home
RSS
Modern life rough on men
August 18th, 2011
07:30 AM ET

Modern life rough on men

Didn’t men use to be more masculine? They were more ready  to fight back, right? They walked with more swagger, and just did more things their way.

Researchers can’t measure swagger – but they can measure testosterone, the male sex hormone most responsible for masculine behaviors – and studies show that testosterone levels in men have been on the decline for decades.

Two major studies have confirmed the phenomenon, one in U.S. men and another in Danish men. In the U.S. study, the total testosterone levels measured in men’s blood dropped approximately 22% between 1987 and 2004.

Of course testosterone levels drop as men get older, but what makes the study shocking is that men today actually have less testosterone than men used to have at the same age.

The challenges to men’s health may not be limited to testosterone levels. The amount of sperm in ejaculated semen may be falling too.

A 1992 Danish analysis of sperm quality from other studies concluded that sperm quality has been dropping for decades, and a 1997 reanalysis using different mathematical modeling confirmed the decline, estimating a drop in sperm levels of about 1.5% per year in the United States.

But researchers have been gathering new data since 1996, this time using semen from Danish 18-year olds testing for military service.

That data shows no such decline at all. Oddly, the results have not been published in a peer-reviewed journal, but were instead released early to the Danish government, which then published them online.

If there’s strong evidence that testosterone is dropping, and the jury is still out on the decline of sperm, what other health challenges are men facing?

Male sex organ malformations are certainly among them. Hypospadias for example, a condition in which the man’s urethra opens somewhere before the tip of the penis, nearly doubled in prevalence from 1970 to 1993 according to national Birth Defects Monitoring Program.

Another study found that the percentage of babies in neonatal intensive care units with hypospadias jumped from just .4% in 1987 to 4% in 2000.

Boys also suffer higher rates of once-rare disorders like ADHD and autism. A comprehensive study of South Korean schoolchildren published earlier this year estimates 3.74% of all boys in that country have some form of autism, compared to 1.74% of girls.

To top it all off: there’s evidence that the percentage of babies born male is declining.

In the general population the difference is slight, but statistically relevant. One group of epidemiologists found that in the United States, the percentage of Caucasian babies born male decreased from 51.43% in 1970 to 51.22% in 2002. That’s equivalent to about 21 fewer men per 10,000 births.

In some populations, the drop is far more significant.

A group of Native Americans – the Chippewas of Aamjiwnaang – live on a reserve surrounded by large industrial chemical plants in Ontario, Canada. The percentage of male births there dropped from a normal rate of 55.1% in the years 1989-1993 to just 34.8% in the years 1999-2003.

Why is this happening?

Many researchers cited here mention changes in our environment, like an increase in the number of chemicals we’re exposed to in the womb, and throughout life.

Precisely how it all happens though is somewhat outside our scientific understanding, and of course something like testosterone levels affects each man very differently.

“Two men of the same age may have exactly the same testosterone level but feel very different physically, emotionally, and sexually,” says Ian Kerner, CNN’s sex counselor. “I try to work with men to re-define sex in a way that works with their situation.”

What is clear is that for whatever reason – men are taking some big biological punches from modern life.

Follow CNNHealth on Twitter


soundoff (873 Responses)
  1. rv doctor near me

    Hello there! This post could not be written any better! Looking at this post reminds me of my previous roommate! He continually kept preaching about this. I am going to send this information to him. Pretty sure he will have a great read. Many thanks for sharing!

    http://www.ric.edu/Pages/link_out.aspx?target=https://youtube.com/watch?v=ijZVx5rebRQ

    May 13, 2021 at 17:34 | Report abuse | Reply
  2. california coach towing orange

    I was very happy to find this site. I need to to thank you for your time for this wonderful read!! I definitely enjoyed every little bit of it and I have you book-marked to see new things in your web site.

    https://www.bestprice.gr/url?q=https://ocrv.biz/rv-repair-shop-artesia-california

    May 13, 2021 at 18:07 | Report abuse | Reply
  3. rv supplies orange county

    https://espqa.memorialhermann.org/url?q=http://youtube.com/watch?v=mxg56z0lgWo

    May 13, 2021 at 20:05 | Report abuse | Reply
  4. orange county trailer

    https://autofans.joj.sk/api/rdr.php?key=Husqvarna+Ambassador&rdr=https://ocrv.club/rv-repair-shop-san-fernando-valley-california

    May 13, 2021 at 20:22 | Report abuse | Reply
  5. Van Sliding Door Repair

    https://yamaguchi.keizai.biz/banner.php?type=image_banner&position=right&id=41&uri=https://commercialvanrepairshop.com/sprinter-van-restoration-shop-near-me

