Navigation Links
In Vitro Fertilization Success Rate Higher in Spring, Study Suggests
Date:9/14/2010

By Serena Gordon
HealthDay Reporter

TUESDAY, Sept. 14 (HealthDay News) -- New research suggests that success rates are higher when in vitro fertilization is done during the springtime.

A Brazilian study found that fertilization rates were highest in the spring -- 73.5 percent vs. 67.9 percent for winter. Spring fertilization rates also were higher than the summer and fall rates.

"Epidemiolgists have demonstrated a seasonal distribution in human natural conception and birth rates," said study author Daniela Braga, head researcher at the Assisted Fertilization Center in Sao Paulo. "We observed a 1.45-fold increase in the fertilization rate during the spring."

Braga said that the difference in fertilization rates may have something to do with the effect that changing light patterns can have on neurons in the brain that produce hormones that stimulate the release of eggs from the ovaries.

The study followed 1,932 women who were undergoing egg retrieval for in vitro fertilization. Four hundred and thirty-five women had egg retrieval in the winter, 444 had the procedure in the spring, 469 had egg retrieval done in the summer and 584 had it done in the fall.

Blood samples were also taken to compare estradiol levels -- a hormone that helps signal the ovaries to release eggs.

The number of eggs retrieved, high-quality embryos created, embryos implanted and pregnancy rates didn't differ significantly between the groups, according to the study.

What did change with the seasons were the fertilization rates, the study found. In the winter, 67.9 percent of eggs were fertilized. In the spring, that number was 73.5 percent; in the summer it was 68.7 percent and in the fall it was 69 percent.

Blood levels of estradiol didn't vary with the seasons. However, the concentrated estradiol levels per number of eggs retrieved was much higher in the spring than in other seasons, according to the study.'/>"/>

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Page: 1 2 3

Related medicine news :

