QQs:Can Hanging upside down kill you ?
Maybe you tried this as a kid: challenging your friends on the playground to see
how long everyone could hang upside down from the monkey bars.
You could feel the blood rushing to your head,
and maybe you lasted a few minutes before giving up.
Because it’s pretty uncomfortable.
Or maybe an adult told you to get down because your head will explode
or something silly like that.
不过 倒挂确实不那么有趣 且不能儿戏
Well, it turns out that hanging upside down isn’t all fun and games.
如果你倒挂很久 一个小时或者更长时间 你可能会死亡
Because if you do it for too long, like a few hours or more, you actually could die.
Now, it’s not a common thing.
Most of the reported cases involve people getting trapped upside down somehow
like a man in Utah who got stuck in a cave and died after 28 hours.
Medical examiners call these deaths in a head-down position, reverse or inverse suspension.
The exact reason why hanging upside down can kill you isn’t totally clear
because there are a lot of things that could go wrong.
In a lot of these cases, the official cause of death is asphyxiation, or a lack of oxygen.
内科医生提出 当人体倒置时 肝脏和肠道
Physicians have proposed that when you’re upside down, your liver and intestines
put extra weight onto your lungs, making it harder to breathe.
But others think heart failure is usually to blame.
If you’re flipped around, there’s a lot more blood flowing toward your heart than normal
and that makes it harder for your heart to pump it back out.
Eventually, your heart isn’t able to pump enough blood to keep your body going
which is called heart failure.
If being upside down increases stress on your heart, that could also explain
why it seems too take less time for older people
or people with heart conditions to die in these unfortunate situations.
Then, there’s all that blood in your brain, increasing pressure.
造成血管爆裂 引发脑出血 损伤脑细胞
And that could rupture a blood vessel and trigger a brain hemorrhage, damaging brain cells.
但奇怪的是 在身体倒置致死的案例中 法医并未发现大量的脑出血
But, strangely, forensic scientists haven’t seen a lot of brain bleeding in upside-down deaths.
Even if you don’t die, hanging upside down could still be dangerous for your eyes.
眼睛是一个充满液体的湿软球体 它将光折射到视网膜上 人因此而看得见
Your eye is just a squishy orb filled with fluid, which focuses light onto your retina so you can see.
And things can go wrong if that fluid is at the wrong pressure.
When you’re upside down, the pressure inside your eye can double
and a few people have reported temporary vision problems.
So, it’s probably best to stop those kinds of playground challenges
and just you know avoid death-defying stunts that involve hanging upside down.
They’re pretty dangerous.
Thanks for asking, and thanks especially to all of our patrons on Patreon who keep these answers coming.
If you’d like to submit questions to be answered, go to patreon.com/scishow.
And don’t forget to go to youtube.com/scishow and subscribe!