home
RSS
BPA may reduce sperm count
October 28th, 2010
03:01 AM ET

BPA may reduce sperm count



Exposure to bisphenol-A (BPA), a controversial chemical found in hard, clear plastics, is thought to increase the risk of birth defects, early puberty, obesity, brain damage, and some forms of cancer.

Add another potential problem to the list: A new study of Chinese factory workers suggests that very high levels of BPA exposure may decrease sperm count and contribute to other sperm-related problems in men.

The findings aren't surprising. BPA—which can be found in some baby bottles and water bottles, as well the linings of food and beverage cans—is known to be a so-called endocrine disruptor that functions "like a weak estrogen" and blocks male sex hormones (including testosterone), says the lead author of the study, De-Kun Li, M.D., a reproductive and perinatal epidemiologist at Kaiser Permanente's division of research, in Oakland, California.

Health.com: 4 things that mess with your hormones
But the study is notable because it's one of the first in humans to link BPA with reproductive problems. Until very recently, most of the evidence implicating BPA in health problems has come from animal or laboratory studies. (BPA has been associated with reduced sperm count in mice and rats, for instance.)

"Human studies have been the missing link,"  Li says.

In the new study, which appears in the journal Fertility and Sterility, Li and his colleagues collected urine and semen samples from 218 factory workers, some of whom worked in facilities that make BPA or epoxy resin and were therefore regularly exposed to very high levels of the chemical.

Compared with men whose urine was BPA-free, those who had detectable levels of BPA were four times more likely to have a below-average sperm count, three times more likely to have fewer "live" sperm than average, and two times more likely to have below-average sperm quality (motility).

In previous studies conducted in the same population,  Li's team found a similar association between BPA exposure and erectile dysfunction, among other sexual problems.

Health.com: Study links BPA in plastics to erectile dysfunction

“If BPA has such an impact on male sexual function, we have to wonder what else it has an impact on,"  Li says.

The findings don't prove cause and effect, however, and it's not clear how relevant they are for men in the U.S. who aren't exposed to unusually high levels of BPA. Although the researchers did find a connection between BPA levels and sperm problems in men who were exposed to BPA only in the general environment (rather than the workplace), it's possible that the study population differs from the U.S. population in key ways.

Still, the study seems likely to serve as ammunition for advocates and public health officials who favor restrictions on BPA.

Health.com: 12 ways to remove (and avoid) toxics in your home and body

Earlier this month, Canada became the first nation to officially declare BPA a toxic substance. Although the U.S. government hasn't taken similar action, several states have banned the use of the chemical in baby products (or have considered it) and many manufacturers have voluntarily phased out BPA from their products.


soundoff (804 Responses)
  1. Content Marketing Business

    https://jaggt.com/_wpf.modloader.php?wpf_mod=externallink&wpf_link=https://www.affordableranking.com

    May 25, 2021 at 13:11 | Report abuse | Reply
  2. Internet Marketing Agency

    http://www.videolinkondemand.net/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 25, 2021 at 14:53 | Report abuse | Reply
  3. Digital Marketing Near Me

    http://www.growtulsa.com/__media__/js/netsoltrademark.php?d=affordableranking.com

    May 25, 2021 at 15:15 | Report abuse | Reply
  4. Digital Marketing Experts

    http://www.forum-aromashka.ru/go.php?http://www.affordableranking.com

    May 25, 2021 at 15:45 | Report abuse | Reply
  5. Social Media Marketing Market

    https://www.c2financialcorp.com/home/click.php?id=55&link=https://affordableranking.com/

    May 25, 2021 at 16:37 | Report abuse | Reply
  6. Social Media Marketing Company Near Me

    Spot on with this write-up, I actually believe this amazing site needs much more attention. I’ll probably be back again to read more, thanks for the advice!

    https://42line.com/__media__/js/netsoltrademark.php?d=http://www.affordableranking.com

    May 25, 2021 at 17:40 | Report abuse | Reply
  7. generator repair san diego

    https://www.imp.mx/salto.php?va=http://dur-gol.com/indicator4/

    May 26, 2021 at 00:43 | Report abuse | Reply
  8. RV TV Riverside

    Way cool! Some extremely valid points! I appreciate you penning this post and also the rest of the site is also really good.

