Featured Research

from universities, journals, and other organizations

Teenage Pregnancy May Put Girls At Risk For Osteoporosis

Date:
December 22, 2003
Source:
Johns Hopkins University Bloomberg School Of Public Health
Summary:
A recent study by researchers with the Center for Human Nutrition at the Johns Hopkins Bloomberg School of Public Health was the first to examine the impact of early childbearing on calcium absorption in teens.

More than one million teenage girls become pregnant each year in the United States, and one-half million of these pregnancies result in live births. In addition to the socio-economic challenges that often accompany early parenthood, pregnant teens face dramatic nutritional demands.

A recent study by researchers with the Center for Human Nutrition at the Johns Hopkins Bloomberg School of Public Health was the first to examine the impact of early childbearing on calcium absorption in teens. The study, conducted with a group of teenagers ages 13 to 18 in Baltimore, Md., showed that one-third of these young mothers had a bone mass that meets the definitions of osteoporosis or osteopenia (the precursor condition to osteoporosis) shortly after pregnancy. The study results appear in the December 2003, issue of the American Journal of Clinical Nutrition.

"Adolescents have a narrow window of opportunity to build bone mass and the added demands of pregnancy mean that a mother and her fetus have to compete for calcium," explained Kimberly O'Brien, PhD, principal investigator for the study. "Our study showed that adolescent pregnancy may compromise a girl's ability to reach optimal bone growth and that she may need to consume more calcium than is currently recommended to offset bone loss," added Dr. O'Brien, who is an associate professor with the School's Center for Human Nutrition and Department of International Health.

Dr. O'Brien, who specializes in the study of mineral metabolism in populations with increased nutritional needs, used stable isotope technology to compare rates of calcium absorption during the girls' third trimester of pregnancy and the early post-partum period. Calcium absorption more than doubled in the third trimester, which is comparable to the existing data for pregnant adults. Unlike adult women, however, girls must accrue forty percent of their total bone mass during adolescence.

Girls who consumed more calcium during pregnancy showed less bone loss when tested post-partum than those with poor or average calcium intakes. A related study by this research group also found that a low calcium intake limits fetal bone growth in pregnant teens. Investigators say that more studies are needed to determine the long-term impact of early pregnancy and breastfeeding on a girl's ability to reach peak bone mass. "By characterizing the rates of calcium absorption and bone turnover in adolescent pregnancy, this study was a critical first step towards new recommendations to insure that girls get adequate calcium to prevent or minimize losses and avert any detrimental, long-term effects on bone growth," said Dr. O'Brien.

###

"Calcium absorption is significantly higher in adolescents during pregnancy than in the early postpartum period" was written by Kimberly O'Brien, Maureen Schulman Nathanson, Jeri Mancini and Frank R. Witter.

Funding for this research study was provided by National Institutes of Health.


Story Source:

The above story is based on materials provided by Johns Hopkins University Bloomberg School Of Public Health. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins University Bloomberg School Of Public Health. "Teenage Pregnancy May Put Girls At Risk For Osteoporosis." ScienceDaily. ScienceDaily, 22 December 2003. <www.sciencedaily.com/releases/2003/12/031219072924.htm>.
Johns Hopkins University Bloomberg School Of Public Health. (2003, December 22). Teenage Pregnancy May Put Girls At Risk For Osteoporosis. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2003/12/031219072924.htm
Johns Hopkins University Bloomberg School Of Public Health. "Teenage Pregnancy May Put Girls At Risk For Osteoporosis." ScienceDaily. www.sciencedaily.com/releases/2003/12/031219072924.htm (accessed July 24, 2014).

Share This




More Health & Medicine News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Painkiller Designed To Discourage Abuse: Will It Work?

New Painkiller Designed To Discourage Abuse: Will It Work?

Newsy (July 24, 2014) The FDA approved Targiniq ER on Wednesday, a painkiller designed to keep users from abusing it. Like any new medication, however, it has doubters. Video provided by Newsy
Powered by NewsLook.com
Doctor At Forefront Of Fighting Ebola Outbreak Gets Ebola

Doctor At Forefront Of Fighting Ebola Outbreak Gets Ebola

Newsy (July 24, 2014) Sheik Umar Khan has treated many of the people infected in the Ebola outbreak, and now he's become one of them. Video provided by Newsy
Powered by NewsLook.com
Condemned Man's US Execution Takes Nearly Two Hours

Condemned Man's US Execution Takes Nearly Two Hours

AFP (July 24, 2014) America's death penalty debate raged Thursday after it took nearly two hours for Arizona to execute a prisoner who lost a Supreme Court battle challenging the experimental lethal drug cocktail. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com
Can Watching TV Make You Feel Like A Failure?

Can Watching TV Make You Feel Like A Failure?

Newsy (July 24, 2014) A study by German researchers claims watching TV while you're stressed out can make you feel guilty and like a failure. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins