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Lack of Sleep Puts You At Higher Risk For Colds, First Experimental Study Finds

sciencehabit writes: Moms and sleep researchers alike have stressed the importance of solid shuteye for years, especially when it comes to fighting off the common cold. Their stance is a sensible one—skimping on sleep weakens the body's natural defense system, leaving it more vulnerable to viruses. But the connection relied largely on self-reported, subjective surveys—until now (abstract). For the first time, a team of scientists reports that they have locked down the link experimentally, showing that sleep-deprived individuals are more than four times more likely to catch a cold than those who are well-rested.

86 comments

  1. duh? by Anonymous Coward · · Score: 0, Redundant

    anyone not know this already?.. it seems pretty obvious

    1. Re:duh? by Anonymous Coward · · Score: 0

      *sigh* Yeah. It seems obvious. But we use science to prove our intuition correct.

      Jesus, we wouldn't get anywhere if the world were full of people like you. The theory of gravity is just a no-brainer waste of time because, duh, obviously things fall down.

    2. Re:duh? by __aaclcg7560 · · Score: 1

      Like the earth being flat seems pretty obvious?

    3. Re:duh? by hey! · · Score: 4, Interesting

      Knowing it in principle and knowing when to put that knowledge to work are two different things.

      I used to catch *everything* that was going around, including some things most other people didn't. I got sick three, maybe four times a year. I always put it down to having a lousy immune system, until in one checkup I mentioned to my doctor that I'm a pretty loud snorer. "Better have you checked for sleep apnea," he said, and sure enough I had it, although only a relatively mild case. He prescribed sleeping on a CPAP machine, and since I've been doing that I almost never get sick. Maybe once in four years.

      Anecdotal evidence, I know, but my point is this. Now that there's research demonstrating the impact of sleep on immune system performance it makes sense to make questions about sleep quantity and quality a routine part of health surveillance. I just happened to mention snoring to my doctor on one visit; if I'd been asked twenty years earlier it would have saved my employers a lot of sick time and me a lot of misery.

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    4. Re:duh? by hey! · · Score: 3, Funny

      Jesus, we wouldn't get anywhere if the world were full of people like you.

      Um...

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    5. Re:duh? by Forgefather · · Score: 1

      The point is that the relationship between sleep and the strength of the immune system has been well know and tested for years so it's obvious that if you have a stronger immune system that you would be more resilient to getting a cold.

      --
      "There are lies, there are damn lies, and there are statistics"
    6. Re:duh? by hey! · · Score: 1

      The point is that the relationship between sleep and the strength of the immune system has been well know and tested for years...

      For a certain value of "well-known" and "tested". You could actually read the paper abstract and see what was novel about this particular study.

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    7. Re:duh? by sjames · · Score: 1

      And yet the average American gets too little sleep routinely.

    8. Re:duh? by Anonymous Coward · · Score: 0

      Man, you must have been saving that up since first grade. Brilliant insight.

    9. Re:duh? by Anonymous Coward · · Score: 0

      I blame my 2yr old

    10. Re:duh? by Marginal+Coward · · Score: 1

      anyone not know this already?.. it seems pretty obvious

      Yeah, aren't you just sick and tired of articles about being tired and sick? To be fair, though, this was news to me: maybe I've read things like this before, but if so the concept probably just didn't sink in, what with all the fatigue-driven-illness I've been experiencing lately...

    11. Re:duh? by mark-t · · Score: 1

      The earth being flat does not measure up to even very basic observation, as long as you are stickler for detail and consistency.

    12. Re:duh? by NoKaOi · · Score: 1

      anyone not know this already?.. it seems pretty obvious

      Pretty obvious the world is flat too, but it's helpful to use the scientific method to confirm whether or not it actually is.

    13. Re:duh? by PopeRatzo · · Score: 1

      I blame cocaine and the Cartoon Network.

      --
      You are welcome on my lawn.
    14. Re:duh? by Anonymous Coward · · Score: 0

      Only if you're stupid. Like, creimer-level.

      https://en.wikipedia.org/wiki/...

    15. Re:duh? by Anonymous Coward · · Score: 0

      Still lots of people believed that were reality and they did it for a long time.

