Dangers of Microgravity For The Human Body

Microgravity is dangerous for humans. But if we want to conquer space, we need to know how to mitigate the negative effects. Join my discussion with Dr Danail Obreschkow from UWA. We talked about studying the effects of microgravity on human body, particularly eyes, and potential ways to deal with them.

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00:00 Intro
01:35 Flying on parabolic flights
08:49 What does weightlessness do to human body
14:17 Things we can't fix
17:44 Studying eyesight in space
25:01 Will artificial gravity solve it?


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⚖️ LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)

You are free to use my work for any purpose you like, just mention me as the source and link back to this video.

[raylampago]

I love how they describe the Gravity Machine from Dragon Ball Z there at the end

[robertt]

I like that Danail was excitedly talking about the heavy gravity testing.

[OldGamerNoob]

Also, if a small centrifuge gives you more gravity on your legs than their brain, that sounds like the opposite of the problem that causes vision problems.
It would be interesting to see research into if such a setup could actually serve not just as a preventive measure, but as a treatment to reverse the problems once they are noticed.

[unvergebeneid]

Funny, I just had a conversation with ChatGPT about microgravity and what have you, got the idea of having a high-g space hotel in space when it told me about research showing >1g environments might actually be good for you and then remembered you had this new video out that I hadn't watched yet. I only came here to ask you about this concept but then I had the good sense to skip through the video a bit to see if y'all are actually discussing this concept in the video already and lo and behold, you actually do! :D Very funny coincidence!

[bravo_]

I like those more serious types of interviews. Thank you!

[MCsCreations]

Fascinating stuff indeed! Thanks a bunch for the interview, Fraser! 😃
Stay safe there with your family! 🖖😊

[Life_]

33:35 reminds me of the Gravity Machine from DragonBall Z

[ricksspeedshop]

Cool interview, pretty detailed explanation of consequences in low gravity. Thank you!

[AndersWelander]

I have envisioned moon and Mars cities that way too, a rotating underground world that as perfectly as possible mimics life on Earth. You need the 24-hour day too. I think the Martian 24:40 would work just fine but on the moon you would have to totally simulate day and night. One thing I am wondering about is the role of all the little bacteria that we live with, whether something can go awry with that. I am really keen on being as healthy as possible here on Earth. We need lots of things to be just right.

[sabkobds]

Correction: If you need 1G on Mars by adding gravity using centrifuge it's not just simple adding equivalence of 2/3 G. Because Martian gravity and centrifugal force are perpendicular vectors. So, using Pythagorean theorem you need sqrt(1-1/9) G or sqrt(8)/3 G, what is about 2.83/3 G or 0.94 G (about 9.25 N).
Conclusion: we need to simulate almost 1G to archive 1G.
If we calculate angles we need almost 20° inclination from surface (little more than 70° looking from vector of Martian gravity as reference point).

P.S. Using same math on Moon: we need sqrt(35)/6 G (more than 0.98 G) for needed centrifugal force.

[richarddeese]

Thanks. For the next space station: build a sleeping cylinder, with mattresses upright around it. Pole in the center that doesn't spin. Enter thru top or bottom as needed. Subway ring handles around upper portion. Grab a handle, start rotating, strap yourself in, sleep. As Dr. Obreschkow pointed out, you sleep 1/3 of the day, and your body feels that gravity. Maybe such a system would help. Seems quite doable from an engineering standpoint. tavi.

[LearningwithDrWalck]

I was on the vomit comit years ago. Best experience ever!!!!
Nice explanation

[rkramer]

Why I’ll never understand how people close their eye on rollercoasters, amusement rides, etc. Maybe I’m not in the norm but if I can see what’s going on then my brain quickly sorts out the motion but freaks the hell out if there is nothing to reference.

[rickeybarnes]

I saw where the European space station will have a deck with spinning gravity. I think we all know that micro gravity is bad for us after 50 plus years of dealing with this. Time for a different direction with something like artificial gravity even if it’s less than 1 g. As always great discussion.😊

[bravo_]

30:26 lol, I’d feel like a ferret within a Ferris wheel

[robotaholic]

When I was 6 my mom and I went up with a friend in their ultralight plane and after we got so high he yelled "Take over!" and the plane started to fall and I tried to grab some lever I cant clearly remember but then he took over again and they both laughed at me so hard. It absolutely traumatized me and I avoid flying when physically possible. - especially in a small plane!

[spanglerimagery]

16:25 macular degeneration can come of two conditions, wet, and dry, .. perhaps these types of meds could help

[rJaune]

Are there any cellular processes that need 1G to work properly, or are the microgravity problems only on a whole body oevel? Great interview!

[OldGamerNoob]

If spinning in near zero G's (I assume at a constant rate) just feels that everything else is spinning . . . what would this say about people in an artificial spinning gravity situation?
Could the minimum rotation radius and/or speed needed to avoid feeling sick really be smaller since there is no other gravitational or visual point of reference for the brain to identify the spinning?

[bravo_]

33:33 That’s the concept behind Superman. He doesn’t fly, he jumps very high because he’s naturally from a planet with higher gravity.