1. Exposure to nitrogen dioxide lowers in vitro fertilization success
2. A novel in vitro model for light-induced wound healing
3. First clinical trials successfully completed on potent new hepatitis C drug
4. Stopping smoking cessation treatments too soon may reduce odds of success for 45 percent of smokers
5. Personalized medicine: Molecular imaging predicts treatment success in many cancers
6. Success stops drug trial
7. Fat distribution plays a role in weight loss success in patients at risk of diabetes
8. University of Colorado Denver Business School study shows failure better teacher than success
9. Putting focus on immediate health effects may improve weight loss success
10. Study finds proximity could be key to success of healing prayer
11. UM School of Medicine finds mentorship program successfully fights childhood obesity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
 In Vitro Fertilization Success Rate Higher in Spring, Study Suggests
(Date:11/28/2014)... Now that the holiday season is ... the nation's leading cash-for-junk-cars companies, is improving their cash ... more competitive and help bring a little bit more ... of year. , Along with purchasing expensive gifts for ... also deal with large travel expenses during the holiday ...
(Date:11/28/2014)... On Monday, November 24, 2014, just ... Feeding America Eastern Wisconsin with a check for over ... a portion of proceeds to Feeding America Eastern Wisconsin. ... 7 Ways to Save” with Turbana bananas and Fyffes ... for $4 and Turbana bananas were 29 cents per ...
(Date:11/28/2014)... FL (PRWEB) November 28, 2014 Miami's ... responsive website. Practice founder Dr. Jeffrey Epstein ... Created using a groundbreaking WordPress platform, the site ... , Currently, up to 75% of all ... than ever, these people are logging on with smartphones, ...
(Date:11/28/2014)... Evergreen, Colorado (PRWEB) November 28, 2014 Written ... Jackson , Brook Forest Voices releases the “The Happiest ... audiobook , a compelling account of how and why Project ... of Idaho by his mother Josie and the Reverend Richard ... millionaire by the age of 30, but realized that he ...
(Date:11/28/2014)... Not only is the Éminence Organic Skin Care ... and other cancer-causing agents, but they are also proud ... programs that help in the fight against breast cancer. ... incredible, record-breaking contribution of $30,000 through participation in the ... Red Rose Whip Moisturizer and the company’s corporate donation. ...
Breaking Medicine News(10 mins):Health News:Rusty's Auto Salvage Increasing Their Cash Offers to Help Drivers Save Throughout the Busy Holiday Season 2Health News:Turbana Partners With Sendik's Food Market to Donate $11,500 to Local Hunger-Relief Non-Profit 2Health News:Turbana Partners With Sendik's Food Market to Donate $11,500 to Local Hunger-Relief Non-Profit 3Health News:Top Rhinoplasty Surgeon Launches Innovative Website 2Health News:Thanksgiving Weekend Audiobook Treat! “The Happiest Man In the World: Life Lessons From a Cultural Economist” by Dr. James W. Jackson 2Health News:Éminence Organic Skin Care Donates Record-breaking $30,000 to Breast Cancer Research 2Health News:Éminence Organic Skin Care Donates Record-breaking $30,000 to Breast Cancer Research 3
... a chlorine gas disaster in a South Carolina town gives ... how to prepare emergency response systems for an accidental or ... now available in the January 2009 issue of the ... one of the largest community exposures to chlorine gas since ...
... of chronic abdominal pain of luminal etiology is a ... The exact localization of lesion to either small or ... In tropical countries, where most of the population is ... which screens small and large bowel lesions simultaneously at ...
... 29 Stereotaxis, Inc.,(Nasdaq: STXS ) today ... existing institutional investors to raise gross proceeds of $20,million ... two separate,concurrent transactions. A portion of the warrants sold ... these warrants would provide an additional,approximately $10 million in ...
... study finds , , MONDAY, Dec. 29 (HealthDay News) -- ... have sex as teens who don,t make such promises -- ... disease or pregnancy, a new study finds. , "Previous studies ... than non-pledgers," said study author Janet E. Rosenbaum, a post ...
... 5k Walks Drive Home Importance of Awareness and Education ... an effort to raise money for The Kidney TRUST(TM) ... of chronic kidney disease (CKD) -- DaVita Inc., the ... that the 3rd annual "Kidney Awareness Time(TM)" Walk-a-thon (The ...
... Free Company Plans New Products and Expanded Services in 2009 ... ... Vista, LLC has reported its seventh consecutive year of revenue growth ... and strong demand for media relations and marketing services provided by ...
Cached Medicine News:Health News:New study examines effects of Graniteville, S.C., chlorine gas disaster 2Health News:New study examines effects of Graniteville, S.C., chlorine gas disaster 3Health News:A new screening test for chronic abdominal pain 2Health News:Stereotaxis to Raise $20 Million in Registered Direct Offering of Common Stock and Warrants 2Health News:Stereotaxis to Raise $20 Million in Registered Direct Offering of Common Stock and Warrants 3Health News:Stereotaxis to Raise $20 Million in Registered Direct Offering of Common Stock and Warrants 4Health News:Many Teens Don't Keep Virginity Pledges 2Health News:Many Teens Don't Keep Virginity Pledges 3Health News:Thousands of DaVita Teammates Raise Over $100,000 for CKD Programs 2Health News:Thousands of DaVita Teammates Raise Over $100,000 for CKD Programs 3Health News:Fisher Vista, LLC Reports Seventh Consecutive Year of Revenue Growth and Profitability 2Health News:Fisher Vista, LLC Reports Seventh Consecutive Year of Revenue Growth and Profitability 3
(Date:11/26/2014)...   Royal Philips (NYSE: ... of its portfolio of diagnostic X-ray solutions ... , ProGrade and PrimaryDiagnost[ii]. With new releases of ... U.S., and availability of all these solutions in ... innovative solutions designed to meet the needs and ...
(Date:11/26/2014)... 2014 Lexicon Pharmaceuticals, Inc. (Nasdaq: ... previously announced concurrent financing transactions resulting in gross ... offering expenses, Lexicon anticipates net proceeds of approximately ... of: , a public offering of ... registration statement that has been declared effective by ...
(Date:11/26/2014)... -- Scott Steiger lives in St. Louis ... engineer for the past 20 years, he,s traveled extensively and prior ... been to six of the seven continents. Travel is a big ... Photo - http://photos.prnewswire.com/prnh/20141126/161077 So when ... good idea of what,s required. His latest creation is ...
Breaking Medicine Technology:Philips expands global reach of diagnostic X-Ray solutions 2Philips expands global reach of diagnostic X-Ray solutions 3Lexicon Announces Completion Of $280 Million In Financing Transactions 2Lexicon Announces Completion Of $280 Million In Financing Transactions 3Steiger Has Created the First Pill Case Specifically Designed For Travel 2
... contact between grant material and fracture ends ... bones., ,Grid-Like Format of Mesh Cathode Provides ... , ,The innovative Mesh Cathode of the ... and a scaffolding effect designed to increase ...
Flowmate makes portable uroflowmetry easy, accurate and dignified. Flowmate has automatic start and stop as well as simple and straightforward reporting from its own printer....
... a single use device that produces rapid, ... spread and vapor sealing of adjacent tissue ... BPH, without deep desiccation. Often referred to ... the Plasma-V gives the urologist the control ...
Sterile Disposable Thermal Cautery Tips for Vasectomy. Individually peel-pouched with dual plastic sheaths to cover non-sterile handle. Box of 10 tips....
Medicine Products: