2 года назад)
ur hilarious man
Carlo Van Caramel (2 года назад)
SO, you are a non-smeller, but you are a super taster. IS THERE A LINK? Do you struggle to smell things in general?
TheMagicalC (2 года назад)
Maybe. I'm a smeller and excreter, and have a very good sense of smell.
Poochamoo (2 года назад)
3:57 Indeed.
Teagan P (2 года назад)
Asparagusic acid is sooo creative...
Hiding in my room (2 года назад)
I drink my pee And asparagus pee Tastes gross Since I had it today
ByRecentDesign (2 года назад)
Do the non excreters have a different rate of occurrence of kidney diseases?
ImUhRandii (2 года назад)
1:51 115 people were experimented on. Element 115. Illuminati confirmed.
Andy Crowley Sr. (2 года назад)
I wonder if "non-excretors" just poop it out instead. like the comment on "Asparagas" flatulence
brian554xx (2 года назад)
I have delightfully nasty asparagus pee. Plus, sometimes, what I call "asparagas."
Shashank rabid dogg Susngi (2 года назад)
does asparagusic acid melt steel beams?
Brandon McKinney (2 года назад)
Deep Sea (2 года назад)
Hank is totes legit
fuzzeek78 (2 года назад)
question should be, did everyone in the test have the same diet?  Maybe Asparagus+ raw veggie diet= no smell.. or asparagus with pork vs. beef vs. 2000 other foods might have an impact. Idk, waste of tax money at any rate. Who sniffs their piss enough for it to be a huge factor
Ravriem (2 года назад)
+fuzzeek78 Good point about the combinations of food, but I would imagine they would have asked for a fasting period before the tests were performed. And it isn't necessarily a waste of tax money, as it is likely the funding came from other sources. Even it were tax money, the benefit isn't in saving the noses of people who smell asparagus urine. It comes in the fact that it led to a better understanding of the genetic cause of the difference. It might be a small piece of the puzzle, but it still increases our overall understanding.
TCarrot Gaming (2 года назад)
So that's why I can't smell skunk spray... okay!
magan miller (1 год назад)
awesomegreenlantern (2 года назад)
When ever I know I have drug tests, I eat an assload of asperagus to make my pee smell really bad, to punish the poor sucka who tests my pee.
magan miller (1 год назад)
Spoony (2 года назад)
What if the tester cant smell it? Then all your doing is eating healthy, and what's the fun in that?
Andy Crowley Sr. (2 года назад)
Julian Cool (2 года назад)
Any spare pee!!!? Idk I can't smell. 😎 thug life.
Lord Trump (2 года назад)
We need to analyze the shit from those whose pee did not smell bad (by those who can really smell it)
Mimi (2 года назад)
I don't like them so does my dog
April (2 года назад)
I've been trying to convince my mom forever that asparagus makes your pee smell weird and she'd never believe me but NOW I HAVE PROOF. And on a side note, I can't smell cat pee o.O
TLViolynn (2 года назад)
+0aprilanne0 lucky
Mark Guzewski (2 года назад)
It was actually years before I made the connection between my smelly pee and eating asparagus earlier. It used to freak me out a bit. Duh...
Gavin J (2 года назад)
maybe we who don't produce the smelly stuff in our urine fart it out instead, tell your interns to test my farts.
Jo Guth (2 года назад)
Yes, asparagus actually makes my urine smell good to me. In fact, I would eat it to produce that effect even if I didn't like asparagus so much. I happened to be in the bathroom when my hubby went after eating it, and his smelled good, too, though he himself dislikes the smell. I didn't see any other comments from those who like the smell, but I know I'm not alone. Am I? :/
tom8181 (2 года назад)
If people say their piss don't stink from it they lyin
Tj Taylor (2 года назад)
I put a whole bushel of asparagus into my toilet and it did not turn it into any form of perfume.
Patrick Mather (2 года назад)
Your facial reactions in this video, Hank.. Tis golden, and hilarious. ^^ Makes it alot more fun to watch a video about .. Asparagus Pee!
Samantha Barba (3 года назад)
jajajaja loved the way you explain things!!!!... interesting and funny.. fun way to learn new stuff!
BirdDana (3 года назад)
i knew a horse named Asparagus (gus)
MulletGamer (3 года назад)
May I just say.... Nice shirt
Mr GuyMM (3 года назад)
This makes me think that someday someone will develop pills that cover your excretion's foul smell with a selection of pleasant smells...  could call them Pootpourri Pills
Hirobian (3 года назад)
I honestly have no idea if I am a producer or smeller. I know for a fact my mother talked about this once (because geek family, yay) and she most definitely is a person who can smell it and produce it. She also confirmed that my father doesn't produce the smell and he also cannot smell it.  I find this fascinating, since my parents both seem to be the polar opposites in this gene mutation, perhaps I cannot smell it but do produce it. I will have to find out at some point. Unfortunately for me, I actually dislike asparagus so I never eat it. So to conduct the experiment...I'd have to confront eating something I don't like the taste of. :( ...... FOR SCIENCE!