    May 13, 2021 at 23:11 | Report abuse | Reply
  6. fiberglass store near me

    http://respekkt.mbnet.fi/ciderbook/go.php?url=http://youtube.com/watch?v=3aodtQJrymQ

    May 13, 2021 at 23:23 | Report abuse | Reply
  7. 2007 Sprinter Rear Heater Repair

    Having read this I believed it was rather enlightening. I appreciate you finding the time and effort to put this content together. I once again find myself personally spending a lot of time both reading and leaving comments. But so what, it was still worthwhile!

    http://ww17.freeshoutbox.net/__media__/js/netsoltrademark.php?d=sprintervanrepairshop.com/sprinter-van-collision-repair-shop-near-me

    May 14, 2021 at 01:12 | Report abuse | Reply
  8. rv parts orange county

    bookmarked!!, I really like your site!

    http://www.proteinaute.com/lib/request/redirect.php?url=https://youtube.com/watch?v=U_6_0eifow0

    May 14, 2021 at 05:19 | Report abuse | Reply
  9. RV Batteries Riverside

    Having read this I believed it was extremely informative. I appreciate you taking the time and effort to put this informative article together. I once again find myself spending a lot of time both reading and commenting. But so what, it was still worthwhile!

    http://nyfasummercamps.com/__media__/js/netsoltrademark.php?d=g.page/OCRVFleetServices

    May 14, 2021 at 05:30 | Report abuse | Reply
  10. rv water leak repair

    https://www.igive.com/isearch/NonStoreExit.cfm?type=1&isid=0df7d37f-4feb-4f0f-b472-1df60f43914d&rurl=https://ocrv.xyz/rv-repair-shop-mission-hills-california

    May 14, 2021 at 08:50 | Report abuse | Reply
  11. News

    Asking questions are truly pleasant thing if youu are
    not undeerstanding anything fully, except this post gives good understanding yet.

    May 14, 2021 at 10:43 | Report abuse | Reply
  12. rv repair near me now

    I have to thank you for the efforts you've put in writing this website. I really hope to see the same high-grade blog posts by you later on as well. In truth, your creative writing abilities has inspired me to get my own, personal blog now 😉

    https://reddit.app.link/?channel=mweb_branch&feature=xpromo&campaign=xpromo&$og_redirect=https://ocrv.info/pop-up-trailer-collision-repair-shop-near-me

    May 14, 2021 at 11:47 | Report abuse | Reply
  13. RV Refrigerator Los Angeles

    Everything is very open with a really clear clarification of the issues. It was definitely informative. Your website is useful. Thanks for sharing!

    http://peepholecam.com/cgi-bin/toplist/out.cgi?id=spynude&url=http://

    May 14, 2021 at 12:56 | Report abuse | Reply
  14. remodeled rvs interior

    I love it whenever people come together and share views. Great website, keep it up!

    https://www.priyo.com/feed/redirection?url=https://ocrvmotorsports.com/rv-repair-shop-west-covina-california

    May 14, 2021 at 13:02 | Report abuse | Reply
  15. RV Tires Orange County

    http://www.marcojanzen.de/ff-loewen/redirect.inc.php?url=http://www.youtube.com/channel/UCGb9aC76nAmfzNsCru2KBHA/videos

    May 14, 2021 at 13:45 | Report abuse | Reply
  16. homes for sale near by

    This blog was... how do you say it? Relevant!! Finally I have found something which helped me. Cheers!

    http://api.buu.ac.th/getip/?url=http://meganleary.com

    May 14, 2021 at 14:37 | Report abuse | Reply
  17. Maserati 8Ctf

    This is a great tip especially to those new to the blogosphere. Brief but very accurate info… Thank you for sharing this one. A must read article!

    https://www.fhwa.dot.gov/reauthorization/reauexit.cfm?link=https://club-maserati.com

    May 14, 2021 at 18:11 | Report abuse | Reply
  18. sofa upholstery repair near me

    https://53938.measurementapi.com/serve?action=click&publisher_id=53938&site_id=92394&sub_campaign=g5e_com&url=http://fleetservicesorangecounty.com/

    May 14, 2021 at 18:21 | Report abuse | Reply
  19. Eye Doctor Ahwatukee

    Your style is unique compared to other people I have read stuff from. I appreciate you for posting when you have the opportunity, Guess I'll just book mark this blog.

