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  • Death is something that all of us must deal with at some point in our lives whether it be a family member, a pet, or even your own eventual end.


  • In fact, about 100 people die every minute in the world.


  • But what actually happens when you die?


  • In the first few seconds after death, the last bit of oxygen in your body is depleted and brain activity surges.


  • As the neurons begin to stop functioning, your brain stops secreting hormones which regulate body function.


  • And while some bodily functions may persist for a few minutes, as the remaining stores of ATP are used, which is your body’s main energy source.

    生理功能在人類死亡後還會持續個幾分鐘,是因為還有剩餘的 ATP (三磷酸腺苷)在運作,而 ATP 是體內的主要能量來源。

  • The muscles relax, including sphincters, which means defecation and urination may occur.


  • Around 15-25 minutes after death, the lack of blood flow through the capillaries leads to the paleness of death seen in light skinned people.

    死亡後的 15 分鐘到 25 分鐘左右,由於流通於微血管的血液減少,人體會從原本正常的膚色轉成蒼白。

  • Because your heart is no longer running, there is no active propulsion of blood through the body, so gravity begins to cause pooling of blood in the lowest parts of the body.


  • After a few hours of blood pooling a reddish purple discolouration of the skin occurs, and reaches its maximum discolouration by 12 hours.

    血液流向底層的幾小時後,皮膚會開始浮現紫紅色, 12 個小時後,整個皮膚呈現紫色的狀況是最明顯的。

  • This is one of the ways in which coroners or forensic investigators determine the approximate time and position of a body at death.


  • Within 3-6 hours, the infamous rigor mortis sets in; not only has your bod lost its energy source,


  • but deterioration of cellular organelles leaks calcium into muscles cells, and this binds to proteins which are responsible for muscle contraction.


  • This causes uncontrolled tensing or stiffness of muscles, making the bodystuckin a position, lasting anywhere from 24-48 hours.


  • Up to this point, unless youve been chemically embalmed or preserved in some manner, your body has been slowly decomposing as well, undergoing cell death.


  • Without proper blood flow, these cells accumulate and along with CO2 gas, cause the ph of tissues to rise.

    當血壓流通不正常會累積出壞死的細胞,再加上二氧化碳氣體的緣故,血液組織的 ph 值(溶液酸碱程度)會升高。

  • This weakens the cell membrane, eventually causing them to burst and release their cytosol, which contains functioning proteins and enzymes that further breakdown surrounding tissue.


  • There are also around 100 trillion microorganisms that help to break down your body.


  • The anaerobic bacteria in the gastrointestinal tract begin to eat through abdominal organs.


  • This process is known as putrefaction and it’s where things can get stinky.


  • Breakdown of amino acids by the bacteria produces extremely foul gases,


  • which attracts certain insects like mites, carrion beetles and blowflies which lay eggs in the rotting tissue.


  • The eggs hatch within a day, and the larvae or maggots eat the tissue to survive until they mature.


  • After weeks, these maggots may consume 60% of the body’s tissue, creating holes that allow decomposition fluids and gasses to escape.


  • Between 20-50 days, butyric fermentation begins, attracting beetle larvae, protozoa and fungi.


  • This process, known as dry decay, can take up to a year, but occurs faster in hotter temperatures.


  • Over years, plants and animals eat away at the remaining bits of the body, including skeletal remains.


  • Eventually, if left completely to the elements, every bit of the body will be broken down and its constituent molecules will be recycled.


  • If you’d like to learn more about the psychological side of death, check out our AsapTHOUGHT video on the Top 5 Regrets People Have Before Dying.

    如果你想進一步了解死後心理上的變化,請觀賞我們 AsapTHOUGHT「人在死前的五大憾事」的影片。

  • It’s a fascinating look at the things people think about in their last moments.


  • Link in the description! And subscribe for more weekly science video!


Death is something that all of us must deal with at some point in our lives whether it be a family member, a pet, or even your own eventual end.


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