Why Some Parasites Are Actually GOOD (And Which Can Kill You)
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- Опубликовано: 14 май 2024
- When we think parasites, we often think of illness, disease, and discomfort. But did you know some of them can actually be helpful? Join Stefan Chin and learn all about them in a fun SciShow compilation all about the world of parasites!
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Original Episodes:
Human Parasites - • Terrifying Parasites I...
Brood Parasites - • Brood Parasites
Mind-controlling Parasites! - • Mind-controlling Paras...
Toxoplasmosis: How Parasites in Your Cat Can Infect Your Brain - • Toxoplasmosis: How Par...
Why Don't Humans Get Heartworm? (Spoiler: We Do) - • Why Don't Humans Get H...
Why You Might Want Parasitic Worms - • Why You Might Want Par...
No sir, this tapeworm is my antihistamine support animal
I hate this
Did you say this curing your prostate exam or what ?
Excuse me, this tapeworm is a service animal
Very good…Lol
Huh
Worst part of dealing with bedbugs is you are paranoid even years after you are free of them. Lord, there are days I still wanna prepare the vacuum and flip the mattress up just to do a sweep.
omg i know! When i moved into my apartment it was infested. I couldnt sleep and kept feeling imaginary itches. I sprayed sprayed and sprayed some more and finally got rid of them. almost a year later though i found one crawling out of the drain in my bathroom sink, very unusual for bed bugs. still freaked!
@@ryanblack2986 definately should spray again! Took us 2 years to rid ours we got from a couch we bought from a really nice home. Felt bites and looked and it was infested. That gave me ptsd for any used items lol. 2 damn years
It's been a year since I left the CCC housing that gave me bed bugs and I'm still waking up in cold sweats swatting imaginary bugs. Not that squashing them kills them. You have to crush them between your nails or dump caustic chemicals on them etc.
@@Skag_Sisyphus I have never felt more satisfied then when I found out I had won that war.
@@tallahasseepcs8329 it scared me a little knowing the sick pleasure i took watching them squirm in agony as they died sicking in caustic chemicals.
1:24 The “You are mostly bacteria” fact has since been corrected. You actually have about the same number of human cells and bacteria cells, but you get rid of most of that bacteria every time you defecate.
finally i thought i was tripping
Cmon scishow. Do better
I think remember Hank narrated a video correcting it...
@@nathanseals6009 it was 2012 hadn't been corrected yet
You get rid of about a third of the bacteria every time you poop
58,484 fears. . . "Good news is very unlikely a fish will swim up your urethra!" . . . 58,483 fears.
58484 if you like swimming in pounds or lakes
@@abdouaboud7490 58,483 if you're into that sort of thing
@@korioa 58484 if the fish is also into those sort of things
What's the point of counting fears? How could someone possibly be so fearful? I don't get it .. 😕
It was a joke
Just seeing 2012 Hank shows that the man was made for being a presenter. He is so natural at it. His little tics and speaking style haven't changed at all over the years.
What, you don't notice all the cuts?
If you enjoy his style, check out the Journey to the Microcosmos series. It's very natural
his cadence is a bit less 'drunk' now but still has plenty of character
Actually early Hank turned me off completely (not this presentation, but when he put on his ADHD persona.)
That's what made him unique
2012 Hank... wow that's quite the throwback
can we get a just hank?
You commented this two hours ago. Imagine how I feel now in the future.
@@monted91 no
i saw your comment and now want to see decade younger hank
its weird remembering seeing those old videos when they were new
Hank's little laugh as he goes, "We're our little biome!"
that was rlly adorable
( 1:54 )
Lmao
He is adorable:) love every video with hank in it :))
Oh, the worms part made me remember something very sad. I was watching a veterinarian show and owners came in with a very lethargic bearded dragon. Owners of any animal, be sure to get your pet checked regularly for parasites! (something gross follows)
.
.
.
.
The poor thing had so many worms in it that when the animal was sedated for examination, they started crawling out of its windpipe. Yeah, that animal did not make it.
😭 😰😭😱😭😫😭
How tf did those owners not notice it much earlier because we both know that a parasitic infection like that takes a long time to develop with plenty of signs and symptoms along the way.
@@peggedyourdad9560 Idk how familiar you are with reptiles but it can be incredibly difficult to read their body language and they rarely look like they're sick or in pain, even though they are. Obviously there are still signs and symptoms to look out for but they're easy to miss, especially for an inexperienced owner!
@@char1211 I’m decently familiar with keeping reptiles, I have a normal bp and 2 leopard geckos. They definitely don’t act like how you’d expect them to if they’re not well, but in my experience any sudden behavior change is pretty big sign that something’s not right. I think this where just being familiar with both the species and individual becomes especially important. I will admit though that I do still have to give my guys a good look-over every once in a while to check for issues, that’s actually how I caught the very early signs of a scale infection on my bp before it became to big to deal with at home (he’s fine now btw after about 2 weeks of nightly iodine baths). I still stand by what I said, if they actually cared to pay attention they would’ve noticed there was something up before that point.
@@peggedyourdad9560 Oh cool! I have a crested gecko myself, though I've only had him for a couple of months so you're way more experienced than me. I agree that they probably could've noticed the infection earlier but I also think it's unfair to assume they were neglectful
Since toxoplasma gondii infection correlates with an increase risk of depression and self-harm in humans, might it not cause the same in rats? So maybe infected rats become suicidal. It's not that they're suddenly cat-loving; they're probably like "just take me I don't care anymore".
Solid point
Parasites are evolutionary wizards. Their relationship with their hosts create a beautifully elliptical fitness back-and-forth.
It's worth pointing out about toxoplasmosis that the eggs shed in the faeces don't become infective for 1-5 days so fresh faeces isn't infective. It's microscopic faecal residue that might get on your cats paws and then gets shed wherever the cat goes that's infective.
Clean out the litter tray promptly, and wash your hands regularly, especially after gardening or playing outside.
I've heard that many of these cases might happen from people not washing their garden vegetables before eating or preparing them if they have a cat that goes outside.
You should also wash red meat and wash your hands after handling red meat…I was born with toxoplasmosis
And don't let your cat put their paw on your face. The cats around my house love doing that and we can't lay in peace without them coming up to us and putting their whole body over our faces.
My mom can't barely watch tv because her cat simply sits on her neck and stays there.
@@saritalevinthal3455 How did you get it diagnosed?
This is most likely for outdoor cats or indoor cats who eat raw meat or rodents.
Just accept that you're the host, & you have one helluva party inside!
@ayy lmao remind of that one episode of adventure time where a giant has an army of bears living and partying inside his tummy
@ayy lmao You just unlocked a memory
@@tyson6762 Same here.
Gives a whole new meaning to "Be a new host!"
This may not be the episode for me to watch while I'm eating....
I am watching while eating lol
as a rule i never eat while watching scishow
Or while being on the toilet
@@yeah8598 congratulations on having a stronger stomach than me
@@yeah8598 same lol
Hank: Worms, don’t google it. It’s gross 🤢
Me: Well…. Studying healthcare in tropical zone makes that inevitable for me 🤣🤣🤣🤣
What’s the worst one you have seen?
When i hear about helpful worms i have to think about that one Futurama episode where Fry got worms by eating a black tomato slice thinking he ate a chocolate cookie. The worms he got from it made him 100% healthy and even helped him grow some muscles. Back then i wanted those worms too.
Ya I really love that episode of Futurama, I think he got them from a burger. 😎👍
He got them from an "egg salad sandwich " from a vending machine inside a gas station bathroom
@@Hi_Im_Akward Yeah - the type of "egg" wasn't specified....
Yes sometimes when you eat unhealthy food you get it
They even made him heal wounds in seconds and trimmed his brain to make him smarter. I wouldn't mind worms if they made me superhuman.
At my last job my boss started getting colonics and was convinced she had parasites that would need multiple colonics… could you do an episode talking about the pseudoscience that goes into colonics and misdiagnosing normal changes in our poop as parasites?
Its hard to be under idiots like these... I wouldnt be able to do it for long
I think Professor Dave is the person you need to ask
fear of parasites that aren't there are used to promote sooo much pseudoscience, that example is one of many. the whole thing with using bleach to "cure autism", for example, is connected to that. Miracle Mineral Supplements and other similar companies and people claim that autism is caused by parasites and that their products can help you get rid of them. after you take them for a while (or, most commonly, give them to your child), you might see weird little things coming out in your poop, but those things are not worms, they're parts of your intestinal lining that is being damaged severely by ingesting a type of bleach. and more recently there's been Black Oxygen Organics claiming that you're full of parasites and that the way to make it better is to.... eat some soil. some super fancy and very expensive soil with certain special nutrients in it. or to put it in your bath or something like that, according to them. which seems less dangerous than taking bleach, but it's still bad.
Sounds like BOO 😅
Sounds interesting!
"These little b*stards" love Hank, absolute legend and my favourite 🤣😁
Surprised Hank didn't mention the Rat Lungworm. Probably the scariest parasite out there.
Imo Nigeria floweri or w.e is pretty scary, but I'd rather have that over rat lungworm
"lungworm" yep, definitely not googling that
I contracted toxoplasmosis when I was 11. It nearly blinded me in one eye - my vision in that eye is 20/200. I’ve sometimes wondered if I was left with any other behavioral changes.
What did you notice in terms of visual changes
Interesting tidbit I learned in bio class: in areas where botflies are common, cuckoo eggs don't have to be so similar to the host bird eggs. The reason is that cuckoo chicks really love botfly larvae, so they keep their stepsiblings from getting blinded by botflies. So the host parents have an incentive to keep them around. Of course, it's not a conscious choice, just instinct.
finaly! 1 good thing about cuckoo birds, i hate them slightly less now.
"Wouldn't you just love to spoon a cat?"
The forbidden spoons
So that Greys anatomy episode with the guy infecting himself with worms to treat his asthma was actually rooted in some real science
The only meds I treat my allergies and asthma with are pills and inhalers. No worms. EVER! 🤢😰
Shout out to This Podcast Will Kill You for covering each of the parasites mentioned by 2012 Hank! Great show. If you like this channel, you’ll love that podcast.
Giardia may have cured ny demographia. I was afflicted from age 13 till about 29, when I caught giardia. My most extreme form of demographia went away, then I was treated for giardiasis, and it never returned, while my sister was afflicted from 3 till her death at 47. Mine was so severe, vibrations made
my skin swell. You could write your name on me, and in minutes, it looked like The Exorcist. An ice cube would bring a wealt, while winter cold would make my extremities swell solid. A sunlamp would bring body wide wealts. I don't know if having giardia saved me from all that, but it seems likely, as this was all an Ig-E overreaction.
Ankle, anus, and abdomen, parasites are more viscerally unappealing
I have what I suspect to potentially be delusional parasitosis (or perhaps some form of parasite related health anxiety/ ocd) yet I find myself endlessly consuming like university level parasitology material bc I tell myself that knowledge is power (I should seriously stop) but thank you for the trigger warning ❤
Or maybe just maybe I do in fact have a parasitic infestation of some sort and all these years I've been correct
Haha jk... unless??
Unless😅
@@Destiny-ig2fs 👀🥺
Would you guys be able to do a video on ‘Dermatomyositis’? My wife is afflicted with this at 25, and while I’ve done my own research, I’d like to hear a more educated breakdown of the disease.
I dont want to scare or worry you but mt Aunt died from dermatomyositis in her early 40s. It took a long time for them to diagnose it because its so rare. I was only a kid then in the mid 90s, but I remember how swollen she was, especially her face. They had her on lots of Prednisone. Its a strange thing since it can go away completely or cause a lot of dis-ease.
@@ryanblack2986 yes, they have her on lots of steroids, she's not swollen but she does have rash and muscle weakness. Definitely deal with things day to day but I'm just trying to learn as much as I can about it.
Has nothing to do w parasites so worry not! It's a rare agressive type of inflammatory autoimmune disease that attacks primarily muscles and also has a characteristic red rash over the knuckles called gottrons papules as well as the eyelids and any extensor surfaces (elbow, knee ect) it is linked to a high-end risk of certain cancers as well. The cause of this is unknown. Hopefully ur wife is doing well!
@@laanaalove I am aware, at the time it was on my mind and thought I’d ask. She is doing okay at the moment just lots of medication. Some get the rash some get the muscle weakness, she got both. Overall much better now than when it began.
@@dillingerjackson39 I'm very glad to hear
There really aren't ten times more bacteria cells than you cells in, well, you.
This has been disproved times and times again.
The original cited research was based on mostly guts (and bacteria in guts) where the 10-1 ratio might very well be true, however in general its more like 50-50
Also, no parasite is capable (or fish for that matter) of swimming or flying or whatever in your urethra. This was an urban legend
Thank you. I was gonna post this
@@Annathroy Uh yeah, they literally said immediately after that new information was found since the 2012 video that showed it was incredibly unlikely for the fish to get in the urethra.
@@tron-8140 Because it's a compilation of themed videos from the channel's history. The rest of the video was still fine, and they stated immediately after that that one segment was wrong. Should people stop sharing Einstein's papers of relativity just because Hawking disproved like 2 statements in it?
@@Cr3zant They could have easily edited it out.
having been on a long-term course of extreme antibiotics, stomach bacteria is definitely important and it can be hard to eat or even keep food down without them.
aww yay!! 2012 Hank is just as fun to watch as 2021 Hank :D I love seeing presenters/artists at different times in their career, and I love earlier work just as much as later work, they all have their charms ;)
Yay!! Thank you for using "compilation" in the title again. I know it's probably unrelated to my previous comments but I feel very listened to. This is the best channel on youtube by far.
Those 4 categories Hank says are redundant. There should only be one. Parasites are all "freaky" stuff. I'm fascinated and horrified at the same time by them.
This is the compilation we didnt know we needed.
Just accept that you're the host, & you have one helluva party inside!
And another Compilation in the title! Thanks guys!
Yes, not always disclosed often eliciting the ire of the viewing public.
Love watching all these programs learn more and more everyday, thanks Hank for sharing and keeping us informed.☺
The poisons lured me in, the parasites got me hooked and I can't wait for the toxins to knock me out. Just subscribed and having so much fun! Why didn't the algorithm find you for me sooner?
I some how find it strange yet perfectly natural to see old hank, the way he appeared when I first started learning from him when I lived it Maine. I'm sitting here in Bozeman Montana ATM and wow ! Hanks come along way yet is still eer..was , in 2012 pretty frigging awesome
I Love and am Equally freaked out by parasites but I'm so facinated to learn and study all about them. I hope one day we learn how to help anyone infected by any given parasites that we currently have trouble treating a diagnosing.
I knew a lot of this but there were some parts I did not, so thanks, and especial thanks for all the effort and research to put this together in such a neat way. Kudos.
My career revolves around fecal microbiome transplants and their effects on melanoma! Love this video!!
They forgot the ultimate parasites: Embryos
The most horrific parasite story I think I’ve ever heard of was of a young man in Australia who( as a joke among his friends) was dared, or made a bet somewhat with his friend group one day that he would eat a garden snail or garden slug. Within a very short time he was infested with a parasite present and common in them that destroyed his brain. It was so senseless, mind-blowing and tragic…. It pays to pay attention to any pathways and orifices that lead into your body and be mindful of all microscopic or native things in nature.
Its called Rat Lungworm Disease. And the boy slipped into a coma from the brain eating amoeba I believe it was anyway he died a slow and painful death. Very tragic, my heart breaks to know it was so innocent yet so painful and ultimately fatal.
**jumps onto doctor’s table** Alright doc, *WORM ME*
Actually, Toxoplasmosis doesn't say to a rat, "Look at the beautiful kitty. Wouldn't you like to snuggle up to it? Don't be afraid, it's just a nice friendly cat". The parasite is much trickier than that. Rats know the scent of cat pee and will avoid places that smell of it. They can even sometimes smell whatever few drops remain on the cat's fur after it pees. Naturally they will run away from this scent which is one reason cats have to sneak up on rats and then pounce. However, toxo makes the rats LOVE the smell of cat pee and they will run towards it and even seek it our thereby giving the cat a nice tasty treat and continuing their life cycle. I don't know what category of parasitism this comes under but probably the mutualistic kind since both the cat and the toxo benefit from the arrangement.
Try dealing with a scabies outbreak in a health care facility. The paranoia is real!
my mom experienced that nightmare in a nursing home. of course, she gets discharged and brings the buggers home.
@@romeoslover817 aahh damn
Day 58 of asking for the return of Scishow Quizshow
With you, brother
Ah Toxoplasmosis! The reason why the internet is obsessed with cats!
Toxoplasma Gondii: "Pet them filthy humans!"
Tapeworms are horrid. I have 2 cats and they've both had tapeworm at least 2 times. Though, we thankfully found out almost right away and were able to get rid of them with just some tapeworm tablet medicine
my first thought hearing about the cat parasite possibly influencing our love for them was “aw that’s fine they’re cute I’ll let them, as a treat”. maybe those scientists really are onto something
This make me glad that the ivermectin craze is happing, at least they won't be wormy.
It works for bedbugs, if someone takes the human form at human doseage, which is 0.2mg per ten pounds bodyweight per day. I used it a few years ago, 3mg every 5 days, for three months, while heat treating the bed, and got rid of them, after a miserable 7 year infestation. My doctor was skeptical, but this _is_ a parasite, and I had tried literally everything on the market, except throwing everything away and burning my house down. Meanwhile, covidiots are their own parasites. I'm fully vaxxed, about to get my booster, masked when necessary, because I'm not an a**hole.
@@injunsun Diatomaceous earth is the solution to bed bugs.
The only cure is holy fire to burn the infidels
@@injunsun wait until they start ingesting parasites that allegedly eat viruses 😂
@@SkDiggy Shiz... I'm about ready to ingest a damn tapeworm, just to get rid of these last phokin' 15 pounds (a stone). And when I'm back fitting into my 29" waist Levi's 501s, I know the precise medicine to take to shi.... er... cause that thing to leave my bowels. Lol!
"We're our own biome!" He sounds so happy :)
I loved seeing Hank talk about creepy crawlers again! So funny, but yet, true!
Can we appreciate the code word warning mamas? It’s brilliant. 🤔 These mama’s know their kids.
What
Thank you guys, today I learned a great deal of knowledge which I could easily live without, thanks for the nightmares, but joking aside, glad to see such a long episode, great video.
This is the best friendly advice, yet!
14:56 Feeling my eye brows creep upwards on my head as my eyes widen and my mouth expels air in the sound of a drawn out "no waaaayy" even as laughter starts bubbling up from my midsection, then 15:02 comes around and everything is just horrible again.
3:29 "It's not really affecting you in any way..."
Unless it turns out to be true that such follicular mites play an important role in an allergy that can be causing rosacea flare-ups in certain humans, causing social ridicule and borderline persecution, in communities unfamiliar with this condition...
I can tell you from experience that Toxoplasmosis can affect humans. I know because I had Toxoplasmosis in my mother's womb every time she ate raw hamburger meat in the form of steak tartare. She wasn't affected but my retinas wound up severely scarred because of it.
I only have one functional eye that is nearsighted, and the other eye is like looking through a keyhole sideways so not usable.
I've heard about other people who were completely blind due to Toxoplasmosis so I consider myself fortunate to have what sight I do.
Never take what you have for granted. It's too easy to lose those things. God bless you all. 🙏♥️
Thanks for doing the thing
This was a great choice for an educational breakfast video. Unfortunately I didn’t get too far through my breakfast before losing my appetite and being convinced I didn’t cook the meat well enough.
category 5: relatives
No, they're category 6, category 5 are housemates!
Actually, that parasite that makes rats become attracted to cats could also help to explain cat hoarding.
this is what I want to know too, a missed opportunity by the toxoplasmosis study, they could have asked do you have/how many cats
The only way to properly test it would to infect someone with the parasite and then detrmine if it makes them like cats more. Very unlikely to happen.
@@originalbillyspeed1 another option could be to test someone who is already a cat hoarder and try and eliminate the parasites from their system and then see if they still have an interest in hoarding cats.
@@Dogtroll That wouldn't necessarily be conclusive. It's possible the parasite could cause permanent changes.
@@originalbillyspeed1 well ethically speaking if it's possible to get rid of the parasites then it might be more appropriate to infect someone with them see if it has an effect then cure them. Also, I was thinking that you might have to take into account relativity meaning if a person has never shown any interest in cats they're not likely to become a cat hoarder but they might be more likely to pet their neighbors cat, whereas if a person started out being fond of cats they could possibly be the ones that wind up being cat hoarders.
I just had a dream about scishow lol so….parasitic worms it is!!! Love what you guys do!
Thanks this is just what I needed...
5:16 ''maRlaria': whaaaat??! (Being pedantic here just to distract myself from all the information contained herein, plus all the creatures living rent-free in me.)
This is going to fuel my germaphobia! I already wash my hands 100 times a day, stay away from all animals, and every time my face itches I suspect it's face mites... I did not need to know all this info, but thanks anyway!
Thanks for sharing.
Yes ! it going on one month that I got rid of the three parasite all the wanted it place to live, beer, smokes , food and somebody to pay all bills. My life is moving forward with out them.
Thanks guys! I watch Sci show daily 😊
"Parasite!?! Apologize!!"-Venom
"I am a symbiont"
Very Eeeeuuu, but ALSO very informative!
Thanks! I'll be scratching myself for the whole week.
That thing about the candiru is unconfirmed. There was only one case of that happening and that case is very unreliable.
Correct
Local people and DOCTORS confirmed.
I'm surprised the ten to one ratio of microorganisms and human cells was left in. I recall it being talked about not too long ago and how that figure has been blown out of proportion from a faulty report or something.
Yea, it seems ridiculous that there are 10 times more of them and yet most of them are in our gut.
Its funny to heaar Hank talking about Urethra ... has kind of a King of the Hill vibe in it :D
9:54 ah yes, the wasp and catfish-shaped cuckoo birds, the rarest of species~ 💖
(Yes I know he was comparing them, but it sounds hilarious out of context 😂)
The parasite on the thumbnail needs googly eyes. 👀
I was about to mention the unlikeliness of the candiru mith
This happened when we first discovered it in the 1971. And it gave us a better way to understand about our bodies and minds.😱😍
To host a SciShow, I laughed out loud!!
This was a great video to watch while eating dinner.
I hope you were eating cat poop
God I hate worms. I’m more afraid of stuff that I can’t see, especially those that live inside you
They didn't even get into the fungi that take over brains, forcing some animals to surrender themselves to predators. That's usually ants, but the X-Files used that trope, and it was scary af.
Thanks for including "compilation" in the title
Holy cow! this is the first time I've sen "current" Hank. I recognized the voice and style...but wow he looks different
Is anyone else really bothered by Hank keep calling bacteria animals? They're not even eukaryotes.
27:55 Helminths sound like hell mints. Either way, neither seem to be good for the body.
13:00 interesting fun fact for media enjoyers: Chainsaw Man (popular anime, highly recommend you check it or its manga out if even if you don't normally like anime) uses one of these snails for symbolism in its opening theme sequence!
YESSS! I had that happened when my synodontis catfish bred and my Copadichromis borleyi mouth brood them and when they came out I was scratching my head wondering if I had just created the weirdest hybrid fish 🤣🤣🤣
Okay, something that really bothers me here: parasitism is *specifically* when a symbiotic organism is harmful to its host. Parasites by definition cannot be neutral or beneficial for the host. Don't use the word "parasite" for commensalistic or mutualistic symbiotes!
I miss 2012 Hank
Fun a fact that's absolutely unrelated to this video: I used to watch a lot of sci show back at a very depressing time of my life and so now when I hear the intro I get to feel that same sadness as before. So weird, why is that? XD
Sounds like a classic Pavlovian response.
This is making my brain crawl
I wonder if they tested for t. gondii in fossilized saber tooth tiger poop to see if we were the ancient rats to those big cats in the life cycle of the parasite🤔
😆😆😆😆😆😆😆
I think I'm gonna begin a ritual for thanking god for putting me in New Zealand where most of this nonsense doesn't affect me.
From my vantage point as an American, I'd say you probably have A LOT of things to be thankful for based on your location.
@@Kaitybardot Seems fair.
As an American, what problems plague you, miss? I am curious.
Just about to eat my breakfast and clicked on this video...
As always my timing is just weird!!
Nice outro :)
I know a lot of parasites
I was one in my early 20s
Thank god for Ivermectin!
It works for bedbugs, when properly prescribed and taken, along with heat treating your bed.
You could also talk about the Cysticercus that makes cysts in your brain if you eat contaminated pig meat (very common in developping countries).
Thanks for the great informative information.