    16. Re:duh? by Anonymous Coward · · Score: 0

      little kids, full time job, the bitch ran away, I still have to pay - the research is good, the observation may be vital, it still helps as fuck.

    17. Re:duh? by fendragon · · Score: 2

      A better example would be believing the earth is the centre of the universe and the sun goes round it. Copernicus had a real struggle to convince people that what was "obvious" wasn't actually true.

    18. Re:duh? by fey000 · · Score: 2

      We'd be pretty far along on the carpentry stuff though. Cause you know, he kinda nailed it.

    19. Re:duh? by angel'o'sphere · · Score: 1

      Anecdotal evidence
      Anecdotal evidence is evidence just like any other evidence.
      No idea why americans believe otherwise.

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
    20. Re:duh? by hey! · · Score: 1

      You can use different kinds of evidence different ways. Credible anecdotal evidence can disprove some things, or it can suggest other things, but for the most part can't prove that one thing causes another.

      Example: Suppose my friend Larry gets lung cancer a few years after he quit smoking. This disproves the notion that if you quit smoking you are guaranteed not to get lung cancer. It suggests that smoking causes long-term damage to the cells of the lung. It doesn't prove that quitting smoking causes cancer.

      Randomized controlled studies are generally the most useful evidence points when it comes to trying to prove causation, but individual studies still can't do that. What you need is a pattern of evidence that includes RCTs and other, independent lines of inquiry.

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    21. Re:duh? by tehcyder · · Score: 1

      I got sick three, maybe four times a year.

      That sounds pretty standard to me if you're just talking about colds.

      --
      To have a right to do a thing is not at all the same as to be right in doing it
    22. Re:duh? by mark-t · · Score: 1

      Yes... but only because they weren't observant. In the third century, a famous mathematician from Greece deduced that the Earth was round by relatively casual observation, and using the crude measuring devices available at the time estimated the size of the earth to well within 15% of its actual size, which really isn't half bad for the era.

    23. Re:duh? by Anonymous Coward · · Score: 0

      This is a canard. Not only did the Greeks of ancient times know the Earth was round, anyone who had any kind of ship using experience knew it too. At sea the curvature of the Earth is quite obvious. As a matter of fact most ancient people universe myths sought to account for the curvature. Hence the Earth as a turtle, or on the back of a turtle. Turtle shells are convex.

    24. Re:duh? by angel'o'sphere · · Score: 1

      That is not an anecdotical evidence, it is no evidence at all.

      If the official weather history says, Karlsruhe, the town I live hat its hottest day 9th and 13th of august in 2002 with a temperature of 40.2 degrees celsius.

      However I measured on my balcony at a different date 48 degrees celsius. That is my evidence, it is anecdotical as it is only a "story" told by me. So typical american reaction: that anecdotical evidence is no evidence. However: I have a photo :D but without a date ... so?

      --
      Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
  2. Okay... by Anonymous Coward · · Score: 0

    Did taxpayer funds pay for this amazing revelation?

    1. Re:Okay... by Anonymous Coward · · Score: 2, Insightful

      So what if they did? You're an idiot if you think we shouldn't be studying things that "everyone knows".

  3. Count me in by Anonymous Coward · · Score: 1

    Count me in as a data point. Every time I undersleep I get the sniffles. if I undersleep and am exposed to cold weather, it's game over. Every time I oversleep after getting those sniffles I get better, if not outright lose them. I also notice that other healing processes in my body work a lot better after getting good sleep. Headaches, ear aches, all sorts of minor maladies that I've had over the years (I'm 28).

    This is also one more reason to hate public schools. The early morning starts are doing the children a huge disservice by stunting their brain and body development, plus the classrooms are penning up underslept students with weakened immune systems and easily transmittable diseases. This is what you do to lab animals, not people. I've had colds on a regular basis while going to school, and I knew why. Thankfully everyone else now knows too.

    1. Re:Count me in by Anonymous Coward · · Score: 0

      I'm do jealous of my High school 3 year after I graduated they move the starting time from 8am to 9am. I guess it took me pounding it it there heads for 10+ years that mornings suck for learning.

    2. Re:Count me in by Schmorgluck · · Score: 2

      I'm not very prone to colds, but it's my experience that when I'm sleep-deprived, I feel much more sensitive to cold weather. It's interesting to see it wasn't just an impression of mine, and if I stop being lazy I may read the full article, to see if they have found what mechanisms are at play.

      --
      There's nothing like $HOME
    3. Re:Count me in by Schmorgluck · · Score: 1

      Or, at the very least, if they have interesting suppositions, that they may eventually turn into hypotheses or theories.

      --
      There's nothing like $HOME
    4. Re:Count me in by Anonymous Coward · · Score: 1

      I think the ultimate conclusion is that sleep is when the body performs full repair and maintenance, not just neuronal management confined to the braincase. Perhaps the metabolic changes that occur during sleep accelerate repair mechanisms in the rest of our organs as well. IANABiologist.

    5. Re:Count me in by techno-vampire · · Score: 1

      The early morning starts are doing the children a huge disservice...

      Don't blame that entirely on the school system. Parents who let their children stay up late and don't make sure that they get enough sleep (Children need more sleep than adults do.) are just as much at fault, if not more so.

      --
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    6. Re:Count me in by Anonymous Coward · · Score: 1

      Parents who let their children stay up late and don't make sure that they get enough sleep (Children need more sleep than adults do.) are just as much at fault, if not more so.

      Absolutely agree that children need more sleep than adults. However, they are not necessarily able to fall asleep at the needed time to be ready for school. My parents sure as hell tried to get me to go to bed early, but I all I did after getting to bed is toss and turn for hours. I think a lot more children and adolescents are afflicted with delayed sleep phase disorder than we think.

    7. Re:Count me in by tehcyder · · Score: 1
      If schools have early morning starts, you just need to make your kids go to bed early. It's not rocket surgery.

      As an adult, I have just had to learn that if I need to be up at 6 to go to work, I can't stay up until 3 and expect to feel anything but knackered all day.

      --
      To have a right to do a thing is not at all the same as to be right in doing it
    8. Re:Count me in by tehcyder · · Score: 1

      Parents who let their children stay up late and don't make sure that they get enough sleep (Children need more sleep than adults do.) are just as much at fault, if not more so.

      Absolutely agree that children need more sleep than adults. However, they are not necessarily able to fall asleep at the needed time to be ready for school. My parents sure as hell tried to get me to go to bed early, but I all I did after getting to bed is toss and turn for hours. I think a lot more children and adolescents are afflicted with delayed sleep phase disorder than we think.

      Maybe, but it helps if you don't let them have TVs, iPads or mobile phones in their rooms when they go to bed...

      --
      To have a right to do a thing is not at all the same as to be right in doing it
  4. Better by Anonymous Coward · · Score: 0

    is to not go outside when it's cold and you are wet. Sure way to catch one.

    1. Re:Better by dmr001 · · Score: 4, Insightful

      Turns out going outside when it's cold and wet pretty much never makes a difference in the normal course of things. Hypothermia is the exception, and for the most part that means going outside cold, wet, and without much clothing for prolonged periods of time to the extent you're likely chattering the daylights out of your teeth.

      This is an important finding since current parenting styles (at least in temperate areas of the US) often include keeping the kids inside much of the winter to prevent them from getting sick. The consequent lack of exercise and being in close quarters with disease vectors (other kids) yields the result of sick, fat kids. I tell my patients to send little Cindy and Juan outside with a good coat when it's cold and wet, unless the little buggers are going to slip on the ice or are shedding genuine tears of misery in a prolonged fashion, which I personally think is good advice for grown up nerds as well, present company included.

    2. Re:Better by HornWumpus · · Score: 1

      No.

      Yellow eye burns!

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    3. Re:Better by Trogre · · Score: 1

      Asthma is another exception, which is not mentioned in that article.

      --
      "Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
    4. Re:Better by DigiShaman · · Score: 1

      Not cold and wet, but when it's cold and dry, yes. Studies have proven that the virus hand around longer in dry climate, and that the reason you have a runny nose is the body's attempt and snuffing it out with moisture.

      --
      Life is not for the lazy.
    5. Re:Better by tehcyder · · Score: 1

      I thought the old wives' tale about getting wet/cold and catching a cold had been debunked years ago?

      --
      To have a right to do a thing is not at all the same as to be right in doing it
  5. In studying lack of sleep, they should have more carefully studied the snotlike liquid found in the beds of people who woke up several times per night, before concluding they had colds.

