June 13th, 2014
12:01 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.

Keep your phone out of your pocket – your sperm will thank you
Journal: Environmental International

Since guys don’t usually carry handbags, they tend to keep mobile phones in their pants pockets. A recent study from the University of Exeter suggests this may not be a great idea.

That cell phone could actually have a negative effect on your sperm quality.

The review looked at findings from 10 studies, that included almost 1,500 samples of semen. To evaluate the mens’ sperm quality, the scientists measured viability (the ratio of sperm that were alive), motility (the ability of sperm to move) and concentration (the number of sperm per unit of semen).

Compared to a control group, the percentage of sperm showing normal movement dropped by 8% among men who pocketed mobile phones. This group's sperm's ability to survive also decreased in about 9% of the samples.

The scientists write that the individual risk for sperm damage depends on how long a man keeps his phone in his pants and how much electromagnetic radiation the phone emits.

Read more from TIME

Eating too many hamburgers may increase your breast cancer risk
British Medical Journal

Past research has shown that eating a lot of red meat increases the risk of bowel cancer. Now Harvard researchers say eating red meat in early adulthood also increases a woman's risk of breast cancer.

The scientists analyzed data from 88,803 premenopausal women. During 20 years of follow-up, the team looked at the diets of those who developed breast cancer.

The result: higher consumption of red meat was associated with a 22% increased risk of breast cancer overall. Women who ate more poultry, fish, eggs, legumes and nuts had a lower risk for breast cancer.

Read more from BBC

The 'trust and cuddle-hormone' has another important purpose
Journal: Nature Communications

Oxytocin is often referred to as the “trust and cuddle hormone” because of  its role in maternal nurturing and friendship. Researchers at the University of California, Berkeley, now say that oxytocin is also essential for healthy muscle maintenance and repair.

Their recent study showed that injecting oxytocin under the skin helped animals' muscles heal better.

Oxytocin is the first “anti-aging” molecule approved by the Food and Drug Administration for clinical use. That’s why the study presents oxytocin as a future treatment target for age-related muscle wasting.

Read more from UC Berkeley 

Bad-breath bacteria does more than turn off your date
Journal: Cell Host & Microbe 

Scientists from the University of Pennsylvania have found the bacteria that cause gum disease also create an imbalance in your immune system.

Their recent study revealed that the periodontal bacterium Porphyromonas gingivalis disarms the immune system, leading to periodontitis, with inflammation and bone loss. The gum germs block the immune cells' killing ability and cause inflammation. The dead cells become nutrients that the bacteria feed off of.

“The result is a vicious cycle that exacerbates periodontitis," the researchers write. The team’s discoveries open up new targets for periodontitis treatment.

Read more from University of Pennsylvania 

Heart disease can hurt your mental health
Journal: JAMA 

A healthy mind needs a healthy body.

According to a new study, keeping the heart healthy is also a great way to keep your brain fit. The research examined 17,761 individuals with normal mental function and then re-evaluated them after four years.

The scientists found that the risk for cognitive impairment is greater for people with poor cardiovascular health. A deficit in learning, memory and verbal skills developed in 4.6% of people with the worst heart health and in only 2.6% of those with the most healthy hearts.

The study doesn’t explain the mechanisms that may have led to the findings. However, the study’s author, Evan L. Thacker, said “undetected subclinical strokes could not be ruled out.”

To learn more visit Health.com 

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Filed under: Aging • Brain • Cell Phones • Conditions • Dental health • Diet and Fitness • Fertility • Heart • Living Well • Men's Health • Mental Health

soundoff (617 Responses)
  1. Mark

    Well i always have my phone on my belt clip

    June 14, 2014 at 20:16 | Report abuse | Reply
    • Nonovyerbeezwax

      And? So what?

      June 14, 2014 at 22:07 | Report abuse |
    • tj

      SO, a phone next to your brain when its transmitting is OK? We will have a generation of brain abnormalities coming up just watch, and we will expect medicine to fix them. Kinda like microwaves in the kitchen at breast height.

      June 14, 2014 at 22:17 | Report abuse |
    • Right_Coast

      If you're keeping your phone on a belt clip, odds are there are no near term prospects for your sperm anyway.