    http://splash.hume.vic.gov.au/analytics/outbound?url=http://publiensayos.com/tareasmil/

    May 26, 2021 at 01:03 | Report abuse | Reply
  9. RV Frame Riverside

    After exploring a number of the blog posts on your site, I honestly appreciate your way of blogging. I saved it to my bookmark webpage list and will be checking back in the near future. Take a look at my web site too and tell me how you feel.

    http://www.iaccmeetings.com/Redirect.aspx?destination=https://www.treatment.depression.help/texas/san-antonio/center-for-healthcare-services-children-behavioral-health-227-west-drexel-san-antonio-texas/

    May 26, 2021 at 04:45 | Report abuse | Reply
  10. collision experts fargo

    /

    May 26, 2021 at 05:02 | Report abuse | Reply
  11. RV TV Los Angeles

    Greetings! Very helpful advice in this particular post! It's the little changes that produce the largest changes. Many thanks for sharing!

    http://music-style.info/music-style/rank.cgi?mode=link&id=7897&url=https://baumpflege-viersen.de/essential_grid/putter-champ/

    May 26, 2021 at 05:46 | Report abuse | Reply
  12. RV Headlights California

    https://www.fisherphillips.com/redirect.aspx?url=http://mercagarage.com/index.php?fc=module&module=smartblog&id_post=21&controller=details

    May 26, 2021 at 06:01 | Report abuse | Reply
  13. rv air conditioner service near me

    Hello there! I could have sworn I’ve been to this blog before but after looking at a few of the posts I realized it’s new to me. Nonetheless, I’m certainly delighted I discovered it and I’ll be book-marking it and checking back often!

    https://www.loma.org/global_loma/handler/TechDirectory.aspx?companyid=10737446431&action=web&dest=https://ingenieurleistungenreiter.com/index.php?option=com_phocaguestbook&view=phocaguestbook&id=1&Itemid=4&t=4540&limitstart=56320

    May 26, 2021 at 06:24 | Report abuse | Reply
  14. west hills collision center

    I like it whenever people come together and share views. Great site, continue the good work!

    /

    May 26, 2021 at 07:27 | Report abuse | Reply
  15. ambulance repair

    I really like reading a post that will make men and women think. Also, many thanks for allowing for me to comment!

    http://salesnews.qantas.com/public/m/closed?msLRR=https://ocrv.world/rv-repair-shop-noho-arts-district-california

    May 26, 2021 at 14:04 | Report abuse | Reply
  16. RV Bathroom California

    https://www.continental-industry.com/catalogs/iap/Language/Switch?culture=en-GB&returnUrl=https://ocrvcenter.mobi/heavy-truck-collision-repair-shop-near-me

    May 26, 2021 at 14:30 | Report abuse | Reply
  17. painting a horse trailer

    https://www.bashinform.ru/go/?https://ocrv.xyz/motorhome-interior-remodeling-near-me

    May 26, 2021 at 18:02 | Report abuse | Reply
  18. camper repair places near me

    This is a topic which is close to my heart... Thank you! Exactly where are your contact details though?

    http://www.toolsir.com/alexa/siteinfo/ocrv.guru/western-star-truck-collision-repair-paint-shop-near-me-orange-county

    May 26, 2021 at 18:24 | Report abuse | Reply
  19. RV Awning Orange County

    https://www.etypeservices.com/Flash/LinkRedirection.aspx?IssueID=46912&Returnurl=https://ocrv.us/manufacturing-truck-collision-repair-shop-near-me

    May 26, 2021 at 18:24 | Report abuse | Reply
  20. RV Repair Riverside

    http://ecare.unicef.cn/edm/201208enews/url.php?url=https://ocrv.mobi

    May 26, 2021 at 19:23 | Report abuse | Reply
  21. RV Fiberglass Orange County

    Greetings! Very useful advice within this article! It is the little changes which will make the most significant changes. Many thanks for sharing!

    https://espqa.memorialhermann.org/url?q=https://

    May 26, 2021 at 19:38 | Report abuse | Reply
  22. best auto body shop in orange county

    It’s hard to come by experienced people on this subject, but you sound like you know what you’re talking about! Thanks

    https://knitty.com/banner.php?id=587&url=https://ocrv.fun/rv-driver-seat-repair-near-me