    https://www.greenreport.it/ads/www/delivery/ck.php?ct=1&oaparams=2__bannerid=41__zoneid=3__cb=4229ad2336__oadest=https://arizonasvision.com/

    May 14, 2021 at 20:27 | Report abuse | Reply
  20. mattress repair service

    Very good post. I will be experiencing some of these issues as well..

    http://www.gvomail.com/redir.php?k=1560a19819b8f93348a7bc7fc28d0168&url=https://www.ocrvluxurycoaches.com

    May 14, 2021 at 20:49 | Report abuse | Reply
  21. Maserati Feet

    http://www.neoromance.info/link/rank.cgi?mode=link&id=26&url=https://club-maserati.com/

    May 14, 2021 at 21:22 | Report abuse | Reply
  22. Maserati Ghibli 2015

    After I originally left a comment I appear to have clicked on the -Notify me when new comments are added- checkbox and from now on every time a comment is added I recieve four emails with the same comment. There has to be a means you can remove me from that service? Appreciate it!

    http://www.valdaveto.net/redirect.php?link=https://www.club-maserati.com/

    May 14, 2021 at 21:41 | Report abuse | Reply
  23. Lasik Surgery Phoenix

    There is definately a great deal to learn about this topic. I really like all the points you have made.

    http://momoantena.com/redirect?url=arizonasvision.com

    May 15, 2021 at 03:11 | Report abuse | Reply
  24. school bus repair shop

    http://sys.labaq.com/cli/go.php?s=lbac&p=1410jt&t=02&url=https://www.ocrv.xyz/

    May 15, 2021 at 04:29 | Report abuse | Reply
  25. Contact Lenses Near Me

    http://members.adlandpro.com/adlandredir.aspx?returnurl=https://arizonasvision.com

    May 15, 2021 at 06:06 | Report abuse | Reply
  26. Myopia Control

    There is definately a great deal to find out about this issue. I really like all the points you have made.

    https://www.site-navi.net/sponavi/rank.cgi?mode=link&id=890&url=https://www.arizonasvision.com/

    May 15, 2021 at 08:32 | Report abuse | Reply
  27. Corneal Refractive Therapy

    Hi there! This blog post couldn’t be written much better! Looking through this post reminds me of my previous roommate! He continually kept preaching about this. I'll forward this information to him. Pretty sure he will have a very good read. Thanks for sharing!

    http://www.10lowkey.us/UCH/link.php?url=http://www.arizonasvision.com

    May 15, 2021 at 10:39 | Report abuse | Reply
  28. Aaron Scrymgeour

    I constantly emailed this blog post page to all my friends, because if like to read it next my friends will too.

    May 15, 2021 at 13:28 | Report abuse | Reply
  29. rv tire shop near me

    http://umbraco.realeflow.com/108514?url=https://ocrv.online/

    May 15, 2021 at 15:50 | Report abuse | Reply
  30. realtor near my location

    After I originally commented I seem to have clicked the -Notify me when new comments are added- checkbox and now each time a comment is added I recieve four emails with the same comment. There has to be a means you can remove me from that service? Thank you!

    https://www.acuite.fr/journee_evenementielle_redirect?url=http://meganleary.com

    May 15, 2021 at 16:19 | Report abuse | Reply
  31. rv for sale in orange county

    http://www.fotobug.net/home/link.php?url=https://ocrvmotorcoaches.com/

    May 15, 2021 at 17:47 | Report abuse | Reply
  32. Maserati Rim

    I’m impressed, I have to admit. Seldom do I encounter a blog that’s both educative and interesting, and let me tell you, you have hit the nail on the head. The issue is something too few people are speaking intelligently about. Now i'm very happy that I found this in my hunt for something regarding this.

    http://www.sns.51.ca/link.php?url=http://www.club-maserati.com

    May 15, 2021 at 19:22 | Report abuse | Reply
  33. Seo Marketing Companies Near Me

    https://www.virtualpbl.info/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 15, 2021 at 22:17 | Report abuse | Reply
  34. Actor

    After exploring a number of the articles on yopur web site, I honestly apprsciate your way of writing
    a blog. I book-marked it to my bookmark webpage list and will be checkijng back in the near
    future. Please visit my website tooo and let me know your opinion.

    May 15, 2021 at 23:09 | Report abuse | Reply
  35. aika online private server download

    https://www.tinyportal.net/proxy.php?request=http://aikareborn.com/forums/player-help-desk.63

    May 16, 2021 at 00:28 | Report abuse | Reply
  36. Aika Online Review

    https://www.e-search.ohimesamaclub.com/y/rank.cgi?mode=link&id=13&url=https://aikareborn.com/wiki/warlock_unique_weapons

    May 16, 2021 at 01:06 | Report abuse | Reply
  37. Social Media Marketing Company Near Me

    http://m.movia.jpn.com/mpc_customize_seamless.php?url=http://affordableranking.com/&kmws=3n8oc797354bpd0jq96pgjgtv4

    May 16, 2021 at 03:53 | Report abuse | Reply
  38. Local Marketing Masters

    A fascinating discussion is definitely worth comment. There's no doubt that that you should publish more about this subject matter, it might not be a taboo subject but typically people don't talk about such topics. To the next! All the best!!

    https://panerafoundation.us/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 16, 2021 at 06:13 | Report abuse | Reply
  39. Calvin River

    My developer is trying to persuade me to move to .net from PHP. I have always disliked the idea because of the costs. But he's tryiong none the less. I've been using Movable-type on a variety of websites for about a year and am worried about switching to another platform. I have heard great things about blogengine.net. Is there a way I can transfer all my wordpress content into it? Any help would be really appreciated!

    May 16, 2021 at 08:51 | Report abuse | Reply
  40. Aika Download

    http://www.bookmerken.de/?url=https://aikareborn.com/

    May 16, 2021 at 10:16 | Report abuse | Reply
  41. Mercedes-Benz Sprinter Repair Shop Near Me

    https://cutephp.com/forum/redirect/?q=https://fleetrepairshops.com/delivery-truck-repair-shop-near-me/

    May 16, 2021 at 14:08 | Report abuse | Reply
  42. Nercedes Sprinter Repair Near Me

    Having read this I believed it was really informative. I appreciate you finding the time and energy to put this informative article together. I once again find myself personally spending a significant amount of time both reading and posting comments. But so what, it was still worthwhile!

    https://mobilize.org.br/handlers/anuncioshandler.aspx?anuncio=55&canal=2&redirect=https://boxtruckrepairshop.com/rv-upholstery-shop-near-me

    May 16, 2021 at 14:55 | Report abuse | Reply
  43. Maserati Palm Beach

    http://icollege.pro/__media__/js/netsoltrademark.php?d=http://www.maseratis.net/

    May 16, 2021 at 15:01 | Report abuse | Reply
  44. Sprinter Repair Shop

    https://cztt.ru/redir.php?url=https://fleetservicerepairshop.com/semi-truck-windshield-replacement-shop-near-me/

    May 16, 2021 at 15:56 | Report abuse | Reply
  45. Sprinter Van Body Repair

    Hello there! This post couldn’t be written any better! Reading through this article reminds me of my previous roommate! He constantly kept talking about this. I will send this post to him. Pretty sure he will have a good read. Thanks for sharing!

    http://www.doctor-navi.com/cgi/hospital-search-engine2/rank.cgi?mode=link&id=14979&url=http://www.fleetvehiclerepairshop.com/upholstery-shop-near-me/

    May 16, 2021 at 18:18 | Report abuse | Reply
  46. Sprinter Repair Orange County

    This excellent website really has all of the information and facts I needed about this subject and didn’t know who to ask.

    https://legacy.aom.org/verifymember.asp?nextpage=https://fleetservicesocrv.com/chevrolet-high-top-van-repair-shop-near-me/

    May 16, 2021 at 21:27 | Report abuse | Reply
  47. Mercedes Benz Sprinter Service Center Near Me

    I’m impressed, I have to admit. Seldom do I encounter a blog that’s equally educative and entertaining, and without a doubt, you have hit the nail on the head. The problem is something which too few people are speaking intelligently about. Now i'm very happy that I found this in my hunt for something relating to this.

    https://khazin.ru/redirect?url=https://fleetservicesocrv.com/rv-windshield-replacement-shop-near-me

    May 16, 2021 at 23:06 | Report abuse | Reply
  48. Maserati Near Palo Alto

    http://kuzbassfm.ru/away.php?url=https://club-maserati.com

    May 17, 2021 at 00:06 | Report abuse | Reply
  49. Adrian Rickel

    I take pleasure in, cause I found exactly what I used to be having a look for. You've ended my 4 day lengthy hunt! God Bless you man. Have a nice day. Bye

    May 17, 2021 at 00:25 | Report abuse | Reply
  50. Ada Cross

    I like the helpful information you provide in your articles. I'll bookmark your blog and check again here frequently. I am quite sure I will learn lots of new stuff right here! Good luck for the next!

    May 17, 2021 at 01:12 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Leave a Reply to Van Sliding Door Repair


 

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.