Arieh Sochaczevski (3 года назад)
Was it really necessary to show a politically questionable map of Israel?  Without spinning off into the point, he could have said "Israel", or even better, just the name of the specific institution, without opening up the can of worms inherent in choosing a map of the area?
Kevin Pereira (3 года назад)
Why you got to hate on mint? You herbist!
username (3 года назад)
I heard, that "non-excretors" have special enzyme that breaks down the methanethiol
Rom Koppel (3 года назад)
Andres F (3 года назад)
3:42 - lol....Where do the compounds that aren't excreted go?
pejb83 (3 года назад)
This may have already been asked here but I'll ask anyways, has anyone ever had instances where their urine smells like coffee after drinking a lot of it throughout the day? I mean, sometimes when I take a piss, it is as if I'm brewing fresh coffee lol
ThePulsuhr (3 года назад)
THE MAP OF ISRAEL IS  WRONG !! Seriously, there must be be shown Palesina. Israel attacked  Palestina  and took the teretory  ILEGAL just by killing the poor Palestina  people :(  SchiShow  please  make the  map  right by showing the Palestina in the right area. israels area must be shown as  alot  less.
Dustin Rodriguez (3 года назад)
Wait a second... so people that cannot smell asparagus pee have a 'mutated' gene related to one of their scent receptors... so does that scent receptor pick up something different?  Can they smell something which 'smellers' can not?
Patrick Pesla (3 года назад)
I eat a lot of asparagus, and within a matter of minutes, asparagus pee. Lol.
iceCandyxx (3 года назад)
Hank is just amazing haha, thanks SciShow for explaining asparagus pee!
pinkpandamiranda (3 года назад)
I'm a non-excreter and a non-smeller. For a long time when I was a kid I had no idea what people were talking about when someone said they had asparagus pee. But I just brushed it off until this video.
Condor Boss (3 года назад)
I both excrete the asparagus compounds and can smell them. However, I also am allergic to the damn stuff to the extent that I will vomit if I eat more than a single spear. Needless to say, I avoid asparagus.
MadMonsterGaming (3 года назад)
Arianna Luncford (3 года назад)
Can you imagine being on the team that had to smell that many containers of urine? eww............. 
Timur Sultanov (3 года назад)
I can't smell apples... About asparagus, even though I do eat it, never thought about whether my urine smells...
citizen 3585 (3 года назад)
then I am sure that you either can't smell it in your urine or you aren't an 'excreter'...is that what it's called? It's smells strong, I don't like it, so you're lucky! 
AgreeOrDie (3 года назад)
When you eat more than 4 oranges, then your cum smells like orange zest in 5 hours.
Nophera (3 года назад)
Imagine the scientists sitting in the lab alone with their thoughts. "I can't believe I went to college for 8 years to sniff other people's piss"
blandantey (3 года назад)
wow, so much research on pee.
LadyPashta (3 года назад)
ROFL, Hank, funniest one so far!!
neyan (3 года назад)
I wouldn't know if I was an excreted or smeller or not because asparagus is gross as shit and belongs to hell
Exclusive Environmental Documentation (3 года назад)
Q:why do concussions accumulate?
Unstoppablism (3 года назад)
Oh scientists, smelling jars of pee for humanity. Rock on brave warriors!
Kasey Dietrich (3 года назад)
I should do this promising experimenting. :) lolz
wayne smith (3 года назад)
That means people smelled each other's pee
Ben Libal (3 года назад)
Monocot doesn't mean one leaf, it means one cotyledon.  A cotyledon is a mass of tissue that holds nutrients for the developing plant (like an egg sack for a baby bird), not an organ that supplies the plant with nutrients by photosynthesis.  Nitpicky, but an important difference (making the mistake in biology class means losing points).
David Puncikar (3 года назад)
Nicholas Haller (3 года назад)
Someone smelt 115 of peoples' pee?
Cathulu Tesla (3 года назад)
CoxTH (3 года назад)
Hm about the question where the compounds go I have two hypotheses: 1. The asparagusic acid simply isn't broken down in the body of non-excretors. (I haven't found any information on the smell of asparagusic acid itself, so I don't know about that one) 2. Non-excretors are able to break down the smelly compounds even further into odourless compounds.
Grito de Guerra (3 года назад)
please shorten these videos and be briefly, more precised and you'll have a shitload of viewers more than you already have. You're great and interesting, but you lack direction, go straight to the point.
jamarious Mcmahon (3 года назад)
but what if there body evolved to digest the chemicals   
Robbin Sandlin (3 года назад)
How about studying why I used to be able to smell asparagus in my urine, but now when I eat asparagus, I no longer smell it. 
DelberCrankToggle (3 года назад)
yes just yes
Lynn Heiple (3 года назад)
who wouldn't love that video??? now i know why my pee stinks after eating asparagus!  That dude is funny! I like him.
johnny knelsen (3 года назад)
00:40 ello

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