      June 14, 2014 at 22:57 | Report abuse |
    • Paul

      So whats the big deal I hadn't had sex or made any sperm deposits in 46 years.

      June 14, 2014 at 23:12 | Report abuse |
    • Dan

      Right coast – You win the internet today!

      June 15, 2014 at 01:27 | Report abuse |
    • Joysie

      Your belt clip. Now what area is that next to?? I will wait while you figure that one out......

      June 15, 2014 at 01:49 | Report abuse |
    • sean daniels

      belt clip or pocket would hardly seem to make much difference .... perhaps then this cell phone era was nothing more than a population control device ....

      June 15, 2014 at 08:27 | Report abuse |
    • elway740

      Nerd Alert!

      Nerds wear a phone on their hip. Almost as nerdy as a fanny pack. Back pocket or front nerd boy. Who cares about your sperm....less is better unless you're trying to have children. I'm going to invent a jock strap mobile phone carrier that works as a contraceptive.

      June 15, 2014 at 12:24 | Report abuse |
    • togakangaroo

      The study made no claims on distance between phone and sperm. They actually specifically said that heat is likely not a factor and I don't see why the cell signal would be significantly weaker six inches versus a foot or even many feet. The conclusion to keep phones out of your pocket is completely made up.

      June 16, 2014 at 00:21 | Report abuse |
  2. Merle McClung

    I also heard men should stay away from the TV remote or those little swimmers won't have a chance to exhibit their viability, motility or concentration.

    June 14, 2014 at 20:36 | Report abuse | Reply
  3. themountaineernation

    Soooooo, we are saying that if I keep my phone in my pocket, it's like a free vasectomy? Great! I have 2 phones. I'll just keep phones in BOTH my pockets!

    June 14, 2014 at 20:42 | Report abuse | Reply
    • Steve Brickman

      The article says the quality of the sperm will be degraded, not destroyed. This means your kids will turn out like [insert name of most hated politician or pop star]

      June 14, 2014 at 21:30 | Report abuse |
  4. BD

    Think I will go back to the Drudge for real news

    June 14, 2014 at 20:43 | Report abuse | Reply
  5. Freddie the Fez

    you gotta wonder about some researcher who woke up one day and said "let's see what the statistical relationship is between cell phones in your pocket and the quality of sperm." And more so the funder who read that grant proposal and thought it was a fantastic idea! Someone else might have cured cancer but they decided to explore the relationship to sperm quality and cell phones instead.

    June 14, 2014 at 20:57 | Report abuse | Reply
    • Nonovyerbeezwax

      What's the matter? Sour grapes because YOU didn't think of it first?

      June 14, 2014 at 22:08 | Report abuse |
  6. RoseSelavy

    I guess it depends on what you want, kids or only the sex. It gives new meaning to the old advice to "keep it in your pants".

    June 14, 2014 at 20:59 | Report abuse | Reply
  7. Bob L

    Is this a new form of birth control?

    June 14, 2014 at 21:28 | Report abuse | Reply
  8. Tim Arias

    Gays don't have to worry about this.

    June 14, 2014 at 21:30 | Report abuse | Reply
    • timelord7202

      They've plenty of other things to consider already. Then again, HIV doesn't seem to be one of them.

      June 15, 2014 at 19:27 | Report abuse |
  9. retiredcompanyguy

    When we did the testing, Motorola was our biggest customer. It was one of several. Nokia may have been the only cell company that we dd not make antennas for at the time. They later almost destroyed our company when they came out with the first digital phones. All of our customers were using analog.

    June 14, 2014 at 21:36 | Report abuse | Reply
  10. drug store cowboy

    Is that a cell phone in your pocket, or are you just glad to see me?

    June 14, 2014 at 21:43 | Report abuse | Reply
  11. retiredcompanyguy

    It' been a lot of years. Nokia may have ben one of our customers. It may have been Ericsson that came out with digital. Let me just pass on a couple things. I have never owned a cell phone. It is not because of the radiation. When I worked at Centurian in 98, we often talked about how we could find ways to track people and hack their conversations etc...

    June 14, 2014 at 22:03 | Report abuse | Reply
  12. jay

    Damb, Now I have to buy another cell phone to kill both sides. lol

    June 14, 2014 at 22:18 | Report abuse | Reply
  13. VegasSmitty

    Five totally BS articles!

    June 14, 2014 at 22:25 | Report abuse | Reply

    2 seconds in a microwave oven kills all things including smartphones themselves. Are smaller doses of microwaves any less dangerous stretched over time?

    June 14, 2014 at 22:30 | Report abuse | Reply
    • Fact Knower Who Actually Studied Physics

      Yes. Exponentially.

      June 14, 2014 at 22:55 | Report abuse |
  15. Skeptical


    June 14, 2014 at 23:07 | Report abuse | Reply
  16. ricardowilli

    I guess those sperm selfies don't like cell phones?

    June 14, 2014 at 23:20 | Report abuse | Reply
  17. Steve

    Good, now I can put my plutonium in both my pockets since this stupid cellphone will kill me.

    June 14, 2014 at 23:23 | Report abuse | Reply
  18. Dr. Marcus Parmel, MD, DDS, PhD, PE, DO, OD

    Vehicular recalculation typically results in extreme digestive vortex misalignment counter to neoplastic conditional aline abduction in conjunctiva melon permeate localizations.

    June 14, 2014 at 23:58 | Report abuse | Reply
  19. TayFo

    I have three kids . . . I need a cell phone in EVERY pocket.

    June 15, 2014 at 00:00 | Report abuse | Reply
  20. joe

    Forget the knife – it'd take a chainsaw to cut through the stupidity of the comments here. Speaking of which, I take most so-called scientific studies with a huge grain of salt; as so many are proven wrong a little further down the road. lol @ the "experts."

    June 15, 2014 at 01:39 | Report abuse | Reply
  21. jeniws

    Who would have ever thought that cell phones could be used to help prevent conception?

    June 15, 2014 at 01:42 | Report abuse | Reply
  22. tyler0896

    Just buy slightly larger jeans, enough to compensate for the tombstone you're jamming into it. Then it won't constrict as much. It isn't rocket science.

    June 15, 2014 at 03:52 | Report abuse | Reply
  23. Lawl


    June 15, 2014 at 04:16 | Report abuse | Reply
  24. Ageboh joshua

    wow ! thats strange.

    June 15, 2014 at 04:21 | Report abuse | Reply
  25. Ageboh joshua

    no wonder when u do that u feel like something getting bad

    June 15, 2014 at 04:28 | Report abuse | Reply
  26. Ryan in L.A.

    I don't believe the study about cell phones & pockets. Sounds like they had their conclusion before they began the research and set out to prove it. That's reverse scientific method. Obviously if there was a real risk that cell phones could damage sperm quality then this would set off alarm bells about the other dangers of cell phones. In the 1980s some people had the same fears about microwaves. But there's no real evidence to support any of it.

    June 15, 2014 at 05:30 | Report abuse | Reply
  27. BO

    Obviously Hillary has kept her cell phone somewhere near her brain.

    June 15, 2014 at 08:33 | Report abuse | Reply
  28. jeff

    What about on the train when 30 people around you are using cell phones at the same time???

    June 15, 2014 at 10:36 | Report abuse | Reply
  29. Steve

    and it doesn't hurt the other cells in your body?

    June 15, 2014 at 11:45 | Report abuse | Reply
  30. agentxyz

    Does this mean I have to wear a fanny pack?

    June 15, 2014 at 12:30 | Report abuse | Reply
  31. gogojuice

    This is not necessarily a scientific/medical cause and effect.

    I suspect you may find the same correlation between low sperm count and guys who pop the collar on their polo shirts. It's a metro thing.

    June 15, 2014 at 13:34 | Report abuse | Reply
  32. Joker

    So... if I keep a cellphone on my stomach at night, will it kill the fat cells?

    June 15, 2014 at 13:58 | Report abuse | Reply
    • james

      https://www.globallshare.com/en-gb/2477093.html, join here guys , u wil see more friends and likes here to ur valuable comments,dont waste the time on juz facebook.join and post u will see the differrnce.

      June 15, 2014 at 15:29 | Report abuse |
  33. Bennett

    The Amezcua E-Guard is a unique wellness solution that provides protection for your body from the harmful effects of electro-smog exposure from mobile phones, computers, laptops, and televisions. Your E-Guards go wherever you go by discreetly attaching to your electronic devices. Thus the Amezcua E-Guard will not only help those affected by electro-sensitiv ities, but also act as a preventative measure for your future protection. For more detail add me @ http://www.facebook.com/pakaoba

    June 15, 2014 at 15:09 | Report abuse | Reply
  34. @SleemAidy

    small diseas cannot kill an african man. so u want me to buy a bag for my phone .

    June 15, 2014 at 15:24 | Report abuse | Reply
  35. Gidraff

    Hell no. I would wanna have babies.

    June 15, 2014 at 15:35 | Report abuse | Reply
  36. elisha agomla joseph

    Are yuh sure with this ur story??????

    June 15, 2014 at 15:58 | Report abuse | Reply
  37. Stimpy

    Slow sperm...now we know what causes Republicanism.

    June 15, 2014 at 16:02 | Report abuse | Reply
  38. Pragmatic

    Anything at all that reduces pregnancies would be tremendously worthwhile. Please, men, by all means, wear two cell phones. Trust me, nobody cares at all about your little swimmers except that they are better off dead. Too many people in this world today.

    June 15, 2014 at 16:36 | Report abuse | Reply
  39. Paulie 'little bag of" Donuts

    My girlfriend says it still taste the same..

    June 15, 2014 at 16:37 | Report abuse | Reply
  40. Ground Control

    Luck going out the gate. I saw my sperm under a microscope when I was 17yrs. old.
    Some were doing some street racing and some were slackers, carrying lounge chairs and tiny beer bottles.

    June 15, 2014 at 17:00 | Report abuse | Reply
  41. mjcharron

    USA should fund sending cell phones, not guns to other nations.

    June 15, 2014 at 17:10 | Report abuse | Reply
  42. puddintane

    THeres no way the mucho macho male is going to do without his phone anymore. The quick and easy fix is to take some meds and smoke some dope, just to make sure

    June 15, 2014 at 20:11 | Report abuse | Reply
  43. donna

    Right on lol

    June 15, 2014 at 20:59 | Report abuse | Reply
  44. charles brandt

    According to the Surgeon General no matter what you eat, drink, breathe. sleep with or now carry in your pocket, you will catch something.

    June 15, 2014 at 22:15 | Report abuse | Reply
  45. edlf2014

    I learned to ignore these 'studies' that surface almost daily when they came out with the 'study' that found school girl pregnancies resulted from their addiction to motherhood.

    June 15, 2014 at 23:05 | Report abuse | Reply
  46. Franklin

    Thanks for your information as regarding the conditions for maintaining stable health. To thoes that have ears let them hear. Pleas, I suggest that more tips should be giving on a weekly basis to improve lifes and health status in the society at large. Thanks once again.

    June 15, 2014 at 23:54 | Report abuse | Reply
  47. krishnasingh pela

    These statisticians/researchers are like blinds, estimating the shape of the elephant. One says elephant is like a pole, other says,no no, it's like rope...
    These radiations have negative effects on whole human body, in heart, in eyes, in kidney, in brain,..., and similarly in sperms. Why they are interested always in partial study ? Nobody will leave their cell phones even after reading this reoort. So better is to tell the less harmful way of manipulating it from the total risk not only about sperms.

    June 15, 2014 at 23:58 | Report abuse | Reply
  48. Jokesterer

    Is that a phone in your pocket or are you just less interested in impregnating me?

    June 16, 2014 at 01:59 | Report abuse | Reply
  49. Mohamed H

    Most of Somali People carry the cell phone on the shirt left pocket or other pockets in the trouser.. i'm sure that will adversely effect......

    June 16, 2014 at 02:01 | Report abuse | Reply
  50. 2L

    If you've already been keeping the phone in your pants pockets for at least the past year – no more babies for you

    June 16, 2014 at 08:48 | Report abuse | Reply
    • Bob

      I consider that a benefit...

      June 16, 2014 at 15:00 | Report abuse |
    • Skeeters

      So I should ink about getting a second phone for my other pants pocket?

      June 16, 2014 at 15:06 | Report abuse |
    • Palzon

      Keeping your cell phone in a belt holster will prevent not only pregnancy, but intercourse altogether.

      June 16, 2014 at 15:21 | Report abuse |
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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.

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