home
RSS
5 studies you may have missed
April 11th, 2014
11:46 AM ET

5 studies you may have missed

Here's a roundup of five medical studies published this week that might give you new insights into your health, mind and body. Remember, correlation is not causation – so if a study finds a connection between two things, it doesn't mean that one causes the other.

Germophobes beware: Coughs and sneezes create floating clouds
Journal of Fluid Mechanics

The next time you hear an "achoo!" nearby, shield yourself. A new study shows people blow out gas clouds when they sneeze or cough - and these clouds propel germs further than previously thought.

Scientists at MIT studied how coughs and sneezes move in slow motion using high-speed imaging, in addition to mathematical modeling techniques and simulations. They found that coughs and sneezes have two phases: A quick, jet-like propulsion of droplets, and then a "puff" in which the droplets are suspended in a gas cloud.

When the researchers analyzed the trajectory of the expelled particles, they found that relatively large droplets in the clouds - measuring 100 micrometers in diameter - moved five times further than previous studies had shown. The smaller ones, 10 micrometers across, traveled 200 times farther.

So stop the spread of disease by covering your coughs and sneezes.

Fathers' obesity may be related to children's autism
Journal: Pediatrics

As scientists continue to explore the potential causes of autism, a question has been raised about paternal obesity.

Researchers looked at a large sample of 92,909 children from the Norwegian Mother and Child Cohort Study. The children were between 4 and 13 years old.

Although a mother's weight was only weakly linked with autism in her child, an obese father was associated with a significant increase in risk. Children of obese fathers had a 0.27% likelihood of an autistic disorder, compared to 0.14% for children whose fathers were at a normal weight.

The general risk of an obese father having a child with autism is still small, study authors noted, but the association is worth further study.

"It would definitely be beneficial to replicate our analyses in population studies from other countries," lead researcher Dr. Pal Suren, of the Norwegian Institute of Public Health in Oslo, told HealthDay News.

Read more from HealthDay News via WebMD

Exercise may help older women’s brains
British Journal of Sports Medicine

Mild cognitive impairment is a condition affecting memory and thinking that is a risk factor for Alzheimer's disease and dementia. We don't know how to prevent or cure MCI, but there is some indication that exercise may help.

A new study looked at 86 women between the ages of 70 and 80 who had probable mild cognitive impairment. The women were randomly assigned to aerobic exercise, resistance training, or balance and tone training (the control group) for 26 weeks. Researchers measured the volume of the hippocampus, a brain structure involved in memory, in participants before and after the interventions.

Those who had done aerobic exercise showed bigger hippocampal volume after the intervention, compared to the group that did balance and tone. Those who did resistance training did not show the benefit.

Strangely, those who had larger hippocampal volume also tended to score worse on a verbal learning test. This was a small study and more research is needed to explain the findings.

Read more from The Atlantic

Cells involved in touch identified
Journal: Nature

Scientists have uncovered how cells that lie under the surface of your skin allow you to perceive details and textures. These cells are called Merkel cells.

“These experiments are the first direct proof that Merkel cells can encode touch into neural signals that transmit information to the brain about the objects in the world around us,” researcher Ellen Lumpkin said in a statement.

The work could have implications for understanding conditions in which touch sensitivity is lost. Sensitivity also declines with normal aging; at the same time, Merkel cells start disappearing in people in their early 20s.

“It’s an exciting time in our field because there are still big questions to answer, and the tools of modern neuroscience give us a way to tackle them,” Lumpkin said.

Read more from Columbia University

Junk food may bring on laziness - in rats
Journal: Physiology & Behavior

Poor eating habits may not only expand your waistline, but also make you less motivated, a new study suggests.

Researchers fed some rats a low-fat diet that was high in simple sugars and refined flour, and others a healthier diet. All rats learned that they would be able to get a bit of sugar water as a reward for pressing a lever. The number of lever presses required to access to the reward increased during the experiment.

Eventually both sets of rats tired of this exercise, but junk-food rats gave up a lot sooner than the ones who had a healthy diet. Both groups seemed to have similar energy levels, so researchers believe there's something happening in the brains of the ones eating poorly to explain the behavior difference. More research is required to find out if that's true.

Note that this research was in rats, so we don't know how it will apply to humans. Still, lead author Aaron Blaisdell told the LA Times: "Rats are a great animal model for humans because there is so much overlap in the systems that regulate appetite and metabolism."

Read more from the LA Times


soundoff (17 Responses)
  1. ser

    bless you.

    April 11, 2014 at 12:05 | Report abuse | Reply
  2. Lojack

    I think I need to stimulate my Merkel cells!

    April 11, 2014 at 12:09 | Report abuse | Reply
  3. mark

    What did I miss? The article doesn't say how far they actually travel rather that they just travel further than thought?

    April 11, 2014 at 14:31 | Report abuse | Reply
    • tradedate

      I was thinking the same thing! Also, if no tissue was available, I was always taught to sneeze on the arm of my shirt, rather than into my hands. Less germs get spread to other surfaces and people that way.

      April 14, 2014 at 10:39 | Report abuse |
  4. svann

    Cover your mouth when you sneeze. Thats so rude.

    April 12, 2014 at 01:08 | Report abuse | Reply
  5. Joe

    It's rude, thoughtless, stupid, low-class, vulgar.....ie basically today's society (or at least its direction) in a nutshell.

    April 12, 2014 at 10:39 | Report abuse | Reply
  6. barb'sbarb

    If you cannot sneeze or cough into your hands, turn your head and bring up your upper arm and sneeze into that. Do not spread your germs!!

    April 12, 2014 at 19:28 | Report abuse | Reply
  7. gstlab3

    someone if you would please tell my mom that just using a tissue while blowing and sneezing will not stop the sneaky mucus booger cloud?
    she wanders around the house and most anywhere blowing and sneezing into the tissues and she is apt to leave the used tissu on a table or counter top some place random and darn it., it is all pretty gross.

    April 12, 2014 at 22:05 | Report abuse | Reply
  8. gstlab3

    wash your hands after blowing boogers around into tissues and maybe you should also check your face and shirt while you're at it.
    boogers and other bodily fluids are gross

    April 12, 2014 at 22:07 | Report abuse | Reply
  9. gstlab3

    I forgot the most important vector for the common plauges like the common cold and the flu.,
    children little booger faced children need to be kept in special zones away from the people who do not have children because every year the same thing happens when schools starts and stops.,
    new colds and other bogus health stuff goes on and it is because children are not clean and or are not kept clean enought to stop the spread of boogers full of colds and flu bugs and stomache bugs and lord knows what else.

    April 12, 2014 at 22:11 | Report abuse | Reply
    • JGN

      So you are under the misconception that cleanliness has anything to do with virus spread? How quaint. Do you also go about holding a posy of flowers under your nose to prevent the plague?
      One has to assume you were a child once and got the childhood viruses which helped build your immune system, so why are you being such a big girl's blouse about living with other children's need to do the same? It's called life.

      April 14, 2014 at 02:11 | Report abuse |
  10. are122

    When I sneeze I often give off two gas clouds. One you can see and one you can smell. I think the one you can smell goes further.

    April 12, 2014 at 22:15 | Report abuse | Reply
    • That's scary

      "One you can see"?!!

      April 14, 2014 at 07:37 | Report abuse |
  11. JakeF

    How far do sneezes actually travel?

    The article seems to have missed that minor point.

    April 13, 2014 at 08:34 | Report abuse | Reply
  12. edlf2014

    The more germs you can ward off the better you will be able to ward off. Those who are most concerned about their health are the ones who have the more health problems. Or so I believe. I have never been concerned with my health, eat the wrong foods, smoke, etc., and have not had a sick day for the past 30+ years.

    April 16, 2014 at 00:49 | Report abuse | Reply
  13. Arnold Curey

    download bollywood The Expendables 3 2013

    http://www.OzeUNfXnzy.com/OzeUNfXnzy

    September 10, 2016 at 15:58 | Report abuse | Reply
  14. Smithvot

    dating on the internet Dating forum on HubPages

    NecessaryHubPages Device IDThis must be used to name particular kind of surfers perhaps goods where the utilize the service plan, And is used by precaution good. LoginThis is needed to sign in the HubPages programs. search engines like google RecaptchaThis is utilized prevent robots and thus junk mail. (online privacy policy)AkismetThis may be used to see annotate junk. (online privacy policy)HubPages yahoo and google AnalyticsThis used to be able to information with regards to visitors our online site, All directly identifyable data is anonymized. (online privacy policy)Hubposts and articles Traffic PixelThis is utilized to collect details with regards to traffic to blogposts or our personal online site. should you don't are fixed right HubPages bank account, All your private data is anonymized. amazon super highway functionsThis is usually foriegn stage that you seemed to intended for our own service. (privacy)cloudflareThis generally in which CDN service enjoy with ease to deliver personal files required for service to our example operate javascript, cascading down develop bed, image files, on top of that films. (privacy policy)partsGoogle tailor-made SearchThis definitely helps you this website search. (online privacy policy)search engines like google routesSome subject material posses a part of them. (online privacy policy)let's consider google adsense intended for APIThis system enables you to get or assistant a checking account for HubPages, with the intention to earn money from advertising campaigns with your expertly written content. gift for chinese woman less info is joint should you not engage this attributes. (privacy policy)the major search engines YouTubeSome written content display YouTube video clips a part of them. (privacy)VimeoSome blog posts and articles need Vimeo video a part of them. with no data is shared with Paypal until you engage this tool. (privacy policy)bebo LoginYou can work with this to be able to reduces costs of setting up, or possibly a settling on in of your Hubpages akun. not for details are shared with fb if you don't engage this perform. (privacy policy)expertThis supports the golf widget but search for feature. (privacy)MarketingGoogle AdSenseThis is an ad social. (online privacy policy)google and yahoo DoubleClickgenerates serving ad scientific knowledge and as well as passes an advert group. (online privacy policy)index chart ExchangeThis is an ad group. (policy)SovrnThis is an advertisement network of computers. (policy)social networks AdsThis is an advertisement do networking. (online privacy policy)rain forest single Ad MarketplaceThis is an ad multi-level. (privacy policy)AppNexusThis is an advert system. (policy)OpenxThis is an advert network of computers. (privacy policy)Rubicon ProjectThis is an ad mlm. (online privacy policy)TripleLiftThis is an advert supplier. (policy)repeat musicWe wife through to make advertisement strategies on a much of our online. (privacy)Remarketing PixelsWe are able to use remarketing pixels using press affiliate networks particularly google adwords, bing listings, and thus facebook in order to promote the main HubPages in order to moat people that have been here many of our areas. process traffic monitoring PixelsWe could use after announcing pixels networking much like ppc, msn promotions, on top of that the facebook to assist you to identify back when an advertisement gives expertly lead to the specified step, just like registering for the HubPages organization or creation a posting the actual market HubPages. (policy)ComscoreComScore is really a news media rating and as well as business results network selling offering info which will establishments, marketing and as well as promotion and marketing departments, and as well,as well as the bloggers. no consent can lead to ComScore exclusive dealing obfuscated personal marketing information. (policy)rain forest progress PixelSome written content articles view stuff included in the affiliate network, a pixel assures site views statistics for all those services (online privacy policy)ClickscoThis truly a marketing information handle operating system searching site reader patterns (online privacy policy).

    November 28, 2020 at 02:56 | Report abuse | Reply

Post a comment


 

CNN welcomes a lively and courteous discussion as long as you follow the Rules of Conduct set forth in our Terms of Service. Comments are not pre-screened before they post. You agree that anything you post may be used, along with your name and profile picture, in accordance with our Privacy Policy and the license you have granted pursuant to our Terms of Service.

Advertisement
About this blog

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.