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Brain Shrinkage In ADHD Not Caused By Medications

Date:
October 9, 2002
Source:
NIH/National Institute Of Mental Health
Summary:
A 10-year study by National Institute of Mental Health (NIMH) scientists has found that brains of children and adolescents with Attention Deficit Hyperactivity Disorder (ADHD) are 3-4 percent smaller than those of children who don't have the disorder – and that medication treatment is not the cause. Indeed, in this first major study to scan previously never-medicated patients, they found "strikingly smaller" white matter volumes in children who had not taken stimulant drugs. Still, the course of brain development in the ADHD patients paralleled that of normal subjects, suggesting that whatever caused the disorder happened earlier.

A 10-year study by National Institute of Mental Health (NIMH) scientists has found that brains of children and adolescents with Attention Deficit Hyperactivity Disorder (ADHD) are 3-4 percent smaller than those of children who don't have the disorder – and that medication treatment is not the cause. Indeed, in this first major study to scan previously never-medicated patients, they found "strikingly smaller" white matter volumes in children who had not taken stimulant drugs. Still, the course of brain development in the ADHD patients paralleled that of normal subjects, suggesting that whatever caused the disorder happened earlier. Drs. Xavier Castellanos, Judith Rapoport, NIMH Child Psychiatry Branch, and colleagues, report on their magnetic resonance imaging (MRI) study of 152 boys and girls with ADHD in the October 9, 2002 Journal of the American Medical Association.


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The above story is based on materials provided by NIH/National Institute Of Mental Health. Note: Materials may be edited for content and length.


Cite This Page:

NIH/National Institute Of Mental Health. "Brain Shrinkage In ADHD Not Caused By Medications." ScienceDaily. ScienceDaily, 9 October 2002. <www.sciencedaily.com/releases/2002/10/021009080635.htm>.
NIH/National Institute Of Mental Health. (2002, October 9). Brain Shrinkage In ADHD Not Caused By Medications. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2002/10/021009080635.htm
NIH/National Institute Of Mental Health. "Brain Shrinkage In ADHD Not Caused By Medications." ScienceDaily. www.sciencedaily.com/releases/2002/10/021009080635.htm (accessed April 16, 2014).

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