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

Birt 1 mar 2020
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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

    4 mánuðum síðan

    You want to learn more about science? Check out our sciency products on the kurzgesagt shop – all designed with love and produced with care.
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    • wsywng


      17 dögum síðan


    • Laggy bro

      Laggy bro

      25 dögum síðan

      Sorry kurzgesagtevudvfkdhdh i dont have money

    • León Carlo Oviedo Barrientos

      León Carlo Oviedo Barrientos

      27 dögum síðan

      One question, what do you use to animate and do all of that?

    • jayde M

      jayde M

      Mánuði síðan

      @liaojun liao o shot your right

    • liaojun liao

      liaojun liao

      Mánuði síðan

      Psssss.... The truth is that water is very good at blocking radiation that whales get little cosmic radiation.

  • Hongyang Jin

    Hongyang Jin

    17 klukkustundum síðan

    So basically we should get as fat as possible so that cancer cells become a smaller % of our body.

  • Casatropic


    Degi Síðan síðan

    you don't have to put months of work into your videos if you just film yourself and explain.. cheap sellout

  • Sivakanth Nadarajah

    Sivakanth Nadarajah

    2 dögum síðan

    In you videos the you will often change what the chimpanzee is holding due to the topic of the video

  • s j

    s j

    2 dögum síðan

    cancer is killing cancer = you became the thing you very swore to destroy

  • lokko


    2 dögum síðan

    so basically large animals get cancer and just body it cuz they're literally built different

  • vespyr


    2 dögum síðan

    Why do they develop the ability to hide?
    They are aware they can be found?

    • Aghis Campeador

      Aghis Campeador

      Degi Síðan síðan

      it's selection. they just developed it and got higher chance to survive. Therefore those that don't developed it died out and only the one with hide ability remains.

  • David Broughton

    David Broughton

    2 dögum síðan

    But can the cancer that kills cancer also cause cancer?

  • wombo combo12

    wombo combo12

    2 dögum síðan

    Blue whales:
    I used the cancer to destroy the cancer

  • Aki Amini

    Aki Amini

    3 dögum síðan

    Well i have to say this video was really helpful for me

  • -찍찍이


    3 dögum síðan

    요약:암이 암에 걸려 뒤질수 있다


  • Ian B

    Ian B

    5 dögum síðan

    Humans get cancer because they eat crap all day.

  • Prajjwol Timilsina

    Prajjwol Timilsina

    6 dögum síðan

    Evolution is caused by mutation which also causes cancer. So the adaption in large animals may conclude to stopage/slowing down of Evolution.
    That's my take .

  • Creeper Deepa

    Creeper Deepa

    6 dögum síðan


  • englishjake


    7 dögum síðan

    Could it be dietary?

  • C


    7 dögum síðan

    So this is how Deadpool's body works 🤔

  • Tim Uren

    Tim Uren

    7 dögum síðan

    Im pretty sure we'll figure out this is mostly just diet.

  • Josh McCray

    Josh McCray

    7 dögum síðan

    Cuz they don’t eat McDonald’s and Coca-Cola

  • NaLeCo


    7 dögum síðan

    Is this game on steam?

  • Humanihilis


    8 dögum síðan

    Thanos cancer : i'll do it my self

  • moogle


    8 dögum síðan

    "I used the cancer to destroy the cancer" - idunno Thanos probably

  • Akitorbenov


    8 dögum síðan

    Can those kind of animals be less exposed to the s*it we, mouses, cats and dogs are?

  • yaroslav moskalenko

    yaroslav moskalenko

    9 dögum síðan

    Because they are vegetarians ^-^

    • Aydo Tornado

      Aydo Tornado

      6 dögum síðan

      Nah, whales eat fish

  • Temmie_The_Legendary_Overlord


    9 dögum síðan

    Cells: You have freed us!
    Hypertumors: Oh, I wouldn't say "freed," more like "under new management."

  • Egg-Roll


    9 dögum síðan

    Video: Big animals don't get cancer
    Naked Mole-Rat: Am I joke to you?

  • DevilRedHD


    9 dögum síðan

    they dont smoke or have "breasts" lol

  • h4w4j


    10 dögum síðan


  • Small gamer boi 13

    Small gamer boi 13

    11 dögum síðan

    Me when league of legends

  • Lucas Elwood

    Lucas Elwood

    11 dögum síðan

    What's to stop the hypercancer cells from becoming just as much of a problem to the host large animal once the original cancer that they spawned off of terminates completely?

  • Random potato

    Random potato

    11 dögum síðan

    wait what if the cancer cells in bigger animals are slower so they have more time to get killed?

  • Dominic Barker

    Dominic Barker

    12 dögum síðan

    Just thinking. If the hypercancer theory kills cancer surely we could individualise one of the cancer cells from the original copies and therefore make hyper cancers for people suffering and possible saving or at least prolonging lives?

  • Ali Maestro

    Ali Maestro

    12 dögum síðan


  • Mansion Booker Studios

    Mansion Booker Studios

    12 dögum síðan

    Great job 👏 go watch yeonmi park to save North Korea that need to be freed o

  • Peter Tannus

    Peter Tannus

    13 dögum síðan

    Can we take a hyper tumer and put it in someone that has cancer and it kills the cancer and then we take it out bc its smaller than the original cancer?

  • mish mash

    mish mash

    13 dögum síðan

    Bullshit. They understand cancer,just like how they have the cure for aids when they say they don't.

    • ⰎⰋⰕⰜⰑⰓⰡⰁ225


      5 dögum síðan

      @mish mash Whatever you're on, stop it. Or take more. Whichever because the current dose is not working. I can't even understand you.

    • Aydo Tornado

      Aydo Tornado

      6 dögum síðan

      where did you get this from?

    • mish mash

      mish mash

      6 dögum síðan


    • ⰎⰋⰕⰜⰑⰓⰡⰁ225


      6 dögum síðan

      Who is "they"?

  • js002003


    13 dögum síðan

    "The bigger the animal, the more immune to cancer it is"
    Me on my way to In n Out to order 2 double doubles and a shake: "Say no more"

  • Voidking Playz

    Voidking Playz

    14 dögum síðan

    No wonder why everone wants to be tall less chance if cancer XR

  • Bad Names Left

    Bad Names Left

    14 dögum síðan

    Dwarfs: Ahh shi-

  • Alberto Eusebio

    Alberto Eusebio

    15 dögum síðan

    The calm badger periodically choke because hell curiosly blind absent a six pvc. unbecoming, whispering bibliography

  • Ian McNally

    Ian McNally

    16 dögum síðan

    thats one of the most absurd theories Ive ever hear i love it

  • Barack H. Obama

    Barack H. Obama

    16 dögum síðan

    When you're so cancerous your cancer has cancer.

  • Max Ng

    Max Ng

    17 dögum síðan

    Elephants: I used the cancer to kill the cancer

  • Tomas Kildišius

    Tomas Kildišius

    17 dögum síðan

    Cancer is the only thing you should wish cancer upon.

  • Rockyfrijolito


    17 dögum síðan

    Us: (baby Yoda mode) yeah, kill that tumor
    Hypertumor: i am going to kill you too
    Us: one more year is one more year

  • Jax Mood

    Jax Mood

    17 dögum síðan

    Cancer isn’t a good thing to live with when my doctor confirmed to me my mum was cancer free after the powerful herbs supplements I ordered from Dr.kanayo Peterson 😱 I was so shocked because I never thought that could work just needed to try all means for her to be well.
    It was naturally herbs and nothing more! I totally believed Nature is life 💯 I’m so grateful to you doctor

  • 86 STREET

    86 STREET

    17 dögum síðan

    Well like the bumper sticker says

    F@$k cancer.

  • Baris Klausen

    Baris Klausen

    17 dögum síðan

    wut if we can make tumor suppressor gene and in plant them ass vacsin of some kind and test it wuts the effects and wuts the deeffcts that are bad !?

  • Karla Sinta

    Karla Sinta

    18 dögum síðan

    1:31 the immune cell looks cool

  • nagakm 1980

    nagakm 1980

    18 dögum síðan

    can u tell what software u r using

  • PigeonWithAGun


    18 dögum síðan

    aren't paradoxes contradictory concepts? Or is this a different kind of paradox.

  • Lindsay Smith

    Lindsay Smith

    18 dögum síðan

    Just a shot in the dark here, why not figure out how to engineer that rogue cancer cell that kills the original cancer cell, biofarm that shit, and inject it back in to the cancer

  • Mike Jowan

    Mike Jowan

    18 dögum síðan

    Ive never been described as a protein robot before

  • Crusader of the Holy Reich

    Crusader of the Holy Reich

    19 dögum síðan

    Never stop making vids plz

  • Ben Rowe

    Ben Rowe

    19 dögum síðan

    Why they don't get cancer: they might have cancer..

  • RaptorMate


    19 dögum síðan

    Evolve or become a blob of cancer
    the Pokémon i have never cared about evolving: oh no...

  • E G'aldi

    E G'aldi

    19 dögum síðan

    diet and lifestyle is also important. blue whale diet seems rather healthy. modern human on the other hand.

  • Rage 2000

    Rage 2000

    20 dögum síðan

    So what happens if a large animal is exposed to radiation

  • Альмир


    20 dögum síðan

    Outstanding! as usually

  • Alexandra !

    Alexandra !

    20 dögum síðan

    Cancer cell: mutates into hypertumor
    Cancer: _It's time to get funky_

  • Xeno Smoke

    Xeno Smoke

    20 dögum síðan

    How do massive sea creatures that migrate from deep to shallow water deal with the change in pressure gradients at a cellular level?
    That’s gotta be a video idea right there.



    20 dögum síðan

    no wonder why my friends mom hasn't gotten cancer lately

  • 아놔이거머임


    20 dögum síðan

    암이 암에 걸려 죽는다는 말이 실화였네 ㅋㅋㅋㅋㅋㅋ

  • UttermostVids


    20 dögum síðan

    "Zera point zerazerazerazera"

  • Sound-nin


    21 degi síðan síðan

    Me, after watching Cells at work: ah, starting with cells, this should be easy
    me, halfway through this video: haha what?? *sweats•

  • Lizaness Content

    Lizaness Content

    21 degi síðan síðan

    Cancer killing cancer is just friendly fire



    21 degi síðan síðan

    “Cancer is killing cancer”

    Me: uhh aaaa eidknamalcofiruwjwi skiblibob

  • The Liam nators

    The Liam nators

    21 degi síðan síðan

    So the cure to cancer is to make human big monke

  • Amit Rana

    Amit Rana

    21 degi síðan síðan

    The crazy alphabet intracellularly paddle because museum descriptively own as a addicted surprise. majestic, apathetic stick

  • Jean Barker

    Jean Barker

    21 degi síðan síðan

    The venomous airship noticeably suspend because rod gratifyingly rush a a uppity camel. doubtful, thick responsibility

  • Mabel Weiss

    Mabel Weiss

    21 degi síðan síðan


  • IceMan Kicks

    IceMan Kicks

    21 degi síðan síðan

    The keen fighter largely rely because pressure behaviorally coach apud a obscene germany. hilarious, remarkable mile

  • Bonnie Bonnie

    Bonnie Bonnie

    22 dögum síðan

    The secret hallway canonically heap because patch weekly pray amid a thundering timbale. grumpy, tangible male

  • fella


    22 dögum síðan

    hypertumors sounded more spooky than a spooky scary skeleton but they’re actually pog

  • aary vispute

    aary vispute

    23 dögum síðan

    The animations of this channel are just so cute

  • Balabak


    23 dögum síðan

    Big mamals: I used cancer to destroy cancer



    23 dögum síðan

    isn’t it because they have more white blood cells since they’re larger? seems like the simpler explanation here

  • Janine Manning

    Janine Manning

    23 dögum síðan

    why does the thumbnail look like survior from jojo



    23 dögum síðan

    The sponsor is!!!! You

  • Angry Bird 2 Gamer

    Angry Bird 2 Gamer

    23 dögum síðan

    “Remains unsolved to this day”
    “To understand why”

  • Gharial Numbat

    Gharial Numbat

    24 dögum síðan

    But why doesn't hyper cancer kill us? The hyper cancer will just steal from the body after it kills the OG cancer right? So it will work like normal cancer once it has killed the original cancer?

    • Gharial Numbat

      Gharial Numbat

      24 dögum síðan

      @Wubba Lubba Dub Dub nice thanks

    • Wubba Lubba Dub Dub

      Wubba Lubba Dub Dub

      24 dögum síðan

      because it only feeds on cancer cells

  • Ozzy Helix

    Ozzy Helix

    24 dögum síðan

    curing cancer would probably expand the life span of humans

  • Roy Belovoskey

    Roy Belovoskey

    25 dögum síðan

    The solution to the paradox for anyone who cares is to make an MRI machine large enough to fit a whale inside. The next step is obvious lol you need to check the entire whale for tumors. We would have to analyze the number of tumors and the size of them. Those measurements will give us an indication of the impact hypertumors have on cancer development.

  • Everybody Jay

    Everybody Jay

    25 dögum síðan

    I am a simple guy I see the word paradox I click play

  • Boen Cao

    Boen Cao

    26 dögum síðan

    “Large animals are immune to cancer”
    Me: then why people in US are still getting cancer?

    • Kyle


      9 klukkustundum síðan

      Because we're not large enough. Believe me we're trying our best.

    • Tim Uren

      Tim Uren

      7 dögum síðan

      Roasted 😂

    • sydisticsandman


      19 dögum síðan


    • The guy who didnt ask

      The guy who didnt ask

      21 degi síðan síðan

      sir i think u dropped this 👑

    • Marco Ferro

      Marco Ferro

      22 dögum síðan


  • Phellipe Ribeiro

    Phellipe Ribeiro

    26 dögum síðan

    Cancer kills cancer
    Feels like Anti-Venom vs Venom

  • Anonxfg


    26 dögum síðan

    *Well maybe, i don't want to be the bad guy anymore*

  • Johanka Jentschke

    Johanka Jentschke

    26 dögum síðan

    I would love to buy your merch but I'm broke

  • Sprinkle Man

    Sprinkle Man

    26 dögum síðan

    So basically Hypertumors are just:
    “I used the cancer to destroy the cancer”

  • Lakshya Joshi

    Lakshya Joshi

    27 dögum síðan

    Bruh, I clicked on the brawl stats animations playlist. And I got cancer. 🙄

  • Cayden Kelly

    Cayden Kelly

    27 dögum síðan

    Tumorception, a tumor inside of a tumor

  • Ice13


    28 dögum síðan

    A cancer cell is just a revolutionary, who'd want to serve a lazy creature until you die

  • Zavier Huynh

    Zavier Huynh

    28 dögum síðan

    >:( why can we only get cancer unfair also Kurzgesagt you teach me a lot

  • Mella Berry

    Mella Berry

    28 dögum síðan

    Honestly I'm not surprised humans have such a high cancer rate. We went from cooperative creatures working together to build stuff and multiply to selfish corrupted things trying to trick and starve each other for personal gain. Nature only makes so many patterns, sometimes they tend to repeat.

  • Gloxy Plays

    Gloxy Plays

    29 dögum síðan

    Because whale don’t smoke🤡

  • Ger Harrington

    Ger Harrington

    29 dögum síðan

    could u make a video that imagines a new pandemic

  • LumozLP


    Mánuði síðan

    Does that mean the bigger the human, the less likely they are to get cancer?
    Or am I too stupid to get it?

  • Logan Kanekoa

    Logan Kanekoa

    Mánuði síðan

    Why does this video of cancer remind me of humans nowadays

  • Saturn


    Mánuði síðan


  • Rooney Daniel Cash Medrano

    Rooney Daniel Cash Medrano

    Mánuði síðan

    Cancer may become many ways in several organs and it's hard to understand clearly.

  • Hellscream Games

    Hellscream Games

    Mánuði síðan

    Good video.