home
RSS
Too much TV could damage sperm production
February 4th, 2013
06:32 PM ET

Too much TV could damage sperm production

Semen quality is a much-discussed subject among scientists these days. Data suggests sperm concentration has been declining in Western countries over the past couple of decades - and reasons for the decline are debatable.

The lead author of a new study on the subject, Audrey Gaskins, has been studying the effects of diet and exercise on semen for several years as a doctoral candidate at the Harvard School of Public Health. Her latest research shows a lack of physical activity – and too much time in front of the television - may impact sperm count and concentration.

Previous studies have shown a link between physical activity and decreased levels of oxidative stress, Gaskins says. “Oxidative stress” is stress placed on the body as it tries to get rid of free radicals or repair the damage caused by them. Exercise may protect certain male cells from oxidative damage, Gaskins says, leading to increased sperm concentration.

Those findings led Gaskins to complete an observational study on young men’s exercise and TV habits as they relate to semen quality. The results were published online Monday in the British Journal of Sports Medicine.

The study

Gaskins and her colleagues asked 189 healthy men between the ages of 18 and 22 how often they exercised each week and how intensely they worked out. The study participants also recorded their TV watching habits.

Then at the clinic, semen samples were collected from each man. The semen was analyzed for sperm size and shape, motility, concentration and total sperm count.

The researchers also conducted a physical examination and looked at the men’s diet, body weight, reproductive history, stress levels and smoking habits to rule out other potential causes of their findings.

The results

The men who did moderate to vigorous exercise 15 hours or more per week had a significantly higher sperm concentration than those who worked out less than five hours a week. And the men who watched more than 20 hours of TV a week had almost half the sperm concentration as the men who watched zero hours a week.

Gaskins says the researchers found these associations between TV, exercise and sperm concentration regardless of the men’s diet, body weight or smoking habits.

Sperm motility and size/shape did not appear to be affected by exercise or time spent in front of the TV.

The caveats

The data used in this study came from a relatively small group of men, meaning it may not translate well to the general population as a whole. And only one semen sample was collected from each man; that sample could have been different from the participant’s “normal” levels.

The data was also self-reported – i.e., the study participants could have elaborated or underestimated the amount of time they spent doing a particular activity.

Observational studies like this (that don’t include a separate control group) make it impossible to prove a cause-and-effect relationship, Gaskins says. While there appears to be a link between physical activity and sperm concentration, the two could really be unrelated.

It’s also “not possible to conclude from these findings whether the observed differences in sperm counts translate into clinically relevant difference in fertility,” the study authors write.

The takeaway

This study doesn’t conclusively prove physical activity boosts your fertility, or that watching too much TV damages your sperm. But there is plenty of research out there on the other benefits of exercise.

Do yourself – and potentially your little swimmers – a favor by staying active. If that means giving up some TV time, so be it.


soundoff (631 Responses)
  1. Sprinter Black Death Repair

    Your style is really unique in comparison to other folks I've read stuff from. Thanks for posting when you've got the opportunity, Guess I will just book mark this page.

    https://golden-resort.ru/out.php?out=https://www.fleetservicerepairshop.com

    June 29, 2021 at 20:12 | Report abuse | Reply
  2. Sprinter Van Upgrades Shop Near Me

    http://ww17.alezzo.com/__media__/js/netsoltrademark.php?d=fleetservicesocrv.com/

    June 29, 2021 at 20:43 | Report abuse | Reply
  3. best THC gummies

    Awesome article.Really thank you! Want more.

    https://www.peninsuladailynews.com/marketplace/top-3-best-delta-8-thc-gummies-weed-edibles-for-sale/

    June 29, 2021 at 21:34 | Report abuse | Reply
  4. RV Repair Near Me Now

    The very next time I read a blog, Hopefully it does not disappoint me just as much as this one. I mean, I know it was my choice to read, however I really believed you would probably have something helpful to say. All I hear is a bunch of crying about something that you could fix if you weren't too busy seeking attention.

    http://loggingapi.spingo.com/v1/link?url=https://www.ocrvmotorcoachsales.com&id=2946&className=calendar&checkpoint=referred

    June 30, 2021 at 01:08 | Report abuse | Reply
  5. Dodge Van Frame Repair Kit

    Nice post. I learn something new and challenging on sites I stumbleupon every day. It's always exciting to read through content from other writers and use a little something from other websites.

    http://analyticalessay.com/redirect.cgi?query=https://www.fleetservicesorangecounty.com

    June 30, 2021 at 06:45 | Report abuse | Reply
  6. Nearby RV Repairs

    Spot on with this write-up, I seriously believe that this amazing site needs a great deal more attention. Iíll probably be back again to read more, thanks for the information!

    http://atari.org/links/frameit.cgi?ID=238&url=http://www.ocrvmotorcoaches.com/

    June 30, 2021 at 08:25 | Report abuse | Reply
  7. RV Repair Shops Near My Location

    Way cool! Some extremely valid points! I appreciate you writing this write-up and also the rest of the site is very good.

    http://ads.businessnews.com.tn/dmcads2017/www/delivery/ck.php?ct=1&oaparams=2__bannerid=1839__zoneid=117__cb=df4f4d726f__oadest=https://www.ocrv.life/

    June 30, 2021 at 09:57 | Report abuse | Reply
  8. Nearby RV Repairs

    https://beesign.com/webdesign/extern.php?homepage=ocrvcenter.info/

    June 30, 2021 at 12:07 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13

Leave a Reply to Sprinter Van Upgrades Shop Near Me


 

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.