Mother's smoking, early birth may raise ADHD risk in children - 21 News Now, More Local News for Youngstown, Ohio -

Mother's smoking, early birth may raise ADHD risk in children

Updated: Dec 3, 2013 02:51 PM
© iStockphoto / Thinkstock © iStockphoto / Thinkstock
  • More NewsMore>>

  • Fracking foes cringe as unions back drilling boom

    Fracking foes cringe as unions back drilling boom

    Sunday, April 20 2014 9:25 PM EDT2014-04-21 01:25:56 GMT
    PITTSBURGH (AP) - After early complaints that out-of-state firms got the most jobs, some local construction workers and union members in Pennsylvania, Ohio and West Virginia say they're now benefiting in a big way from the Marcellus and Utica Shale fracking boom.That vocal support from blue-collar workers complicates efforts by environmentalists to limit drilling.The Laborers' International Union, or LIUNA, says that construction work its members do on large pipeline jobs in Pennsylvania and ...More >>
    PITTSBURGH (AP) - After early complaints that out-of-state firms got the most jobs, some local construction workers and union members in Pennsylvania, Ohio and West Virginia say they're now benefiting in a big way from the Marcellus and Utica Shale fracking boom.That vocal support from blue-collar workers complicates efforts by environmentalists to limit drilling.The Laborers' International Union, or LIUNA, says that construction work its members do on large pipeline jobs in Pennsylvania and ...More >>
  • Ohio hog farms hit by disease that kills baby pigs

    Ohio hog farms hit by disease that kills baby pigs

    Sunday, April 20 2014 9:22 PM EDT2014-04-21 01:22:01 GMT
    TOLEDO, Ohio (AP) - Hog farms in Ohio are reporting cases of a relatively new disease that kills newborn pigs.The state's agriculture department says it has recorded a couple hundred confirmed cases of the virus across Ohio.The disease first found a year ago causes baby pigs to become dehydrated and die.Severe strains of the virus can wipe out a farm's entire supply of baby pigs.The U.S. Department of Agriculture recently said the die-off has had a hand in shrinking the nation's pig herd by 3...More >>
    TOLEDO, Ohio (AP) - Hog farms in Ohio are reporting cases of a relatively new disease that kills newborn pigs.The state's agriculture department says it has recorded a couple hundred confirmed cases of the virus across Ohio.The disease first found a year ago causes baby pigs to become dehydrated and die.Severe strains of the virus can wipe out a farm's entire supply of baby pigs.The U.S. Department of Agriculture recently said the die-off has had a hand in shrinking the nation's pig herd by 3...More >>
  • Gender gap under Ohio governor nearly $10 an hour

    Gender gap under Ohio governor nearly $10 an hour

    Sunday, April 20 2014 9:13 PM EDT2014-04-21 01:13:55 GMT
    DAYTON, Ohio (AP) - A newspaper investigation has found the average pay gap between men and women in the offices of four of Ohio's five elected statewide officials has grown to almost $10 an hour, as it's shrunk to under a dollar across the rest of state government.The Dayton Daily News reports (http://bit.ly/1jWcGS7 ) women working in Republican Gov. John Kasich's (KAY'-siks) office earn $9.81-an-hour less, on average, than men. That's the highest gender pay gap among statewide officeholders...More >>
    DAYTON, Ohio (AP) - A newspaper investigation has found the average pay gap between men and women in the offices of four of Ohio's five elected statewide officials has grown to almost $10 an hour, as it's shrunk to under a dollar across the rest of state government.The Dayton Daily News reports (http://bit.ly/1jWcGS7 ) women working in Republican Gov. John Kasich's (KAY'-siks) office earn $9.81-an-hour less, on average, than men. That's the highest gender pay gap among statewide officeholders...More >>

By Randy Dotinga
HealthDay Reporter

TUESDAY, Dec. 3, 2013 (HealthDay News) -- A new study from Australia sheds more light on what environmental factors might raise the risk for attention-deficit/hyperactivity disorder (ADHD).

"Compared with mothers whose children did not have ADHD, mothers of children with ADHD were more likely to be younger, single, smoked in pregnancy, had some complications of pregnancy and labor, and were more likely to have given birth slightly earlier," said study co-author Dr. Carol Bower, a senior principal research fellow with the Center for Child Health Research at the University of Western Australia. "It did not make any difference if the child was a girl or a boy."

The researchers did find that girls were less likely to have ADHD if their mothers had received the hormone oxytocin to speed up labor. Previous research had suggested its use during childbirth might actually increase the risk of ADHD.

The causes of ADHD remain unclear, although evidence suggests that genes play a major role, said Dr. Tanya Froehlich, an associate professor at Cincinnati Children's Hospital Medical Center.

"Many prior studies have found an association between ADHD and [tobacco and alcohol exposure in the womb], prematurity and complications of pregnancy and delivery," she said.

One thing is certain: Diagnoses of ADHD have become common in the United States. A survey released in November found that 10 percent of American children have been diagnosed with the condition, although the rapid increase in numbers seems to have leveled off.

ADHD is more prevalent in boys. Its symptoms include distractibility, inattention and a lack of focus.

In the new study, researchers examined the medical records of nearly 13,000 children and young adults who were born in Western Australia and took stimulant medications for ADHD between 2003 and 2007. Stimulant drugs such as Ritalin and Adderall are typically used to treat ADHD.

The researchers compared the subjects to more than 30,000 other children to see if there were any environmental differences.

Although factors such as a mother's younger age and smoking during pregnancy were linked to a higher risk of ADHD in children, "low birth weight, birth at greater than full term and breathing difficulties in the baby were not more common [in the ADHD group]," Bower said.

What's going on?

"Chronic exposure to smoking in pregnancy may create an imbalance in chemicals that result in ADHD," said study lead author Desiree Silva, a professor of pediatric medicine at the University of Western Australia.

But Froehlich said the picture may be even more complicated.

Some researchers have suggested that "people with ADHD are more likely to smoke, and then may pass on their ADHD-related genes to their children," Froehlich said.

Urinary tract infections also are thought to contribute to inflammation that affects the development of the brain in the fetus, she said. Stress during pregnancy -- perhaps from being single or a young mother -- could do the same thing.

"[However], since ADHD is associated with higher rates of teen pregnancy, it is also possible that the younger and single mothers themselves have higher rates of ADHD, and they are passing on their ADHD-related genes to their children," Froehlich said.

The Australian researchers called for more study on the subject.

The study appears online Dec. 2 and in the January print issue of the journal Pediatrics.

More information:

For more about ADHD, visit the U.S. National Library of Medicine.

Copyright © 2013 HealthDay. All rights reserved.

*DISCLAIMER*: The information contained in or provided through this site section is intended for general consumer understanding and education only and is not intended to be and is not a substitute for professional advice. Use of this site section and any information contained on or provided through this site section is at your own risk and any information contained on or provided through this site section is provided on an "as is" basis without any representations or warranties.
  • Around the WebMore>>

  • GM boosting China production capacity to 5 million

    GM boosting China production capacity to 5 million

    Sunday, April 20 2014 10:52 AM EDT2014-04-20 14:52:53 GMT
    Sales of GM-brand vehicles in China should reach 5 million next year, and Cadillac sales will double to 100,000, the president of General Motors said Sunday.More >>
    The president of General Motors said Sunday that the company and local partners are boosting production capacity for GM-brand vehicles in China to 5 million.More >>
  • Ohio couple married 70 years die 15 hours apart

    Ohio couple married 70 years die 15 hours apart

    Sunday, April 20 2014 9:03 AM EDT2014-04-20 13:03:14 GMT
    NASHPORT, Ohio (AP) - An Ohio couple who held hands at breakfast every morning even after 70 years of marriage have died 15 hours apart.Helen Felumlee (FEHL'-uhm-lee) of Nashport in central Ohio died April 12. She was 92. Her husband, 91-year-old Kenneth Felumlee, died April 13.The couple's children say the two met as teenagers and had been inseparable since then.The Zanesville Times Recorder reports (http://ohne.ws/1in7erG) that the pair married Feb. 20, 1944, and raised eight children.Their...More >>
    NASHPORT, Ohio (AP) - An Ohio couple who held hands at breakfast every morning even after 70 years of marriage have died 15 hours apart.Helen Felumlee (FEHL'-uhm-lee) of Nashport in central Ohio died April 12. She was 92. Her husband, 91-year-old Kenneth Felumlee, died April 13.The couple's children say the two met as teenagers and had been inseparable since then.The Zanesville Times Recorder reports (http://ohne.ws/1in7erG) that the pair married Feb. 20, 1944, and raised eight children.Their...More >>
  • Easter Bunny train sparks New Jersey brush fires

    Easter Bunny train sparks New Jersey brush fires

    Sunday, April 20 2014 8:31 AM EDT2014-04-20 12:31:46 GMT
    POHATCONG TOWNSHIP, N.J. (AP) - A train carrying the Easter Bunny in northwestern New Jersey has ignited several small brush fires.The Express-Times newspaper in Easton, Pennsylvania, reports the fires occurred Saturday in Pohatcong Township and Phillipsburg. No major property damage is reported. A firefighter from the New Jersey state forest fire service fell and dislocated his hip.Huntington Volunteer Fire Company Chief Peter Pursell tells the newspaper the diesel en...More >>
    POHATCONG TOWNSHIP, N.J. (AP) - A train carrying the Easter Bunny in northwestern New Jersey has ignited several small brush fires.The Express-Times newspaper in Easton, Pennsylvania, reports the fires occurred Saturday in Pohatcong Township and Phillipsburg. No major property damage is reported. A firefighter from the New Jersey state forest fire service fell and dislocated his hip.Huntington Volunteer Fire Company Chief Peter Pursell tells the newspaper the diesel en...More >>
Powered by WorldNow
All content © Copyright 2000 - 2014 Worldnow and WFMJ. All Rights Reserved. For more information on this site, please read our Privacy Policy and Terms