Navigation Links
When It Comes to Pregnancy, Timing Is Everything
Date:4/3/2008

Too little -- or too much -- time between births can be risky, research suggests

THURSDAY, April 3 (HeathDay News) -- First, there's the initial baby question: When is the right time to have your first child?

Turns out, that's just the beginning. Equally important is figuring out when to have the next baby -- if you decide to have more than one.

The proper timing of pregnancies, experts say, can decrease your risk of having a baby born premature and with a host of health problems.

Intervals that are too brief -- as well as those that are too long -- aren't desirable, research suggests.

In one of the latest studies, researchers from Washington University in St. Louis evaluated more than 156,000 women from Missouri who had two births from 1989 to 1997. The researchers looked at the intervals between pregnancies and the outcomes for those pregnancies. The study, led by Dr. Emily DeFranco, a clinical fellow in maternal-fetal medicine and a staff member at Washington University's Center for Preterm Birth Research, was published recently in the American Journal of Obstetrics and Gynecology.

Among the findings, according to DeFranco:

  • Intervals of less than six months from delivery to conception of the next baby increased the risk of preterm birth (less than 35 weeks) by 41 percent.
  • Intervals of six to 12 months increased preterm birth risk by 14 percent.
  • Intervals of 12 to 18 months carried no significant increased risk of preterm birth.

"Wait a minimum of 12 months before becoming pregnant again," DeFranco advised. That's to say, let 12 months or more go by after delivery before you start trying again to become pregnant. That advice is especially crucial for women who have already had a preterm birth, which raises the preterm risk in subsequent pregnancies, she said.

In another report, published in April 2006 in the Journal of the American Medical Association, researchers from Bogota, Colombia, reviewed the results of 22 published studies, coming to conclusions similar to those of the Missouri researchers. But the Colombian researchers also found hazards with intervals that were too lengthy.

The researchers reviewed data on more than 11 million pregnancies spanning a 40-year period. They found that babies born to women who had an interval of less than six months between pregnancy and conception were 40 percent more likely to be born early than those whose mothers waited 18 to 23 months. Those babies were also 61 percent more likely to be underweight at birth and 26 percent more likely to be small for their gestational age, compared to infants born to mothers who waited 18 to 23 months between pregnancies.

But, the Colombian researchers also found that babies born to mothers who waited longer than 59 months between delivery and the next pregnancy had a 20 percent to 43 percent increased risk of health problems, such as small for gestational age.

Short intervals may increase risk to the babies, because the mother hasn't had enough time to recover nutritionally from one pregnancy to the next one, experts say. It's not clear why long intervals might pose problems, but one possibility is that women who delay another pregnancy for an extended period of time may simply be reaching a stage in life where advancing maternal age is itself becoming a risk factor.

Rachel Royce is a senior epidemiologist at RTI International, a scientific research institute in Research Triangle Park, N.C., who wrote an editorial to accompany the Colombian research. She noted that "the data show that intervals in the range of 20 to 40 months [between births] are associated with the best outcomes."

That works out to about 12 months or longer between delivery and conception of the next baby -- exactly what the Missouri researchers concluded.

"Essentially, clinicians should counsel all women to space pregnancies at least 12 months apart, if at all possible," Royce said.

DeFranco agreed.

More information

To learn about how to get healthy before getting pregnant, visit the March of Dimes.



SOURCES: Emily DeFranco, D.O., clinical fellow, maternal-fetal medicine, and staff member, Center for Preterm Birth Research, Washington University, St. Louis; Rachel Royce, Ph.D., M.P.H., senior research epidemiologist, RTI International, Research Triangle Park, N.C.; April 19, 2006, Journal of the American Medical Association; September 2007, American Journal of Obstetrics and Gynecology


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Houston-Based LifeGift Becomes States Only Stand-Alone Organ and Tissue Recovery Agency
2. Leventhal Weight Loss Incorporated Becomes First in the Nation Executive Weight Loss Consulting Service for Attorneys by an Attorney
3. Drug-coated balloon overcomes in-stent restenosis
4. Anticoagulant Drugs Had Similar Outcomes After Angioplasty
5. Comparison of anticoagulants for angioplasty show similar outcomes
6. Spartan Stores Becomes Largest U.S. Supermarket Chain to Receive NSF Shop Fresh(TM) Certification
7. Head and Neck Cancer Outcomes a Mixed Bag
8. MTM Study Reports Improved Quality and Economic Outcomes Using Medication Management Systems Assurance Pharmaceutical Care System(TM)
9. Specialized Care for Ovarian Cancer Improves Outcomes
10. Outcomes Improve for Non-Hodgkin Lymphoma Patients
11. Therap Services Welcomes Anna Keith to the US Customer Support Team
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
When It Comes to Pregnancy, Timing Is Everything
(Date:2/24/2017)... ... February 24, 2017 , ... An in-depth computational analysis of ... of Pittsburgh points to eight genes that may explain why susceptibility to one of ... results of a study published today in the journal npj Schizophrenia. , “There ...
(Date:2/24/2017)... ... ... The Smart Machine Age is here, and it’s disrupting everything. Not only could ... in the United States may be taken over by technology in the next five ... steamrolls over colleagues is drawing to a close. Success will belong to those who ...
(Date:2/24/2017)... ... 24, 2017 , ... With millions of Americans and people ... we all are aware of our options and are empowered with strength and ... launch of its newest edition of "Vision and Hearing" in USA Today, that ...
(Date:2/24/2017)... ... February 24, 2017 , ... The narrative in “ Signal ... Schanssema ’s true account of his paramedic experiences. Schanssema describes the tragedies he saw, ... his attempts to overcome them. , Schanssema, initially unsure of the career path he ...
(Date:2/24/2017)... ... 2017 , ... The California State University Institute for Palliative Care ... interested in palliative care education and research. The Symposium, “Innovate. Investigate. Educate: Advancing ... Diego on Sept. 28 and 29, 2017, on the campus of California State University ...
Breaking Medicine News(10 mins):
(Date:2/24/2017)... Australien, 24. Februar 2017 ITL Limited, ... des Gesundheitsbereiches, ist erfreut, für das zum 31. ... entsprechenden Vorjahreszeitraum exzellente Ergebnisse vorlegen zu können. Eine ... zum Wachstum" finden Sie hier . ... nach Steuern 2,12 Millionen USD (Dez. 2015: 1,04 Millionen USD; +104 %) ...
(Date:2/24/2017)... 2017  Directors from Pharma To Market Pty Ltd and Ador ... resulting in the founding of Pharma To Market Pte Ltd, based ... are pleased to announce their expansion into Asia ... . The company are delighted to appoint Joelle Chia ... Singapore based entity. Joelle brings with her an ...
(Date:2/24/2017)... , Feb. 23, 2017 ... insights on the various drugs being developed ... covers all the drugs that are in ... Clinical). The pipeline focuses on novel pharmacologic ... antibodies, stem cell therapies, recombinant proteins and ...
Breaking Medicine Technology: