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A Brain Parasite Might Be Making Us Angrier - Newsy

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Transcript: More and more studies are hinting that our brains might not be completely our own. The parasite Toxoplasma gondii, Toxo for short, may be changing human behavior — perhaps even making us angrier and more aggressive. Toxo is one of those frightening parasites capable of controlling its hosts. It reproduces in the stomachs of cats, and it's always trying to get back inside one. So when an animal, usually a mouse or rat, becomes infected through contact with cat poop, the parasite gets into the rodent's brain and literally rewires it. Basically, it makes its host fall in love with cats so it'll go find one and get eaten. Humans can contract the parasite, too, through eating unwashed vegetables or undercooked meat. And, obviously, through cat poop. But while it can pose problems for pregnant women or people with weakened immune systems, it's generally not considered a threat to human health. That's lucky because Toxo is incredibly common. Around a third of people in the world and more than 1 in 5 in the U.S. are infected, and the vast majority never suffer any ill effects. At least, that's what we thought. Over the past decade, studies have linked Toxo to higher rates of schizophrenia, bipolar disorder, depression, suicide attempts, risk taking, impulsiveness and now, aggression. A recent study found people with the parasite score higher on anger and aggression tests, and people with anger disorders are twice as likely to have the parasite than you'd expect from chance alone. What does all of this mean? Well, it's too early to say. None of the studies so far are considered proof that Toxo is driving changes in human behavior. Its effects might be overhyped due to its creepiness. But because it's so common, if infection really does raise the risk of mental illness even slightly, that could translate to tens of millions of cases. Sources: Videoblocks https://www.videoblocks.com/video/radiologist-watching-monitors-of-brain-scan-med_hospital_radiologist_002/ EurekAlert! http://www.eurekalert.org/multimedia/pub/111460.php Videoblocks https://www.videoblocks.com/video/large-crowd-at-grand-central-station-4/ Wikimedia Commons https://commons.wikimedia.org/wiki/File:Toxoplasma_gondii.jpg Videoblocks https://www.videoblocks.com/video/germany-cat-sitting-in-grass/ Wikimedia Commons https://commons.wikimedia.org/wiki/File:Toxoplasma_gondii_tissue_cyst_in_mouse_brain.jpg EurekAlert! http://www.eurekalert.org/multimedia/pub/61855.php?from=249032 Videoblocks https://www.videoblocks.com/video/fruits-and-vegetables-at-street-market-in-romania/ Videoblocks https://www.videoblocks.com/video/cat-eating-a-mouse-in-the-grass/ Videoblocks https://www.videoblocks.com/video/moving-crowd-silhouettes/ CBS http://www.cbsnews.com/news/vancouver-embarrassed-over-post-game-rioting/ The Journal of Clinical Psychiatry http://dx.doi.org/10.4088/JCP.14m09621 Wikimedia Commons https://commons.wikimedia.org/wiki/File:Toxoplasmosis_-_cropped_-_very_high_mag.jpg Wikimedia Commons https://commons.wikimedia.org/wiki/File:U_fibres_big.JPG ------------------------------------- Newsy is your source for concise, unbiased video news and analysis covering the top stories from around the world. With persistent curiosity and no agenda, we strive to fuel meaningful conversations by highlighting multiple sides of every story. Newsy delivers the news and perspective you need without the hype and bias common to many news sources. See more at http://www.newsy.com/ Like Newsy on Facebook: http://www.facebook.com/newsyvideos/
Категория: Наука и техника
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Текстовые комментарии (42)
adfad (1 месяц назад)
people are looking for evil aliens? we've got em in our brain already
Agusta Sister (2 месяца назад)
Explains the lext totally...do u know 92 percent of antifa own two or more cats...no questions were asked about living with say moms cats.. And.why.u ALWAYS.SEE CRAZY VAT OWMRRS.ARE HELLARY RALLYS
Stephanie Yelekci (3 месяца назад)
The truth is humans have many parasites on our skin, in the intestinal tract, in the nasal cavity sorry to say we are just animals too.
Spy_Prototype_96.1.5-B HD (3 месяца назад)
I thought it did the opposite since it rose dopamine and reduced fear.
Jo DeLong (3 месяца назад)
How do they get there? Ets?
Duane Locsin (3 месяца назад)
That’s another hit to the idea that we think we have ‘free will’ You just find out, your brain is simply a host to other organisms that manipulates, effects hormones, adrenaline and other processes that effect your behavior. To what lengths is it subconscious and you’re not aware ought to worry you. Who can say there are not extremely more powerful strains, that have evolved for millions of years that could overwhelm your bodies defenses like other viruses and bacteria?
superashgamer Fornite (3 месяца назад)
NOW I HATE CATS!!!!😡😡😡😡😡😡😡
Mickey The maltipoo (5 месяцев назад)
Two years later nothing has changed no one else is speaking about this. Humanity is doomed
TS C (5 месяцев назад)
It's too bad members of the US Federal government aren't more aware of this problem. Solving it could reduce wreckless driving and violent conflict such as school shootings. A viable vaccine could save countless lives, prevent a large percentage of mental illness and protect everyone's feline companions. Pharmaceutical companies could make billions by preventing the many horrible things caused by T. gondii as opposed to marketing ineffective medications to treat chronic conditions.
Spy_Prototype_96.1.5-B HD (3 месяца назад)
No, it won't stop school shootings, but it will definitely stop more car accidents since toxoplasmosis is also said to reduce response times.
Spazer Dazer (7 месяцев назад)
Clearly we should just get doctors to play Higurashi
garyha (9 месяцев назад)
The most accurate video on Toxoplasma that I've seen.
MsNooneinparticular (10 месяцев назад)
Would be nice if psychiatry took things like this into consideration instead of JUST focusing on neurotransmitters & emotions. Head trauma, infections, inflammation & many other biological processes can contribute to mental illness but are largely ignored.
garyha (9 месяцев назад)
It's right in front of their noses. Toxo eats GABA, the brain's inhibitory neurotransmitter. My phone even knows gaba, auto-corrects to all caps. It's like, psychiatry 101. The fact they ignore T. Gondii is spooky. Unless they have it too.
fushapanther (1 год назад)
How f!!! do you kill it
Chris Courtney (1 год назад)
this may explain crazy cat lady's.
Stephanie Yelekci (3 месяца назад)
I wear gloves when i change the cat litter never touch the feces
Kelly J (8 месяцев назад)
Chris Courtney It's not only in cats tho. The turn crazy cat lady came about because they have so many cats.
Trumble Research (1 год назад)
Garlic is a good expeller of parasites and the like. Apparently the liberals have toxo in their tofu
Primal 420 (1 год назад)
Its not only involved with cats, its everywhere for example chickens will eat the same things as mice.
Brian Vormann (1 год назад)
That dude has Freaky ears
Dawn E (1 год назад)
A cat is only infectious for 2 weeks. Other sources are much more likely.
Kurt Rencel Osana (2 года назад)
I kill cats, no matter if I'm serious or not. You cat lovers enjoy raging at me.
Kelly J (8 месяцев назад)
You have problems. Get help.
MsNooneinparticular (10 месяцев назад)
I hope you're trolling. Killing innocent animals is a crime & you're a psychopath if you do it.
Uzair A (2 года назад)
Is this how we become slaves to cats?
El Salvador (2 года назад)
I believe everything I hear ...
Meek Peace (2 года назад)
What the hell are these sickos doing with cats to contract this!
garyha (9 месяцев назад)
"Colleagues at John's Hopkins University have estimated that every square foot of soil in the United States contains from 1 to 400 oocysts" We're doomed.
MsNooneinparticular (10 месяцев назад)
Oh, I dunno. "Sick" stuff like changing litter boxes or simply living with cats indoors who walk across surfaces after stepping in their litter box... People don't realize how easy it is to ingest feces. Human feces is on nearly every surface in public places. It's how norovirus & other stomach bugs are spread. Those 'wash your hands' signs aren't just a fun suggestion. If you live with cats, you're bound to come in contact with their feces & urine at some point....even if it's only microscopic amounts. Same with most other animals.
vary soft kitter eating sppagoni (1 год назад)
coming in contact with their shit that's what they're doing
You Don't Say? (2 года назад)
i eat cat shit i think i might have this
baashdi hobstocking (10 месяцев назад)
straight from the tap or the box? if from the box, at the very least use chop sticks, we must remain civil.
MsNooneinparticular (10 месяцев назад)
1/3rd of the human population has it, so you're not alone.
Joelleen Beangh (11 месяцев назад)
it is serious you will get atzhimer and poo in you pants when old. no fun
Joelleen Beangh (1 год назад)
me too
chow mein (2 года назад)
I've been telling people about this
garyha (9 месяцев назад)
Me too. I studied it casually for about a year, via google alert.
Mr Blue Lamp (2 года назад)
ok scare the crap out of us with out telling us what to do about it
Josh (2 года назад)
+Mr Blue Lamp You cant, Once something is is the brain there is no way to get it out.
fiscalmist67 (2 года назад)
that explains it
Jmack1lla (2 года назад)
ive been really pissed off recently with the elections going on

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