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  • Youre sweaty, get chills, and generally feel terrible. You, my friend, have a fever, but, before you reach for the medicine cabinet, you may want to reconsider breaking it.


  • Hey there, Kaylee here with DNews.

    嘿!你們好!我是 DNews 的 Kaylee。

  • Throughout the day, your body temperature can vary depending on the time, your level of activity, and age, although it averages to about 98.6 degrees Fahrenheit, or 37 degrees Celsius.

    一整天下來,體溫會隨著時間、活動量、或是年齡而有所變化,雖然平均體溫會是在華氏 98.6 度、或是攝氏 37 度。

  • Fun fact: at night, your core body temperature drops slightly, allowing you to fall asleep.


  • But a temperature over 100.4 degrees Fahrenheit, or 38 degrees Celsius, usually means that you have a fever caused by infections or an illness.

    但是當溫度高於華氏 100.4 度或是攝氏 38 度,通常表示受到病菌或是疾病的感染因而發燒。

  • Fever, also known as pyrexia, and it's an important part of the immune system’s response to an invading bacterium or virus.


  • The immune system produces pyrogens, which travel through the blood to the brain, finally reaching the hypothalamus, the body’s thermostat.


  • This then raises the body’s temperature above the normal range, and, lo and behold, you are lying in bed, covered in blankets, fondly remembering the times when you felt normal.


  • If youre really uncomfortable, you might decide to take an antipyretic, or fever-reducing medication.


  • This will inhibit the enzyme cyclooxygenase and reduce the level of prostaglandin E2 in the hypothalamus.

    這樣的藥會抑制環氧酵素,降低中樞神經下視丘分泌的前列腺素 E2。

  • In plain English, the medicine overrides the signals that tell your hypothalamus to elevate your body temperature and will reduce it instead.


  • But having a fever is actually a good sign! It means that our bodies are beginning to fight off the infection.


  • Previously, scientists believed that the elevated temperature might inhibit the growth of some viruses or bacteria and potentially even kill them.


  • However, a study published in the Journal of Leukocyte Biology found that a fever also helps certain types of immune cells to do their job better.

    然而,一個在 Leukocyte Biology 期刊所發表的研究指出,發燒也可以使得某些部分的免疫細胞表現得更為突出。

  • In the study, researchers injected mice with an antigen and then monitored the activation of a type of lymphocyte called CD8+ cytotoxic T cells, which are capable of killing cells infected with viruses and even cancer cells.


  • Half of the mice’s body temperatures were raised 2 degrees Celsius while the other half was left alone.

    一半的老鼠體溫都提高了攝氏 2 度,但另一半的體溫不變。

  • The results showed that the mice whose temperature was raised had more of the CD8+ T cells than the control mice.


  • This suggests that elevated body temperature may enhance the function of the immune system, meaning that we can get better faster.


  • If left untreated, a fever will normally only last two or three days, but the duration can vary.


  • So, as uncomfortable as it is, you may be better off not taking any medicine to reduce it; however, it is important to note that this is only recommended for mild fevers.

    所以,雖然發燒很不舒服,但最好不要吃任何的藥來退燒 。但是,也要記住,這樣的情況只適用於輕微發燒的人。

  • If your body temperature is over 108 degrees Fahrenheit, you may be in trouble; if it becomes too high, youll definitely wanna go see a doctor.

    如果體溫超過華氏 108 度可能就會有危險;如果體溫太高就得去醫生。

  • Fevers from infections rarely get this high, and are instead usually caused by heat strokes.

    感染造成的發燒很少會有這樣高的體溫, 通常這樣的高溫是因為中暑。

  • See, when your body temperature gets high, you sweat to cool down. As a consequence, your body loses water and salt, which are essential for normal functioning.


  • And if youve already lost a lot of water and become dehydrated, you may not be able to sweat fast enough to dissipate the heat, causing your body temperature to rise even further.


  • You know how your parents always tell you to stay hydrated when you are sick? Yeah, that’s why.


  • At such a high temperature, proteins and cell membranes, especially in the brain, can be destroyed or malfunction.


  • Heart muscle cells and blood vessels can break down, damage can occur to internal organs, and, in the worst case, a fever can cause death.


  • While a fever may help you get over your infection faster, the brain and body can only handle so much.


  • So, what’s the worst fever that youve ever had? And what do you normally do to get over it?


  • Let us know in the comments and if you want to know more about temperature’s effect on sleep, head over to my personal channel, Explorium, to find out if sleeping naked is better for you.

    在留言區跟我們分享吧!如果還想要了解有關溫度會影響睡眠的相關議題,可以來我的個人頻道 Explorium,你會發現,裸睡可以使你們的睡眠品質更好。

  • See, when you go to bed at night, your core body temperature decreases by about half a degree Celsius.

    當晚上要睡覺時,體溫會降低大約是攝氏 0.5 度。

  • Now, that might not seem like a big change, but it's thought that some insomniacs may have a hard time getting to bed because they have impaired thermoregulatory systems, making it harder to lose that extra heat.


  • If youre on mobile, it will be the first link in the description.


  • Thanks for watching DNews and subscribe for more!

    謝謝收看 DNews。訂閱的話可以收看更多影片哦!

Youre sweaty, get chills, and generally feel terrible. You, my friend, have a fever, but, before you reach for the medicine cabinet, you may want to reconsider breaking it.


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為什麼不應該強制退燒 (Why You Shouldn’t Fight A Fever)

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    Pedroli Li 發佈於 2021 年 08 月 19 日