Milk Is Just Filtered Blood

Published on Apr 12, 2018
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Special thanks to Honey for sponsoring this episode.
Female mammals make milk, a cocktail of filtered blood, to provide their babies with vital nutrients.
Thanks also to our Patreon patrons and our US-tv sponsors.
To learn more, start your googling with these keywords:
Mammal: Endothermic vertebrates that nurse their young.
Lactation: The secretion of milk by the mammary glands.
Mammary Gland: A cluster of alveoli and ducts that secretes milk.
Mammary Alveoli: The tiny sacs that are the site of milk production and storage in the mammary gland.
Oxytocin: A hormone released by the pituitary gland that - among other things - causes the milk ejection reflex during nursing.
Holstein: A large black and white cow known for the large quantities of milk it yields.

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Credits (and Twitter handles):
Script Writer: David Goldenberg (@dgoldenberg)
Script Editor: Emily Elert (@eelert)
Video Illustrator: Qingyang Chen (@QCVisual)
Video Director: David Goldenberg (@dgoldenberg)
Video Narrator: Emily Elert (@eelert)
With Contributions From: Henry Reich, Alex Reich, Kate Yoshida, Ever Salazar, Peter Reich
Music by: Nathaniel Schroeder:

Skibiel, A., Downing, L., Orr, T., and Hood, W. (2013).The Evolution Of The Nutrient Composition Of Mammalian Milks. Journal of Animal Ecology. 82 (6): 1254-1264. Retrieved from:
Sharp, J., Wanyonyi, S., Modepalli, V., Watt, A., Kuruppath, S., Hinds, L., Kumar, A., Abud, H., Lefevre, C., and Nicholas, K. (2017). The Tammar Wallaby: A Marsupial Model To Examine The Timed Delivery And Role Of Bioactives In Milk. General and Comparative Endocrinology. 244: 164-177. Retrieved from:
Tsuruta, S., Misztal, I., and Lawlor, T. (2004). Genetic Correlations Among Production, Body Size, Udder,and Productive Life Traits Over Time in Holsteins. Journal of Dairy Science. 87(5):1457-1468. Retrieved from:
Nicholas, K. (1988). Asynchronous Dual Lactation In A Marsupial, The Tammar Wallaby. Biochemical and Biophysical Research Communications. 154 (2): 529-536. Retrieved from:


  • Hi there - we appreciate that the “just filtered” part of our title has drawn a few comments and we want to address it. First off - you’re right; you could say lots of things are filtered blood products, including urine and even the carbon dioxide we breathe out. We decided to make this video because we believe most people, including ourselves, don’t think about how the same thing is true for a substance a lot of us drink every day - milk from an animal - and that communicating that fact would lead folks to a different appreciation of what milk is. Secondly - you’re also right; we didn’t fully convey the amazing things that the mammary gland does. Almost all of the precursors to the stuff in milk DO come from the bloodstream, but the special cells in the mammary gland transform many of them into their final milky forms, which we simplified in the video as “do some chemistry on them” and in the title as “filtered.”

    • *_this is why i don't drink milk_*

    • makes sense(kinda)

    • So..., is Aftershock gentically modifed?

    • but it's not lactation. the process of the milk generation is not lactation. this video explain how the milk is generated. probably indeed udderly cringe worthy, you talking about two different thing.


  • The sp00ky memes won't be happy...

  • dude vampires must have hella strong bones

  • why, when i think about cows getting their teets pulled by a human, my balls start hurting

  • And honey is just bee vomit.

  • so were,.... VAMPIRES ;^;

  • 🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔

  • I'm 5 years old I don't know anything

  • I like to think whenever I drink milk I drink blood

  • How do you know

  • 🇺🇸

  • I cant decide what sounds dumber you thinking that filtering is chemistry or attempts to simplify something as obvious as this. The hair on your head must have more cells in it than the contents of your skull. was this an attempt to gross people out?` or was it an attempt to spread misinformation? As a person whose culture often adds pig blood to various dishes it only disgusted me of what kind of person you are.

    • Blood is just water with various nutritions and minerals. but you can try filter the blood it wont do anything it will remain blood. however if you had a brain in that lil head of yours you should know that you must use the process of distillation to separate the two Your nails for example can be considered hardened blood if people where to use your retarded simplifying methods of spreading misinformation.

  • Suckel on the tiet hahahahaha

  • Thanks for ruining my breakfast!

  • i got a add for milk lol

  • The vampires are stealing our milk!

  • I acc dc even though I was dipping Oreos in milk while watching this!

  • *I knew I was a Vampire!* *_Mom, I drank your blood when I was a little vampire bwahaha_*

  • Gross,

  • I knew it all along.... i am a vampire

  • Thai I understand tai

  • Why adults need to drink milk anyway? are you a baby or what? Just drink water...

  • awesome this video has encouraged me to drink as much milk as possible

  • Burger is just cut cow, chips are just sliced potatoes.. and what

  • I’m never drinking milk again

  • O_o yum?

  • Im am a vampire

  • And water is filtered fish pee😂

  • To all the people who disliked this video, you need to watch the full video and try to understand the meaning of it instead of judging the whole thing by the title and saying "Oh that's not true !" or "Fake !". I didn't understand the video at first as well and i told my mom that milk is cow's filtered blood and she started laughing and said that it's not true but when i showed her the video she told me that i didn't understand the whole meaning in it and that i have to listen more carefully instead of just reading the title

  • When moms have milk it’s also filtered Hah! Now all of us has drank that once

  • Milk is filtered blood Urine is filtered blood Milk is just boobie urine Illuminati Confirmed

  • No it's not...

  • Moo ya!!!!!!! ( Good one aftershocked )

  • This channel is shit

  • Shower is just domesticated waterfall

  • Got a good reason not to drink milk! Thanks MinuteEarth.

  • This is fake

  • Now I just realized I've been drinking cow blood basically... *Throws away carton of cow milk*

  • O-O why....?

  • Just another reason I'm glad to be vegan.

  • Milk is filtered blood, are all mammals secretly vampires then? XD

  • I get really woozy when I see blood

  • The name of this vid sounds like a meme

  • So we are all vampires.

  • •_• why

  • how i drink milk milk EVERYWHERE and every day so i LOVE milk milk

  • *T I D D I E S*

  • Um isnt there to much bunnies so um...

  • So when I was a baby mom feed me blood 😖

  • *Never drinking milk again.....*

  • babies are vampires

  • *Why I Went Vegan*

  • If you drink cow's milk remember you had your own share when you were a baby! You don't need it now, especially from another species. Cow's milk and any other species milk is rape (continuous insemination), kidnap (baby calves are taken away from their mothers so you can drink their bloody milk) and murder (because when cows do not produce enough milk, they are killed for their meat and male calves are killed because they do not produce any milk). So...

  • meh. I still love milk.🍼😋

  • omg!!!!!!!

  • Oxytocin is also the chemical that makes you feel good when you fire a gun.


  • Perfect timing the ad was milk

  • I was a vampire when i was young

  • I need some milk

  • *you do know milk lovers and most people wont care right?*

  • ﴿وَإِنَّ لَكُم فِي الأَنعامِ لَعِبرَةً نُسقيكُم مِمّا في بُطونِهِ مِن بَينِ فَرثٍ وَدَمٍ لَبَنًا خالِصًا سائِغًا لِلشّارِبينَ﴾ [النحل: ٦٦]

  • Ok, so.... we can have periods and make milk at the same time?

  • Choco milk= cow poop Strawberry milk= mixed with milk and blood Vanilla milk=cow sperm

  • Your video's brutal oversimplification for the mechanism behind the production of milk is purely astounding! The "Milk is Just Filtered Blood" title grossly misrepresents the actual "SCIENCE" that goes on with milk production. Your vegan-esque writing style has no place in demonstrating science based material, especially to younger audiences. For the purposes of clarity and accuracy, neither politics, religion or personal belief systems should enter into the domain of science and the title of this video so blatantly advertises the latter that it should be retracted for the benefit of those who truly want to learn. Disgraceful!!

  • Who else is drinking milk while watching I am

  • I think ill drink milk more🍷

  • Which means Human milk is filtered blood as well. What if a vegan breastfeeds their child? 😂

  • i dont really care XD

  • Well thanks for ruining my appetite!

  • Shit, then filtered blood tastes good

  • Sooo..... This... Means......I CAN'T DRINK MILK...?!

  • Air is just filtered fart Food is filtered shit

  • Why do people think its gross, its just blood

  • Now I'll tell my friend that is in love with milk.

  • _'I like to drink blood'_ -The Moon Professional Vampire

  • Has anybody made a vampire joke yet

  • Thank you for ruining milk for me if I hated it then I hated it even more now. I was craving it ate some cereal while watching this and mmhmm no

  • Milk is just boneless blood

  • Both Vampire and human drink sweat from sweat gland (in a glass already)

  • Its ok , i dont like milk at all

  • I thought it's was cow piss

  • So cheese and yogurt are rotten filter cow blood, and ice cream is frozen filtered cow blood. Why does this make me want dairy more?

  • Well this cow's filtered blood is delicious

  • Shouldn't have watched this while eating cereal


  • *several vegans are typing*

  • It's just filyered blood but it's still yummy!😋😂

  • How you milk a cow... Hmmm resembles m*strubation... What you get from milking a cow... Hmmm resembles the *fluid... Hmmmmmmm!?!??!?

  • Now my diet for now is milk Wat I drink my blood wats wrong

  • i drink milk and I don't smell blood


  • I spat my milk out when i saw the title

  • Why do women hide their sexual interests most of the time?

  • Blood in milk? Ok atleast its healthy

  • MY LIFE IS A LIE! Okay now I'm going to throw up in the corner

  • Now I wish I was a Vampire

  • Okay. Um. Okay. Bye.

  • W-what milk is made out of blood

  • Sees video *Me: OMG OMG OMG* *Mom: What?* *Me: BLOOD IS MILK* *Mom: IDC GEEZ SHUT UP*