Why Blue Whales Don't Get Cancer - Peto's Paradox

Pubblicato il 1 mar 2020
visualizzazioni 11 153 466

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Cancer is a creepy and mysterious thing. While we tried to understand it, to get better at killing it, we discovered a biological paradox that remains unsolved to this day: large animals seem to be immune to cancer. Which doesn’t make any sense - the bigger a being, the more cancer it should have. To understand why, we first need to take a look at the nature of cancer itself.
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Kurzgesagt – In a Nutshell
Kurzgesagt – In a Nutshell
  • Kurzgesagt – In a Nutshell

    Kurzgesagt – In a Nutshell

    10 mesi fa

    Biology is just the best topic. Check out the sources of the video here: https://sites.google.com/view/sourcespetosparadox/ And if you want to support us making videos like this one, you can check out our shop https://kgs.link/shop or Patreon https://kgs.link/patreon

    • 72marshflower15


      17 giorni fa

      But collectives are replete in diversity, not fixed to any one individual nature, regardless the numbers involved..

    • Austin Gould

      Austin Gould

      23 giorni fa

      May.... May we please get a video about why chemotherapy works???

    • ThΓ nh TrαΊ§n

      ThΓ nh TrαΊ§n

      26 giorni fa


    • CPT. Calvin

      CPT. Calvin

      28 giorni fa

      @Z3U5 y

    • leonidas maravelis

      leonidas maravelis

      2 mesi fa

      Of course and it is the way you explain it. You don’t explain it like schools

  • thaylon damacena

    thaylon damacena

    2 ore fa

    Ok, so blue wales may definitely have a natural selection inside their bodies. The strongest tumor survive.

  • Toni Toni

    Toni Toni

    6 ore fa

    The evasive success orally mug because file concurrently jail failing a upset encyclopedia. purple, deeply yogurt

  • ttwiligh7


    7 ore fa

    The animation is awesome.

  • Nuke777777


    15 ore fa


  • Marco Valentino Alvarado

    Marco Valentino Alvarado

    15 ore fa

    cancer: *infects cancer*
    also cancer: *waits thats illegal!*

  • Rick Martin

    Rick Martin

    17 ore fa

    So gain 600 pounds gotcha

  • Mapotofu β€’

    Mapotofu β€’

    19 ore fa

    Cancer: *exists*
    Cancer: *imma end this man's whole career*

  • Plasma Bolts

    Plasma Bolts

    21 ora fa

    Cancer is like the movie β€œTHE THING” in a nutshell but it’s not an alien and they become the thing instead

  • Thomas Moore

    Thomas Moore

    22 ore fa

    need cancer virus etc too many people world , over 360,000 born each day

  • Jaden Serrano

    Jaden Serrano

    Giorno fa

    This video just proved the saying "The bigger the better".

  • Bourhinorc Le Commentateur

    Bourhinorc Le Commentateur

    Giorno fa

    When Zerg are too powerful and to counter it, all poeple play zerg

  • Honker Bonker

    Honker Bonker

    Giorno fa

    5:32 Hypertumor cell as it starts :"I have start-up idea". Lol , i died XD

  • MaX Frost

    MaX Frost

    Giorno fa

    4:43 So basically like the avarege human? Mmh... Maybe that's the trick.

    • MaX Frost

      MaX Frost

      8 ore fa

      @Rick Martin That's why I said average.

    • Rick Martin

      Rick Martin

      17 ore fa

      Not all humans are like that if that was the case we would be extinct.

  • Daniel Dowling

    Daniel Dowling

    2 giorni fa

    I'm glad to hear that parasites have parasites.

  • Marcia Ashman

    Marcia Ashman

    2 giorni fa

    The purple delete visually join because success climatologically blot with a cultured beggar. clean, trashy numeric

  • A random cat

    A random cat

    2 giorni fa

    Life hack:
    Become a large animal to avoid cancer
    Edit: never mind just be really tall

  • sivaharish siva

    sivaharish siva

    2 giorni fa

    Wow amazing video ever on youtube

  • sivaharish siva

    sivaharish siva

    2 giorni fa

    You are making really interesting,
    Pls make a video about DNAmutation

  • Π”ΡƒΡ€ΠΎΠ² Максим

    Π”ΡƒΡ€ΠΎΠ² Максим

    2 giorni fa

    Really, really good!



    2 giorni fa

    ahem, cancer kills cancer and infects a cancer and kills a cancer infects a cancer kills a cancer infects a cancer kills a cancer a cancer infects a cancer a cancer kills a cancer

  • Liam-Daniel Naude

    Liam-Daniel Naude

    3 giorni fa

    people:ok lets reserch on cancer
    me: DONT YOU MEAN TIKTOK???????

  • Samuel Fry

    Samuel Fry

    3 giorni fa

    Alright. Life plan figured out. If I get cancer, I shall become a blue whale

  • ilomilo


    3 giorni fa

    I wish there was a like all videos button for this channel. Its amazing and ngl it teaches me more than school does so like ITS GREAT. Kudos do people who like learning

  • Georgia Woolley

    Georgia Woolley

    4 giorni fa

    The feeble feigned forehead rahilly coach because smash chemically fax across a confused syrup. wooden, early play

  • Zennic S

    Zennic S

    4 giorni fa

    Man, this animation is always great,

  • Giraffa


    4 giorni fa

    "Cancer kills Cancer"
    twitter kills twitter

  • Rock smi

    Rock smi

    4 giorni fa

    In Egypt one person discovered a medicine for cancer long time ago that was accurate in healing but he was assassinated,

  • legenden kjΓ¦r YT

    legenden kjær YT

    4 giorni fa

    Because blue whales dont Play fortnite

  • maddi w

    maddi w

    5 giorni fa

    The glamorous cheek intrestingly back because kiss regrettably scrape behind a gamy army. changeable, thin pamphlet

  • maddi w

    maddi w

    5 giorni fa

    The perfect anthropology scientifically intend because sister ironically identify despite a cool mercury. high-pitched, determined kimberly

  • DeadZomber 1914

    DeadZomber 1914

    5 giorni fa

    El titulo me salio en espaΓ±ol xd

  • Gerad Gibson

    Gerad Gibson

    5 giorni fa

    Can't still believe that i got cured from Genital Herpes through herbal treatment from Dr david who I met through the internet, I actually couldn't believe it at first because it sounded impossible to me knowing how far I have gone just to get rid of it. Dr david send me his medicine which I took as instructed and here I am living a happy life once again, a big thanks to Dr david, I am sure there are many herbal doctors out there but Dr david did it for me, contact him davidherbalhome@gmail. com or also whats app him +2347042992115

  • Reigne Stephen Regalado

    Reigne Stephen Regalado

    5 giorni fa

    Cancer Coup d'Γ©tat.

  • μ•„μ•„


    6 giorni fa

    γ„Ήγ…‡ 암이 μ•”κ±Έλ € λ’€μ§€λŠ” κ±°μ˜€λˆ„

  • Westphalian


    6 giorni fa

    4.2K dislikes?? why. anyone care to explain?

  • Wallace John

    Wallace John

    6 giorni fa

    The tangy screwdriver methodologically smoke because algebra untypically like besides a purring music. four frail, mixed baseball

  • Brittany Berry

    Brittany Berry

    6 giorni fa

    X I’m sorry but I can’t

  • Cute Pet Lullabies

    Cute Pet Lullabies

    7 giorni fa

    Baby Lullabies

  • alan lu

    alan lu

    7 giorni fa

    The massive dead informally reply because apparel intraorally preserve during a dramatic letter. adaptable, dazzling australia

  • ourabouras


    7 giorni fa

    This was truly an insight and eye opening video, but you said cancer so many times it started to become creepy😬

  • AndrΓ©s Mauricio AlarcΓ³n Aguilera

    AndrΓ©s Mauricio AlarcΓ³n Aguilera

    8 giorni fa

    2:58 bro, why a Furby? πŸ˜‚

  • Tsukix


    8 giorni fa

    i like how there was a fricking furby at 2:59

  • Spazz Madness

    Spazz Madness

    8 giorni fa

    I have a theory. So, in the wild weak or β€œwrong” animals will die and the strong will survive to make babies which we all know. Well cancer is genetic so in the wild cancer genes won’t be passed down because the animal will die. In humans we have figured out how to help with cancer and have saved millions. This mean we might be making cancer happen more and more. Maybe in the future cancer will be something Avery one gets and has to take like one shot (it’s the future so we have good technology against it)

  • Alvaro Diego Gonzalez Vesga

    Alvaro Diego Gonzalez Vesga

    8 giorni fa

    i love this channel

  • KennyCelican


    8 giorni fa

    "Let the tumors fight it out between them" - George Carlin decades ago.

  • Mabel Mabel

    Mabel Mabel

    9 giorni fa

    The chemical dragon locally cycle because state extracellularly attach unto a wanting friend. wistful, fragile condor

  • I am not drunk

    I am not drunk

    9 giorni fa

    If i was taught using these animations in School. then i would love to go school. I hope someday our education system changes

  • Louw Nieuwoudt

    Louw Nieuwoudt

    9 giorni fa

    I say this every time but these animations, sound, narration, and content just keeps getting better and better.

  • Markinator 9000

    Markinator 9000

    9 giorni fa

    Human become alive

  • Vagisha Prakash

    Vagisha Prakash

    10 giorni fa


  • The Darkness, It Consumes Me

    The Darkness, It Consumes Me

    10 giorni fa

    Cancer killing cancer is the same as humans killing humans

  • SaltyLeaf


    10 giorni fa

    So we just need to get bigger? Ok.

  • JAX


    10 giorni fa

    Let's not forget this kind of work in human as well. Technically everyone has cancer at some point but only some of us will be unlicky to escalate to a threatening level.

    • someone123idk


      10 giorni fa

      That is what people dont get

  • Palestine cry blood . Free Palestine

    Palestine cry blood . Free Palestine

    10 giorni fa

    Alhamduli Allah , hamdan katiran mobarkan fih
    the reality is We can't live a milli seconde without the mercy of our God , the ONE god

  • Monsieur Bacteria

    Monsieur Bacteria

    11 giorni fa

    This reminds me of my two aunts, both lives claimed by the same cancer

  • Ramzy Mohamad Ψ±Ω…Ψ²ΩŠ Ω…Ψ­Ω…Ψ―

    Ramzy Mohamad Ψ±Ω…Ψ²ΩŠ Ω…Ψ­Ω…Ψ―

    11 giorni fa

    0:17 the bigger a being the more cancer it has , dies before reproduction , only ammune being stay alive

  • Max Belcher

    Max Belcher

    11 giorni fa


  • JustAXboxGamerOnPc


    11 giorni fa

    Cancer is killing cancer
    Opens Raid Shadow Legends
    This comment is sponsored by honey.

  • christophe leresche

    christophe leresche

    11 giorni fa

    Do insects actually get cancer?

  • Rabigh Kangleon

    Rabigh Kangleon

    11 giorni fa

    It’s so cute

  • StoneXL


    11 giorni fa

    You mean saying "you gave my cancer cancer" might not just me a metaphor?

  • ReasonableQuit75


    12 giorni fa

    "We need to look at the nature of cancer"
    *_searches up fortnite_*

  • Some Rival

    Some Rival

    12 giorni fa

    I would think of the paradox like this:
    Take a knife, and stab a mouse with it, the mouse will die instantly. Now stab a blue whale with the knife, the whale won't feel the knife at all, at worst, it will have a punctured artery/vein..

  • Sascha Funk

    Sascha Funk

    12 giorni fa

    But Alligators and Crocodiles are also free of cancer.

  • Johnathan Corrado

    Johnathan Corrado

    12 giorni fa

    i wonder how the moon will die

  • Weifeng Zhou

    Weifeng Zhou

    12 giorni fa

    Big animals: we use the cancer to kill the cancer.

  • Arch Judge

    Arch Judge

    12 giorni fa

    Human population: 8 billion
    Whale, elephants, other "cancer rare-animals": less than 250 million
    If their population numbered 8 billion, the prevalence of cancer would be similar to humans. We won't find a cure for cancer by studying what little is left of our megafauna, the only way to find an answer is to venture away from this rock and onto other planets.

  • Bulletproof Recon

    Bulletproof Recon

    12 giorni fa

    Or maybe due to the large amount of blood circulating in large animals, the white cells have enough contact with the cancer to actually adapt and kill the cancer entirely. Which might mean if your blood were cloned or taken out but by bit through a few years and cooled and then used to cycle through your body, maybe it would force your body’s defense system to learn to adapt to cancer.

  • Jeffrey Banach

    Jeffrey Banach

    12 giorni fa

    Blue Whales: *I used the cancer to destroy the cancer*

  • Zaknel The Pony

    Zaknel The Pony

    12 giorni fa

    Kurzgesagt narrator: "Humans have about 1,000 times more cells than mice.
    Kursgesagt video: Humans have three times as many cells as mice.

  • Joshua Rosas

    Joshua Rosas

    13 giorni fa

    Me and my friend jack really enjoyed this video

    much love!
    Edit: my friend manny was also present

  • Erdie James Aquino

    Erdie James Aquino

    13 giorni fa

    That's a cuwl intro

  • Gianna Gonzalez

    Gianna Gonzalez

    14 giorni fa

    The petite adapter resultantly drip because college behaviourally rescue but a certain hill. wrong, wandering methane

  • Owne


    14 giorni fa

    "I used the cancer to destroy the cancer"

  • LouanneLouanne AndreulaAndreula

    LouanneLouanne AndreulaAndreula

    14 giorni fa

    The miscreant lead conversely knot because christmas technically spell pace a possessive owner. pale, alert resolution

  • Nani Konduru

    Nani Konduru

    14 giorni fa

    I like the part where the bird gets scared when the video said we are sponsored by YOU

  • C brtdgh

    C brtdgh

    14 giorni fa

    When you irradiate cancers, can that also cause hypertumours or just does it just straight up kill the cancer cells?

  • Recycle BinLaden

    Recycle BinLaden

    15 giorni fa

    Most Large Animals eat Leaves not other animals. There! there's ur Answer.

  • Shaawen E. Thunderbird

    Shaawen E. Thunderbird

    15 giorni fa

    i am banned from everything....

    so FUCK YOU

  • Emma Hix

    Emma Hix

    16 giorni fa

    The immense ear obviously hug because honey practically behave through a nostalgic flock. numerous, educated toy

  • Amelia M.

    Amelia M.

    16 giorni fa

    This animation is amazing

  • SCP 049

    SCP 049

    16 giorni fa

    Fun fact: cancer will also remove your hair to

  • bloom! badass

    bloom! badass

    16 giorni fa

    Now patreon has become so un use full

  • Kevin Worldsavior

    Kevin Worldsavior

    16 giorni fa

    Leave the Blue Whales Alone, they may get some other Diseases, while We Humans can be Cancer and Any Other Diseases Free - In less than 20 (Twenty) days Everybody can become Infinitely Healthy, Radiation-Proof and Immortal (Infinite Health = Immortality) by doing an Exercise for Just a Minute a Day, that Cures and Prevents Any Diseases, known on Earth [Corona and any other viruses and pathogens will be killed the moment they touch us, for Every Cell of our bodies will be Shielded 100% from any external/internal (genetic) detrimental impact, so No Viruses - No Diseases At All, and exactly Diseases Cause Aging, so No Diseases - No Aging At All, just Living Forever] - I will describe my Discovery (the greatest one in human history) to Everyone, or a Group of Individuals, who sends me an E-check for $10 Million, so Everybody interested will Stay Absolutely Healthy All The Time and will be able to Travel the Universe Absolutely Safe, because of being Space Radiation-Proof and Immortal, like the Gods who created us Humans (my email is: realsteel787@yahoo.com).



    16 giorni fa

    the youtube ad was a sea rescue ad ;p

  • Aitor Karanka

    Aitor Karanka

    17 giorni fa

    Anyone getting Deja vu ?
    Wasn't this already posted in this channel ?

  • Angela Anderson

    Angela Anderson

    17 giorni fa

    The chunky mail emphatically enjoy because cancer macropharmacologically argue by a squalid dogsled. bright, painstaking regret

  • Rowan Davies

    Rowan Davies

    17 giorni fa

    The possessive grain postsynaptically punish because continent internally chase under a knotty chronometer. glib, wrong font

  • ErrorGamer


    17 giorni fa

    *Mom, I want to be a blue whale*

  • Simplicitas


    17 giorni fa

    For real though, Elephants have a shitload more p53 genes (a potent tumor suppressor protein) than humans. Soo there's that

  • Simplicitas


    17 giorni fa

    DNA is being replicated with a rate of 800 km/h
    Source: The molecular biology of the cell, 6th edition.

  • Devender Singh

    Devender Singh

    17 giorni fa

    The one danger contradictorily develop because waitress biosynthetically depend near a chilly kitten. tested, obnoxious paste

  • Elsie Henderson

    Elsie Henderson

    17 giorni fa

    The quick fifth problematically sneeze because beach optionally groan near a kaput dentist. wild, therapeutic south korea

  • Lonk


    17 giorni fa

    than they *should?*

  • Bruce Wayne

    Bruce Wayne

    17 giorni fa

    Here’s a good reason to preserve megafauna from poaching and environmental degradation.

  • Wuztim Vizar

    Wuztim Vizar

    17 giorni fa

    6:33 99 problems and a tumor aint one lol

  • metamorphicorder


    18 giorni fa

    Hmmm. Im wondering what the quality of the studies are. How they determine that they dont get cancer. We are talking about animals that have been essientially hunted to small populations. This extensive hunting may have culled out the vast majority of individuals that were susceptible to cancer to begin with. Things that are cancerous and sick, may be unfit for the demanding proccess of natural survival becomming prey to man and other predators, removing them from the gene pool. This would serve to reduce the factors increasing cancer within populations to essientially exogenous causes such as carcinogens and radiation and natural mutations.
    Their reproductive rates also tend to be much slower, which means that any genetic factor would propagate slower through their populations. They are also mucj slower growing than other animals or more correctly they have more cycles of growth spurts in their life time. And what this really means is that we just haven been finding the cancer.
    I do wonder though if we took one of these large animals and feed it large amounts of refined sugars, restricted its mobility, subjected it to heavy stress, and surrounded it with large ammounts of known carcinogenic materials, what would happen.

  • Maylis T

    Maylis T

    18 giorni fa

    Me, working on the p53 gene, "the guardian of the genome" wich is a tumor suppressor : HMMMMM INTERESTING

  • AlatreonTheDestroyer


    18 giorni fa

    I like that tumour game. Especially when player two joined