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  • Hi, this is Julián from MinuteEarth.

    嗨,我是 MinuteEarth 的 Julián。

  • Millions of people are diagnosed with concussions each year.


  • In addition to immediate concerns like headaches, dizziness, and fatigue, concussions have been linked with long-term health issues, like depression, chronic traumatic encephalopathy, and even Alzheimer's and Parkinson's disease.


  • But progress in treatment has been hampered by a small problem: No one can seem to agree on what exactly a concussion is.


  • Many neuroscience researchers define a concussion as a specific minor brain injury.


  • But the fancy equipment necessary to detect minor brain injuries is mostly confined to specialty research labs.


  • So instead, when doctors evaluate patients who've recently knocked their noggins, they diagnose based on symptoms like: their short-term memory, their vision, and their coordination.


  • If you have too many of those symptoms, they'll diagnose you with a concussion and send you home with the advice to rest, avoid bright lights, and essentially wait to recover.


  • But many concussion-related symptoms aren't necessarily the result of a brain injury.


  • A headache could actually be the result of a neck injury; dizziness a consequence of an inner-ear problem; and unexpected fatigue could be due to emotional trauma, or even a symptom of preexisting depression rather than recent injury.


  • All of these issues have their own separate treatments that are overshadowed when the diagnosis is "concussion."


  • It's kind of like if a doctor were to diagnose you with "chest pain" and prescribe a generic treatment without determining if the pain is coming from your heart, your lungs, or your ribs.


  • And even when the symptoms are caused by a brain injury, there's a small chance the injury could be more severe than a concussion diagnosis implies.


  • Some dangerous injuries, like subdural hematomas, can present the same symptoms as concussions, and may thus be missed by routine testsespecially when they don't include brain scans.


  • So if the diagnosis of "concussion" isn't really workingand may even be putting people at riskwhy do we still use it?


  • It's partly because a concussion is simplerdoctors can ask a few questions, diagnose the patient with a concussion, send them home, and move on, and in lots of cases, the patient will be fine.


  • It's partly because a simple diagnosis benefits influential sports organizations, who like that athletes with concussions can be cleared to return to play much sooner than if they were diagnosed with a more severe injury.


  • And, it's partly because the confusion around the term "concussion" mucks up the available data, so we don't exactly know how big of a problem it is.


  • If doctors had to make more specific diagnoses, and potentially even ditched the term "concussion" altogether, then researchers would have better data to work with.


  • And patients could potentially get better treatmentall of which would help us deal with one of our literal biggest headaches.


  • Hey!


  • We just made a new show!


  • It's about the human body, and it's called MinuteBody.

    跟人體有關,當然叫 MinuteBody,

  • I mean, what else would we call it?


  • Each episode takes you on a minute-long tour of a different body part.


  • There's one about muscles, one about kidneys and one about poop.


  • Ok, poop's not a body part, but, you know us, we made a video about it anyway.


  • The show is primarily for kids, but adults seem to like it too.


  • We're launching it on Nebula, a new streaming platform built by and for independent educational creators so we can try out new ideas that might not work on YouTube.

    這節目會在 Nebula 上發布,Nebula 是新的串流平台,由獨立教育創作者所建立的,如此我們就能測試一些在 YouTube 上可能行不通的點子。

  • Nebula is usually three bucks a month [3 USD], but now Nebula has partnered with CuriosityStream.

    Nebula 通常一個月 3 美元,但現在 Nebula 有跟 CuriosityStream 合作!

  • If you sign up for a free one-month trial with CuriosityStream at, you get a Nebula subscription bundled in for free!

    如果你訂閱 CuriosityStream 的一個月免費試用,你也可以免費訂閱 Nebula!

  • That means that you'll not only get to watch MinuteBody, along with all of our friends' Nebula shows, you'll also get access to thousands of CuriosityStream documentaries, like Whale Wisdom and Small Cats Unknown.

    這表示你不只可以看 MinuteBody,還有所有在 Nebula 上的節目,你還可以看 CuriosityStream 上數以千計的紀錄片,如 Whale Wisdom 與 Small Cats Unkown。

  • So go to and get watching!

    趕快到 訂閱吧!

Hi, this is Julián from MinuteEarth.

嗨,我是 MinuteEarth 的 Julián。

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