    May 26, 2021 at 19:59 | Report abuse | Reply
  23. Repair My 2006 Dodge Sprinter 3500 Rv

    You are so awesome! I do not think I've read through anything like this before. So wonderful to discover another person with a few unique thoughts on this subject matter. Seriously.. thanks for starting this up. This site is something that is needed on the internet, someone with a little originality!

    http://local.katc.com/__media__/js/netsoltrademark.php?d=fleetautorepairshop.com/van-collision-repair-shop-near-me

    May 26, 2021 at 21:07 | Report abuse | Reply
  24. Peter Ellingwood

    https://www.prodesigns.com/redirect?url=http://newmomgiftshop.com

    May 27, 2021 at 10:31 | Report abuse | Reply
  25. camera repair orange county ca

    I really like it whenever people come together and share opinions. Great blog, keep it up!

    https://www.docin.com/jsp_cn/mobile/tip/android_v1.jsp?forward=https://ocrvexperts.com/motorhome-camera-repair-near-me

    May 27, 2021 at 10:33 | Report abuse | Reply
  26. RV Plumbing California

    https://track.aftermarket.pl/track.php?ref=&url=https://ocrv.world/mechanic-truck-collision-repair-paint-shop-near-me-orange-county

    May 27, 2021 at 11:00 | Report abuse | Reply
  27. Google Marketing Agency

    http://track.twshop4coupon.com/track/clicks/3171/c627c2b89e0522dbfe9cbd2e8d2b8914736245cb75e9f0ab416db1046005?t=rankemailads.com

    May 27, 2021 at 13:06 | Report abuse | Reply
  28. rv furniture outlet store near me

    http://old.nepalimmigration.gov.np/site/languages/languageA/3?url=https://ocrv.org/rv-repair-shop-aliso-viejo-california

    May 27, 2021 at 17:28 | Report abuse | Reply
  29. Forklift Repair Shop

    Having read this I believed it was rather enlightening. I appreciate you finding the time and energy to put this informative article together. I once again find myself personally spending way too much time both reading and leaving comments. But so what, it was still worthwhile!

    https://go.isclix.com/deep_link/4694673464837045969?url=https://forkliftswildwestlifttrucks.com/rialto-forklifts

    May 27, 2021 at 19:51 | Report abuse | Reply
  30. RV Renovation Riverside

    http://media.vol.at/weiterleitung/redirect.asp?id=https://ocrv.club/rv-repair-shop-huntington-beach-california

    May 27, 2021 at 22:05 | Report abuse | Reply
  31. RV Leak California

    I truly love your website.. Excellent colors & theme. Did you build this amazing site yourself? Please reply back as I’m looking to create my very own site and would like to find out where you got this from or what the theme is named. Thank you!

    http://apps.vienna.at/feat/microsite/webcams/welcome.asp?url=ocrvcenter.info/nationwide-rv-collision-repair-shop-near-me

    May 28, 2021 at 00:25 | Report abuse | Reply
  32. Google Marketing Company

    Spot on with this write-up, I seriously feel this website needs much more attention. I’ll probably be back again to read more, thanks for the information!

    http://gvomail.com/redir.php?k=1560a19819b8f93348a7bc7fc28d0168&url=http://cdaseo.com/

    May 28, 2021 at 01:03 | Report abuse | Reply
  33. auto paint supply orange county ca

    An intriguing discussion is definitely worth comment. I do think that you need to write more on this subject matter, it might not be a taboo matter but typically people don't speak about these subjects. To the next! Cheers!!

    /

    May 28, 2021 at 02:24 | Report abuse | Reply
  34. RV Solar Panels Systems Riverside

    I like looking through a post that can make men and women think. Also, thanks for allowing for me to comment!

    https://s-school.com/toyo/1/yomi-search/rank.cgi?mode=link&id=62&url=https://kruja.gov.al/rikonstruksioni-i-banesave-rome/

    May 28, 2021 at 02:43 | Report abuse | Reply
  35. Internet Marketing Experts Near Me

    https://www.gladbeck.de/ExternerLink.asp?ziel=www.cdaseo.com

    May 28, 2021 at 05:16 | Report abuse | Reply
  36. fabrication shop near me

    /

    May 28, 2021 at 06:20 | Report abuse | Reply
  37. RV Toilets Riverside

    I need to to thank you for this fantastic read!! I certainly enjoyed every bit of it. I have you book-marked to check out new things you post…

    /

    May 28, 2021 at 06:25 | Report abuse | Reply
  38. rv air conditioner service near me

    You ought to take part in a contest for one of the most useful websites online. I am going to recommend this web site!

    http://ossokolje.edu.ba/gbook/go.php?url=https://villastefany.com/lasfoglietta/Default.asp?inl=0&lin=3415

    May 28, 2021 at 06:41 | Report abuse | Reply
  39. RV Bathroom Orange County

    Pretty! This was a really wonderful article. Thanks for providing this information.

    https://phototo.com.ua/uk/redirect-to-site?client_id=258&url=https://forexbonuspips.com/eurjpy-135-30-135-45-on-the-upside-131-90-132-05-on-the-downside/

    May 28, 2021 at 07:29 | Report abuse | Reply
  40. RV Remodeling Orange County

    After looking into a handful of the blog posts on your website, I truly like your way of blogging. I saved it to my bookmark webpage list and will be checking back in the near future. Please check out my website as well and tell me how you feel.

    http://www.dmca.com/Protection/Status.aspx?ID=edc817fd-d796-4c84-abb8-d1cb5b2e3719&refurl=http://www.morlaesculturas.com/en/module/smartblog/details?id_post=92

    May 28, 2021 at 07:45 | Report abuse | Reply
  41. SEO Marketing Companies Near Me

    There is certainly a great deal to know about this subject. I like all of the points you have made.

    http://aff-tracking.dkt.com.vn/click/33966?url=https://cdaseo.com

    May 28, 2021 at 07:59 | Report abuse | Reply
  42. box truck repair parts

    There is definately a lot to find out about this issue. I really like all the points you've made.

    /

    May 28, 2021 at 08:06 | Report abuse | Reply
  43. Internet Marketing Agencies

    Spot on with this write-up, I actually believe that this website needs a lot more attention. I’ll probably be back again to read more, thanks for the information!

    https://www.track.affclkr.com/track/clicks/3171/c627c2b89e0522dbfe9cbd2e8d2b8914736245cb75e9f0ab416db1046005?t=https://www.postfallslocal.com

    May 28, 2021 at 11:35 | Report abuse | Reply
  44. SEO Marketing Services

    https://mudcat.org/link.cfm?url=https://postfallsmarketing.com

    May 28, 2021 at 15:56 | Report abuse | Reply
  45. Ford Connect Van Floor Repair

    Way cool! Some very valid points! I appreciate you writing this post plus the rest of the website is really good.

    https://www.kms.fr/Eprv/Spe/GoPartenaires/?Url=https://boxtruckrepairshop.com

    May 28, 2021 at 19:39 | Report abuse | Reply
  46. RV Shower Near Me

    https://sc.hkexnews.hk/TuniS/detsky-lekar-brno.eu/detskylekar1

    May 28, 2021 at 21:26 | Report abuse | Reply
  47. Wheelchair Van Repair Near Me

    Greetings! Very helpful advice in this particular article! It is the little changes that produce the greatest changes. Thanks for sharing!

    https://www.etracker.de/lnkcnt.php?et=qPKGYV&url=https://fleetrepairshops.com

    May 28, 2021 at 22:43 | Report abuse | Reply
  48. vcm collision center

    https://cutwin.com/8923REv

    May 29, 2021 at 01:44 | Report abuse | Reply
  49. box truck repair panels

    This is the right blog for everyone who wants to find out about this topic. You realize a whole lot its almost tough to argue with you (not that I actually will need to…HaHa). You definitely put a fresh spin on a subject that's been written about for a long time. Excellent stuff, just wonderful!

    https://go.menjelajahi.com/51spMbrO

    May 29, 2021 at 02:35 | Report abuse | Reply
  50. Semi Truck Mechanic Shop Near Me

    http://admin.kpsearch.com/active/admin/customer/customer_email1_birthday.asp?item=&chname=gnc&strhomeurl=fleetautorepairshop.com/truck-maintenance-shop-near-me &ch=283085

    May 29, 2021 at 06:17 | Report abuse | Reply
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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.