Navigation Links
Smoking While Pregnant Linked to ADHD in Children
Date:7/21/2014

By
HealthDay Reporter

MONDAY, July 21, 2014 (HealthDay News) -- Children born to women who smoked during pregnancy appear to have an increased risk of developing attention-deficit/hyperactivity disorder (ADHD), according to new research.

The new study also hints -- but doesn't prove -- that nicotine-replacement products used during pregnancy, such as patches and gum, could pose the same risk to children. Still, this study suggests that nicotine itself, not just tobacco, may be a hazard during pregnancy.

"We've been lulled into a false sense of security, thinking that if we can just get mothers to stop smoking and onto nicotine replacement, it will protect against any kinds of fetal damage in the developing child. This is a stark injection of reality about how that may not be the case," said Dr. Timothy Wilens, director of the Center for Addiction Medicine and acting chief of child psychiatry at Massachusetts General Hospital in Boston.

Researchers have long tried to pinpoint the hazards of smoking during pregnancy. Among other things, lighting up during pregnancy seems to boost the risk of miscarriage, pregnancy complications, premature deliveries, low birth weight and even obesity in the child's life, said study lead author Dr. Jin Liang Zhu, an assistant professor of epidemiology at Aarhus University in Denmark.

It's not clear how smoking and nicotine use in mothers may affect the brains of developing fetuses. Zhu said nicotine may cause abnormalities in the brain, while the products of cigarette smoke -- such as carbon monoxide -- could affect the brain, too.

It's also possible that other factors are behind the association between smoking in pregnancy and ADHD in children, the study authors suggested. ADHD tends to run in families, and people in families with ADHD are more likely to smoke. So, it's possible that the association seen in this study isn't a direct cause of expectant mothers' smoking, but may be the result of genetics or a shared environment where smoking is present, according to background information in the study.

ADHD is a common behavioral disorder in childhood, according to the U.S. Centers for Disease Control and Prevention. Symptoms include difficulty paying attention, impulsive behavior and problems with sitting still and getting along with others.

Previous research has already linked ADHD in children to mothers who smoked during pregnancy, noted Wilens, who was not involved with the study.

In the new study, researchers examined the medical records of nearly 85,000 children born in Denmark to mothers who were recruited to be part of the study from 1996 to 2002.

Signs of ADHD were present in slightly more than 2,000 children. The numbers were lower among kids of nonsmoking parents (1.8 percent) and in households where mom quit smoking and dad was a nonsmoker (2 percent). The rates of ADHD were highest among kids in families in which both parents smoked -- 4.2 percent.

Among those whose fathers didn't smoke, ADHD rates were highest among those whose pregnant mothers were on nicotine-replacement therapy (3.8 percent) or were smokers (3.4 percent). In households where the father smoked and the mother was on nicotine-replacement therapy, rates of ADHD in children were 2.9 percent, according to the study.

The researchers cautioned that the number of pregnant mothers on nicotine-replacement therapy in the study was small -- just 29 mothers of children with ADHD used these products during pregnancy. As a result, "the findings are more uncertain," Zhu said. In another caveat, the study authors noted that many parents and kids didn't take part in a seven-year follow-up designed to monitor how the children were doing.

Still, there are many good reasons to stop smoking before conceiving, the experts said.

"If at all possible, try not to smoke when conceiving," Wilens said. "If you think you've conceived and you're smoking, it's best to come off cigarettes as quickly as possible. If you need to use nicotine-replacement therapy, use it for as short a time as possible."

The good news is that smoking prior to pregnancy doesn't seem to boost the risk of ADHD in the unborn child, he said.

The study was released online July 21 in advance of publication in the August print issue of the journal Pediatrics.

More information

For more about ADHD, visit the U.S. Centers for Disease Control and Prevention.

SOURCES: Jin Liang Zhu, M.D., Ph.D., assistant professor of epidemiology, Aarhus University, Denmark; Timothy Wilens, M.D., director, Center for Addiction Medicine, and acting chief, child psychiatry, Massachusetts General Hospital, Boston; August 2014, Pediatrics


'/>"/>
Copyright©2014 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Study Suggests Tough Smoking Laws Might Lower Suicide Risk
2. Study: Smoking may contribute to suicide risk
3. Miriam Hospital study examines smoking prevalence
4. Cancer risk: Aspirin and smoking affect aging of genes
5. Menthol cigarettes linked to increased smoking among teens
6. Study shows cost-effectiveness of smoking cessation counseling during hospitalization
7. Peer influence leads teens to start, stop smoking -- but effect is stronger for starting
8. Peer pressure is weaker for kids to quit smoking
9. E-cigarettes: Not a healthy alternative to smoking
10. Students swayed by relaxing, fun image of hookah smoking ignore health harms
11. E-cigarette use for quitting smoking is associated with improved success rates
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Smoking While Pregnant Linked to ADHD in Children
(Date:5/3/2016)... ... 2016 , ... Safety Week is an annual industry-wide initiative ... Industry Safety Initiative (CISI) and the Incident and Injury-Free (IIF) CEO Forum. ... industry to be leaders in safety. Statistics show that each year, more than ...
(Date:5/3/2016)... Garden City, NY (PRWEB) , ... May 04, 2016 , ... ... as a 2016-2017 inductee into its VIP Woman of the Year Circle. She ... leading networking organization exclusively for professional women, boasting more than 850,000 members and over ...
(Date:5/3/2016)... ... May 03, 2016 , ... ... Journal, patients report dissatisfaction with numerous issues related to medical care in the ... billing, and poor bedside manner from hospital staff. Commenting on this article, the ...
(Date:5/3/2016)... ... May 03, 2016 , ... ... its 2016 Champion Award to Charles D. Pulido, R.Ph., Co-Founder of NCPDP and ... M.S., Ph.D., Pharmacy Advisor and Health IT Specialist, Office of the National Coordinator ...
(Date:5/3/2016)... ... May 03, 2016 , ... Healing Cancer in ... patients and their families move toward recovery and is offered by creator and visionary ... Dr. Carol Francis Talk Radio show considering medical and healing modalities of the ...
Breaking Medicine News(10 mins):
(Date:4/29/2016)... , April 29, 2016 ... H1 2016" market research report that provides an ... comparative analysis at various stages, therapeutics assessment by ... administration (RoA) and molecule type, along with latest ... also reviews key players involved in the therapeutic ...
(Date:4/29/2016)... PARIS , April 29, 2016 ... Jérôme Contamine, Directeur Financier ... la santé, publie ses résultats pour ... Financier du Groupe, Jérôme Contamine, commente ... Groupe et les perspectives pour le ...
(Date:4/29/2016)... 2016 Automation is one of ... to the growing demands for productivity in speed, accuracy, ... systems are already adept of a wide range of ... manual labor. Instrumentation continues to evolve, and is poised ... a few years ago. Originally used mostly by the ...
Breaking Medicine Technology: