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Study: Prenatal exposure to tobacco smoke on inhibition control

Date:
May 14, 2014
Source:
The JAMA Network Journals
Summary:
Individuals prenatally exposed to tobacco smoke exhibited weaker response in some regions of the brain while processing a task that measures inhibition control (the ability to control inappropriate responses). Prenatal tobacco smoke exposure is a risk factor for adverse physical and mental outcomes in children. Growing evidence suggests that smoking during pregnancy may increase the risk of psychopathology such as attention-deficit/hyperactivity disorder (ADHD). Research on ADHD has suggested that individuals with the disorder may exhibit poor inhibitory control.

Individuals prenatally exposed to tobacco smoke exhibited weaker response in some regions of the brain while processing a task that measures inhibition control (the ability to control inappropriate responses).

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Prenatal tobacco smoke exposure is a risk factor for adverse physical and mental outcomes in children. Growing evidence suggests that smoking during pregnancy may increase the risk of psychopathology such as attention-deficit/hyperactivity disorder (ADHD). Research on ADHD has suggested that individuals with the disorder may exhibit poor inhibitory control.

Functional magnetic resonance imaging was performed at age 25 years on young adults who had been followed since birth to examine the effect of prenatal tobacco smoke exposure on neural activity implicated in externalizing disorders, such as ADHD, with measures of inhibitory control. Lifetime ADHD symptoms were measured over a period of 13 years (from 2 to 15 years of age). The study included 178 mothers (140 of whom were nonsmokers) and 175 offspring for whom ADHD symptoms were measured throughout childhood.

Individuals prenatally exposed to tobacco smoke exhibited less activity in regions of the brain in response to a task that measured inhibitory control vs. neutral stimuli. The group prenatally exposed to tobacco smoke also exhibited more lifetime ADHD symptoms.

"Therefore, our findings strengthen the importance of smoking cessation programs for pregnant women, and women planning to become pregnant, to minimize prenatal exposure to tobacco smoke by the offspring," researchers noted.


Story Source:

The above story is based on materials provided by The JAMA Network Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nathalie E. Holz, Regina Boecker, Sarah Baumeister, Erika Hohm, Katrin Zohsel, Arlette F. Buchmann, Dorothea Blomeyer, Christine Jennen-Steinmetz, Sarah Hohmann, Isabella Wolf, Michael M. Plichta, Andreas Meyer-Lindenberg, Tobias Banaschewski, Daniel Brandeis, Manfred Laucht. Effect of Prenatal Exposure to Tobacco Smoke on Inhibitory Control. JAMA Psychiatry, 2014; DOI: 10.1001/jamapsychiatry.2014.343

Cite This Page:

The JAMA Network Journals. "Study: Prenatal exposure to tobacco smoke on inhibition control." ScienceDaily. ScienceDaily, 14 May 2014. <www.sciencedaily.com/releases/2014/05/140514165414.htm>.
The JAMA Network Journals. (2014, May 14). Study: Prenatal exposure to tobacco smoke on inhibition control. ScienceDaily. Retrieved November 20, 2014 from www.sciencedaily.com/releases/2014/05/140514165414.htm
The JAMA Network Journals. "Study: Prenatal exposure to tobacco smoke on inhibition control." ScienceDaily. www.sciencedaily.com/releases/2014/05/140514165414.htm (accessed November 20, 2014).

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