Everyone knows (and passionately hates) the runny nose, coughing, sneezing, aching/sore joints, and the drowsiness associated with the cold. But these symptoms are just the body trying to get rid of the rhinovirus. What does the cold actually do to you, and what would happen if the body did not fight it? Would you just die?
120577
Most symptoms commonly associated with respiratory viral infections, like the common cold, are actually immune in nature. Fever is the body's attempt to overheat the virus, excess mucous is the body's attempt to catch virus before it enters the body, fatigue is the result of immune exertion in fighting the virus, chills are the result of fever, etc.  What types of symptoms of a respiratory viral infection tend to be directly caused by the virus, and what types tend to be caused by the body fighting a viral infection? A better way to ask this might be, what symptoms of a respiratory viral infection would an immunocompromised individual show?
43342
Now I feel sick. I wish I [didn't eat/hadn't eaten] pork with cheese for dinner.   I would use "hadn't eaten" as it was my dinner but "now I feel sick" confuses me.
124102
What happens if I dip below 1 life from an effect that will also heal me after the damage is dealt?  For example:   If I bolt myself while I'm at 3 or less with a  on the board? Will I die while at 3 or less if I -2 , targeting myself? Will I die if a creature with my  on it damages me? Will I die if I target myself with enough damage to 'kill' me with a ?   and so on and so forth. You get the idea. I'm pretty sure there's a relatively simple answer that I just don't know about.
96929
I've read a new study which suggests that yawning may help you keep a cool head. Also, the findings might hold some hope for sufferers of insomnia, migraines, and even epilepsy.  Is there any conclusion about what the function of yawning is and why do we yawn?
76759
How do the B-cells and T-cells recognize or distinguish a body cell from a foreign particle?  I suspect something to do with this causes Auto Immune Disorders.
103556
I've passed half or more of my life, sleeping in very late and often after the sun rises. Now I believe that I'm already feeling its effect. Some of my hormones are under the ideal levels and I have a deficiency in vitamin D.  What are the effects of sleeping during the day and not at night for work reasons or just habit? Is there any effect that can't be reversed simply by sleeping at night? (Assuming that you are sleeping enough time per day like 7-8 hours)  Could this sleep pattern be related to endocrine ills and other ills?
26949
Last night, I walked home from my bus stop (in Belgium). Since it was around 11 PM, it was quite cold, probably only about 4-5&nbsp;°C. However, it didn't actually feel cold at all, and I didn't feel like I had to rush to get home for the cold. In fact, I didn't have headwear on, but I didn't get cold ears. It was about the same temperature as this morning, but the difference is that this morning felt a lot colder, probably due to the wind and drizzle.  I tried to describe it in English on Twitter, but I couldn't actually find a proper word to decribe it. I considered "a warm cold" or "a cozy cold", but I thought these were too poetic, more like something you'd use in a fairy tale than in a tweet to a handful of followers.  How can you describe that temperature without it becoming confusing or poetic?
75603
How do bats survive their own coronaviruses (without showing any symptoms)?  Or, more generically, how can viruses keep reproducing inside healthy carriers without inducing any pathogenic effect?  Are coronaviruses able to replicate themselves without harming bats, or maybe these viruses are just latent like herpesviruses in humans?    Related question:
2618
I have been thinking that temporary hit points were like virtual health as per:     Temporary hit points aren’t actual hit points; they are a buffer against damage, a pool of hit points that protect you from injury.   The fact that's virtual makes me think that you don't actually get hit per se. That is, you'd get out without even a scratch if you only lose temporary hit points (i.e. protect you from injury).  However, I have not seen anything anywhere saying that if you are bitten by a creature such as a spider and only lose temporary hit points, you don't get poisoned. Yet, if you don't even sustain a scratch, how could you get poisoned or paralyzed or sick?  How do you guys understand the rules in such circumstances?
3331
We know that if you (using Polyjuice), take the form of someone who had been injured, you assume that injured form (e.g. Barty/Moody). If you are injured, presumably you would be uninjured while under Polyjuice. My question is, is this in real-time? That is, if you take a Polyjuice, and while you're still under its effects, the person being transformed into gets injured (or even dies), will that injury be transferred onto you? And conversely, if you get injured while in someone else's body, will that transfer over to your real body after the Polyjuice wears off, will it disappear, or will it go to the person you turned into?
12748
Some conditions require that a person lie in bed all the time until recovered. Is there a name for such conditions or people experiencing them at the moment?   For example,      I am currently &lt;bed sick&gt; and can't help you with your homework.   I tried looking for bed sick but hit a dead end.
53891
In the past month, I've been really busy with the university and stuff, and I don't sleep as much as I used to. I usually sleep 4-5 hours a night.  I haven't been doing that extensively ( I always kept a good sleeping routine), but can the lack of sleep affect my health on the long term ?
79449
I have heard even passive smokers are subjected to many health issues even though they don't smoke directly. What are the issues related to health that can occur in the passive smokers, and does it includes any long term effects on health?
30983
Can ACE2 be produced and used as drug against covid? I read it is the receptor molecule. If it is in the organism the virus should bind to it and could not attack cells anymore? Is that right?
33193
My 3-year-old has had chickenpox for about 2-3 days, but a close friend has just had a baby and I want to go and help. Is it possible that I am infectious, despite not having the illness? I had it as a child, so (hopefully) can't actually get it myself. Thanks!
20505
The current prognosis for a COVID-19 vaccine to become available is "12-18 months" and a big part of the reason for such a long timeline is the fact that scientists want to ensure that the vaccine is safe enough. But did this ever happen in practice? An article on CNN mentions the :      In 1976, President Gerald Ford's administration reacted at speed to a novel swine flu outbreak, ignoring the World Health Organization's words of caution and vowing to vaccinate "every man, woman and child in the United States." After 45 million people were vaccinated, the flu turned out to be mild. Worse, researchers discovered that a disproportionately high number of the vaccinated -- roughly 450 in all -- had developed Guillain-Barré syndrome, a rare disorder in which the body's immune system attacks the nerves, leading to paralysis. At least 30 people died. Upon discovery of the risk, the program was terminated in late 1976. A crush of lawsuits against the federal government followed.   However this looks like a very rare complication, only causing problems for 1 in 100,000 patients. And even that complication could've been detected :     About a week after getting the swine flu shot, she recalled, “I was so weak I couldn’t push down the toaster button.” She spent a month in the hospital, paralyzed from the neck down, before gradually recovering.   So has there ever been a vaccine trial satisfying the following conditions?   Significant side effects were detected Those side effects appeared in otherwise healthy candidates after more than 3 months since they were injected with the vaccine These side effects were something other than birth defects (those obviously take up to 9 months to show up)   If not, what causes scientists to be so cautious about testing a new vaccine quickly?
67935
Is "flu" the only disease usually accompanied with "the"? From what I understand, you don't usually use "the" with diseases / illnesses / disorders ("have Alzheimer's / diarrhea / claustrophobia / dyslexia, etc." not "have the..."), but it's perfectly normal to say "have the flu". Is the flu the only exception?   Edit (this is only a side part, and can be glossed over if you will, so it's not a duplicate imo): What's so significant about the flu that other conditions don't have, so that it's entitled to "the"?