    --
    (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
  6. I find this mostly true, some mixed causation... by RyanFenton · · Score: 0

    Most of the colds I've encountered have made it significantly more difficult to sleep. That's actually why I'm home today - taking a rare sick day for an otherwise symtomless cold that just left me 'static-y' without letting me really sleep. No nagging mental troubles, no troubles previous nights, no cough, no caffeine or diet issues I could tell - just a steady heartbeat/mental state that wouldn't actually trigger a proper dream state all night. Had earplugs, sleeping mask, and a nice zen state to dismiss any stray distractions - just resulted in a lightly relaxed trip to dawn. Definitely seemed a physical thing rather than a physical one

    I can definitely picture a virus/bacteria amongst trillions in a body focusing on this approach in order to create a niche to reproduce in. Just got to trigger/immitate one signal pathway, and boom, whole body is weakened, and the body is all too happy to play 'security theater' in order to be careful.

    Ryan Fenton

  7. I am a counter example. by Anonymous Coward · · Score: 0

    I rarely get colds and I don't get a lot of sleep, last night for instance was about 5 hours, and that's pretty much normal. Did any of these propeller heads stop to think that the more time you spend sawing logs, the less time you're around other people and at risk of catching a bug?

    1. Re:I am a counter example. by jklovanc · · Score: 1

      This is not a proof. Does the 90 year old chain smoker disprove that cigarettes cause cancer?

    2. Re:I am a counter example. by thoromyr · · Score: 1

      For many people, especially smokers who know such an individual personally, the answer is yes, it does disprove that cigarettes cause cancer. After all, if it doesn't happen with 100% replicability then it isn't real. Right?

      The same is true for most everything else. If someone doesn't habitually consume toxins (tobacco, alcohol, whatever), eats well (lots of leafy greens and fruit in addition to meat and some grains), and exercises moderately and regularly -- but still gets sick and doesn't live to be 120 -- then you have proof that a healthy life style doesn't make you live longer. And lets not even consider the odd cases where someone like that dies young from inexplicable causes.

      In short, if something does against what a person *wants* to be true, it had better be 100% or it stands a snowball's chance of convincing them.

  8. Did somebody get paid for this study? by Anonymous Coward · · Score: 0

    I could have given you that information at no charge. Somewhere, there is a 1-2-3-???-4-Profit!!! list that could be built...

  9. Re:I find this mostly true, some mixed causation.. by RyanFenton · · Score: 0

    >>Definitely seemed a physical thing rather than a physical one.

    Meant phyical rather than a mental one. I must reiterate - I am rather sleepy today - still can't get a nap going, and am now in that stage of the day where it's better to wait for night at this point. Thus, slashdot.

    Ryan Fenton

  10. Re:I find this mostly true, some mixed causation.. by Anonymous Coward · · Score: 1

    Get some exercise. The sleep of a laboring man is sweet.

  11. Melatonin by codeButcher · · Score: 3, Interesting

    Interested people might want to go read up on melatonin: how it is produced most effectively, and what its effects are on health. Obviously, it is an area that still requires a lot of study to be conclusive, but I suspect that this hormone plays a large part in the effect demonstrated in this study.

    --
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  12. No TV and No Beer make Homer something.. something by Anonymous Coward · · Score: 1

    yup.

  13. Up Next! by KatchooNJ · · Score: 1

    Up Next! Too much food can make you fat! Stay tuned.

    Fighting the frizzies at 11.

    --
    "Never give up, for that is just the time and place when the tide will change." -Harriet Beecher Stowe ^_^
    1. Re:Up Next! by The-Ixian · · Score: 1

      Perhaps I could get funding for a study to prove that imbibing liquids directly correlates to excretion of liquids...

      --
      My eyes reflect the stars and a smile lights up my face.
    2. Re:Up Next! by Dorianny · · Score: 5, Informative

      Up Next! Too much food can make you fat! Stay tuned.

      Fighting the frizzies at 11.

      Some of the most profound discoveries have come from experiments verifying established knowledge, yielding unexpected results. Rutherford's discovery of the atomic nucleus resulted from just such an experiment.

    3. Re:Up Next! by tehcyder · · Score: 1

      Some of the most profound discoveries have come from experiments verifying established knowledge, yielding unexpected results. Rutherford's discovery of the atomic nucleus resulted from just such an experiment.

