Systemic thinking about cancer | Miscellaneous | Heatlh & Medicine | Khan Academy

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Dr. David Agus discusses thinking systemically about cancer and other things. Created by Sal Khan.
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Опубликовано:

2 окт 2011

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Комментарии : 48

@IgorAlvesAS 12 лет назад

Man, I loved Dr David Agus, and his explanation, really amazing! I expect that he comes back for another video.

@ChiragSonne Год назад

David who teaches Language Arts

@hungrygit 12 лет назад

Very fascinating video giving a unique view on how cancer works. The case study of the mouse showing how the cancerous cells had spread quickly without actually causing a cancer was an eye opener.

@supriya55 12 лет назад

if sal hadn't grasped what the prof was saying and put it into his own, clearer, words, i wouldn't have understood a thing

@maxwellnjati1756 3 месяца назад

Changed my way of thinking

@TheSattieg 8 лет назад

Wow, thanks so much for this video!

@TLR91 12 лет назад

great vid would definitely like more about topics as this one..

@Manodragon 12 лет назад

biology videos! I love them! thanks

@brownmolasses 12 лет назад

Amazing!!

@khanacademyfan 12 лет назад

I really like these duo videos

@closedown12 12 лет назад

Fascinating !!!

@bankaikun94 12 лет назад

this is why i am going into the career of biomedical engineering.

@adamsvette 12 лет назад

fascinating!

@DrGregoryHouse100 12 лет назад

exactly...fascinating...

@VanHalen2882 12 лет назад

the absolute wealth of knowledge on your channel just astounds me. thank you so much sal

@amyntazoe 12 лет назад

@oozhaboo I have heard about the bodies PH level plays a role in sickness, but I have not read any of the book. Thanks, I will check it out! :) You are what you eat!

@kokocipher 12 лет назад

This .. is so cool !! :O

@somnathganapa5789 7 лет назад

Any chance the osteoporosis medication interacted with the medication given before the experiment?

@hungrygit 12 лет назад

@coburleson By suggesting people start looking more at the phenotype than the genotype, I think he's pointing out that although genotypes can vary a lot, the phenotype doesn't vary much. Maybe he's suggesting that this phenotype could be a kind of visual indicator as to what is causing the cancer to spread, Maybe a change in the environment has given this cell a huge advantage over normal cells (an advantage it wouldn't find elsewhere in the body). Just maybes and my interpretations :)

@1yawn2many 12 лет назад

why aren't links to the cited studies provided?

@PartVIII 12 лет назад

@f0revern0ty0urs2 12 лет назад

very interesting indeed,but how do we know that changing the "soil',in this case 'strengthening' an organ,will not make it more susceptible for cancering?

@RickyRoro777 10 лет назад

Those changes did not cause a change from chaos to order. Rather, the egg is initially in an ordered state, which follows through into a more complex ordered state by following the specific instructions embedded in DNA. When the conditions are not good, it moves from an ordered state (the egg with the potential to grow) into chaos (the egg which has died and begun to rot).

@tweezinhard 12 лет назад

Just watched this video about cancer and wondered if others watching had heard about Burzynski and antineoplastons.

@hungrygit 12 лет назад

@coburleson You and the video creator are clearly talking about different approaches to preventing cancer. You talk about preventing cells from becoming 'potentially' cancerous in the first place, he talks about preventing 'potentially' cancerous cells from becoming actively cancerous. I quote potentially because, until this video, I thought a cell was either cancerous or it wasn't. I didn't know it could be dormant until the right conditions in the body occur. Both angles merit discovery.

@morarulz 12 лет назад

Medicine AND engineering??? MY GOD MAN!!!

@SlipAllCityToy 12 лет назад

That feeling when you click on a video because the thumbnail is a young, good looking chick and you just see a pair of balls when you open it. DAMN YOU!

@hungrygit 12 лет назад

@coburleson This guy says that these cancers only survive under certain conditions. To my understanding, he means if you're liver is in an unhealthy condition, the cancer can take hold. If your liver is healthy, a cancerous cell may occur but would be unable to take hold. Maybe he means some mutagens and/or carcinogens merely encourage cancerous cells to grow, not actually create them?

@idster7 12 лет назад

9:05 "Somehow evolution is selecting out for phenotype...." So, what does Ager mean here? Why does he suspect that cancer's looking similar on the surface to an outside observer with a microscope or a CAT scanner would be in evolutionary favor?

@idster7 12 лет назад

@idster7 sorry, Agus*. 9:05 Why does Agus suspect that cancer's looking similar on the surface to an outside observer with a microscope or a CAT scanner would be in evolutionary favor?

@mahtabliaquat 12 лет назад

10:29 - 10:32 lol

@SapBurough 12 лет назад

@sabatheus lol have fun getting muscles with just veggies

@ShakkIsLife 12 лет назад

@amyntazoe Very true :)

@MonkiePilot 12 лет назад

HAHA ! SAL was wrong about something! Even I knew it was a Chick! That makes me feel a little better about myself.

@SalsaTiger83 12 лет назад

I wonder how many children in America will now put eggs into their rooms and try to make them hatch ;-)

@hungrygit 12 лет назад

@coburleson Nah, I won't! Jumped the gun a little here and went with the basic 'causes cancer' definition. Fail. However, from what he's saying, his approach to preventing cancer would be to prevent cancerous cells (already mutated / damaged) from becoming active. He believes controlling the environment of the cells is the key to this. If he's right, this kind of research could at least slow down cancer whilst it is treated.