      Wow, he was experimenting with colds and sleep and he accidentally the atomic bomb?

      --
      To have a right to do a thing is not at all the same as to be right in doing it
  14. Old News by jklovanc · · Score: 1

    Here is an article from 2010.

  15. Why? by Anonymous Coward · · Score: 0

    Why is this on Slashdot? A computer website...

    1. Re:Why? by tehcyder · · Score: 1

      Why is this on Slashdot? A computer website...

      Slashdot's motto is"News for Nerds" and this does not refer purely to computer nerds. There were nerds before computers were even invented.

      --
      To have a right to do a thing is not at all the same as to be right in doing it
    2. Re:Why? by Anonymous Coward · · Score: 0

      Oh you poor wittle asspie. What's wrong, jealous that other nerds have jobs and you don't because you hide behind your fake disease called assburgers? Last night after I fucked your mommy's pussy so fucking hard she is going to be kicking you out on the fucking street because you don't want to get a fucking job and you have no fucking money because your SSI checks are going towards your worthless obsessions that are a huge waste of fucking money. Well that is what you fucktarded asspies get for being a huge fucking burden on society.

  16. Yes! We all know that! by fustakrakich · · Score: 1

    But our mothers, wives, girlfriends, employers, etc etc etc just won't listen! We need our beauty sleep. Up at the crack of noon.

    --
    “He’s not deformed, he’s just drunk!”
  17. As if... by OhSoLaMeow · · Score: 2

    As if women needed another excuse to refuse sex.


    Oh, wait...

    --
    They can take my LifeAlert pendant when they pry it from my cold dead fingers.
  18. For some people. by Anonymous Coward · · Score: 1

    I love generalizations like this study. I'm a very short term sleeper. 2-4hrs/night average. Been like this my entire life (over 30yrs now). Last time I had a cold that put me in bed I was in high school. I cannot recall the last time I had one that kept me from a day of work. Last time I had the flu... I think I was 17. It's been so long it's difficult to recall now.

    No doubt everything is on a bit of a curve. To say "everyone" is far to generalized.

    1. Re: For some people. by Anonymous Coward · · Score: 0

      If you need only 2 hours you are not a human. You are a fly.

  19. It's more than just getting sick... by Anonymous Coward · · Score: 0

    You get sicker, and stay sick longer. Look around at all your coworkers who are pulling 80 or 100+ hour weeks. Look at what happens with a cold virus comes into the office. The managers are better in a day or two. The heavily overworked staff takes a lot longer to recover.

    And sometimes they don't recover. Sometimes they die.

  20. More Obvious Than That by Etherwalk · · Score: 2

    anyone not know this already?.. it seems pretty obvious

    Pretty obvious the world is flat too, but it's helpful to use the scientific method to confirm whether or not it actually is.

    Actually, it's pretty obvious that the world is round if you have some basic math. Or stand up on a westward-facing beach and watch the sun set a second time. We've known the world was round since way before Columbus, it's just that we could do the math and knew it was WAY too far around the ocean to India to make it, so nobody else was stupid enough to try. Columbus was REALLY lucky there was a landmass in the middle.

    However, in my experience the connection between colds and sleep is even more obvious. The more sleep you have, the weaker the cold becomes, and vice-versa. Vary your sleep a little and you'll see it's as directly observable as "When I drop a rock on my foot, OUCH!"

  21. Re:I find this mostly true, some mixed causation.. by TeknoHog · · Score: 1

    Get some exercise. The sleep of a laboring man is sweet.

    That's some facepalmy advice for a person with cold, especially if they have fever.

    --
    Escher was the first MC and Giger invented the HR department.
  22. Early to bed... by PopeRatzo · · Score: 2

    Lack of sleep puts you at risk for just about everything in the way of illness.

    Go to bed, people. Don't look at any screens for at least a half-hour before you hit the pillow and it will help you fall asleep.

    Sleep is wonderful. Get 8-9 hours if you can. The longer you sleep the more you'll dream and dreams (even nightmares) are crucial for good mental and physical health. In fact, some of the best days I've ever had seemed to come after a night with one of those nightmares where you wake up shouting, jumping off the bed and grasping the covers.

    Artificial lighting has screwed us up a bit. If I could, I'd go to bed a few hours after dark and wake up at dawn every day. I do it during the summer, but where I live it gets dark pretty early in the winter.

    --
    You are welcome on my lawn.
    1. Re:Early to bed... by mjwx · · Score: 1

      Lack of sleep puts you at risk for just about everything in the way of illness.

      Might be related, but when I get sick I tend to sleep a lot. The last bout of Man Flu I got I only emerged from bed to seek food and sometimes medication.

      But for me, the number 1 reason that I get sick is the fact I work in the middle of an open plan office (AKA an incubator). I get subject to every airborne illness that any other worker carries in, I swear they're actually fighting in a battle royale to determine which one will infect me.

      --
      Calling someone a "hater" only means you can not rationally rebut their argument.
    2. Re:Early to bed... by tehcyder · · Score: 1

      The last bout of Man Flu I got I only emerged from bed to seek food and sometimes medication.

      If you can still eat, it's not real Man Flu, it's just a cold.

      Also, didn't you have to go to the bathroom?

      --
      To have a right to do a thing is not at all the same as to be right in doing it
    3. Re:Early to bed... by mjwx · · Score: 1

      Also, didn't you have to go to the bathroom?

      Not as much as you'd think.

      Also, buckets are handy.

      --
      Calling someone a "hater" only means you can not rationally rebut their argument.
  23. Damn these trifocals... by jpellino · · Score: 1

    I though it said "sheep".

    --
    "Win treats sysadmins better than users. Mac treats users better than sysadmins. Linux treats everyone like sysadmins."
    1. Re:Damn these trifocals... by tehcyder · · Score: 1

      I though it said "sheep".

      Welsh? Kiwi?

      --
      To have a right to do a thing is not at all the same as to be right in doing it
  24. Con Crud by techno-vampire · · Score: 2

    Everybody who goes to conventions, especially conventions for hobbies, SF, fantasy, mystery, gaming or media interests knows what con crud is. It's a type of cold or flu-like disorder that many people come down with either at those conventions or just after. Not everybody gets it, of course, and few people get it every time, but as long as there are a few people there who are in the contagious stage, it's going to be passed around. I've been lucky, so far, because in several decades of attending SF and media cons I've never come down with it. I also try to make sure that I get adequate sleep while I'm enjoying the con and that just might be why I've been immune to it. Remember, if you want to come home healthy, don't insist on partying all night, every night and be sure to eat at least one healthy meal every day.

    --
    Good, inexpensive web hosting
  25. What does this mean? by Anonymous Coward · · Score: 0

    What does this research indicate, given the following scenario:

    Two groups of people, the first group well rested, second group sleep deprived.
    And I place one extra guy who is suffering from the cold already with either group separately for 1 day each

  26. more for the pre existing conditions list by Joe_Dragon · · Score: 1

    more for the pre existing conditions list and you boss can hold it over you with the GOP wins

    Well bob you can keep working the OT or we can get rid you and you will have a very hard time being able to pay for a doctor ever again.

  27. Known fact by Anonymous Coward · · Score: 0

    It's a well known, well studied fact that less sleep or the lack thereof reduces immunity levels. Obvious repercussion is that you can catch whatever's going around - common cold, flu, etc. Where's the news!

  28. First experimental study? by physicsdot · · Score: 1

    This would be news to Cohen, S., Doyle, W. J., Alper, C. M., Janicki-Deverts, D., & Turner, R. B. (2009). Sleep habits and susceptibility to the common cold. Archives of Internal Medicine, 169(1), 62–67. doi:10.1001/archinternmed.2008.505 "Background: Sleep quality is thought to be an impor- tant predictor of immunity and, in turn, susceptibility to the common cold. This article examines whether sleep duration and efficiency in the weeks preceding viral ex- posure are associated with cold susceptibility. Methods: A total of 153 healthy men and women (age range, 21-55 years) volunteered to participate in the study. For 14 consecutive days, they reported their sleep dura- tion and sleep efficiency (percentage of time in bed ac- tually asleep) for the previous night and whether they felt rested. Average scores for each sleep variable were calculated over the 14-day baseline. Subsequently, par- ticipants were quarantined, administered nasal drops con- taining a rhinovirus, and monitored for the develop- ment of a clinical cold (infection in the presence of objective signs of illness) on the day before and for 5 days after exposure. Results: There was a graded association with average sleep duration: participants with less than 7 hours of sleep were 2.94 times (95% confidence interval [CI], 1.18-7.30) more likely to develop a cold than those with 8 hours or more of sleep. The association with sleep efficiency was also graded: participants with less than 92% efficiency were 5.50 times (95% CI, 2.08-14.48) more likely to develop a cold than those with 98% or more efficiency. These relation- ships could not be explained by differences in prechal- lenge virus-specific antibody titers, demographics, sea- son of the year, body mass, socioeconomic status, psychological variables, or health practices. The percent- age of days feeling rested was not associated with colds. Conclusion: Poorer sleep efficiency and shorter sleep du- ration in the weeks preceding exposure to a rhinovirus were associated with lower resistance to illness."

    1. Re:First experimental study? by Agent0013 · · Score: 1

      For 14 consecutive days, they reported their sleep dura- tion and sleep efficiency (percentage of time in bed ac- tually asleep) for the previous night and whether they felt rested.

      It isn't said to be the first study. Only the first one that didn't rely on self reporting of amount of sleep. They used monitors to measure their sleep before the administration of the cold virus, then they were kept in the lab and their sleep was again measured. Self reporting is pretty notorious for being incorrect.

      --

      -- ssoorrrryy,, dduupplleexx sswwiittcchh oonn.. -Quote found on actual fortune cookie.
    2. Re:First experimental study? by physicsdot · · Score: 1

      You are right, it isn't said to be the first study. It *is* said to be the "first experimental study". Which it is not.

  29. My Theory by kackle · · Score: 1

    I didn't take care of my teeth as well as I should have when I was younger. Coincidentally, I always had minor nasal issues, especially when I first woke up. I assumed that frequently stuffy and occasional bloody noses in the morning were just parts of life. After I grew older and started aggressively taking care of my teeth, all those problems disappeared at the same time, and those nasal issues turning into colds vanished. Further, they all show up again if, for some reason, I don't take of my teeth for a night or two.

    It never dawned on me that there is a moist, 100-degree Fahrenheit tube of only a few inches that any germs could travel within the 8 hours of being horizontal that could lead to such nasal infections.

    I wonder whether someone who is not disciplined to get enough sleep also does not take care of his mouth.

  30. What about allergies? by antdude · · Score: 1

    Does lack of sleep affect that too? I noticed my body is more sensitive from them. :(

    --
    Ant(Dude) @ Quality Foraged Links (AQFL.net) & The Ant Farm (antfarm.ma.cx / antfarm.home.dhs.org).
  31. Re:I find this mostly true, some mixed causation.. by dkman · · Score: 1

    But it's good advice for a healthy person.

    If you sat in your office chair all day, then went home and binge watched Game of Thrones and tried to go to sleep you may not get good rest. But if you put of that last episode to go for a 30 minute jog, took a shower, then went to bed your body is much happier to get a good night's rest.

    We're not meant to be sedentary creatures. That's what he was trying to say.

    A sick person is supposed to get plenty of rest, however.

    --
    I refuse to sign
  32. What worked for me . . . by Joey+Vegetables · · Score: 1

    YMMV, but I went from 3-4 bad colds a year, to maybe one mild one every other year, when I started supplementing with vitamins C (1000mg/day), D (4800IU/day), magnesium, and zinc. I've been horribly insomniac all my life, but I still never get colds, even though I'm around children all the time, a lot of them get sick, blow their nose or puke on me, etc., and I almost *never* get their colds or GI bugs. Our own kids also stopped getting them when we started supplementing, and they're around sick kids even more than I am. I really do believe that vitamins C and D are things our immune systems need but don't usually get enough of, and that if we do get them, then getting a mild viral infection should be an exceptional circumstance, not a normal one. I'm also not discounting the value of sleep. My extreme lack thereof causes or contributes to many other health problems (depression, anxiety, lack of concentration or short-term memory, obesity, hypertension, insulin and leptin resistance, etc.). However, in spite of all this, and what I would consider generally poor health overall, I almost never get colds anymore. The supplements are cheap, and, in the quantities I take them, very unlikely to cause any other health problems. I strongly recommend them.