ADHD

Pregnant woman  and cell phone texting

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Exposure to radiation from cell phones during pregnancy affects the brain development of offspring, potentially leading to hyperactivity, Yale School of Medicine researchers have determined.

The results, based on studies in mice, are published in the March 15 issue of Scientific Reports, a Nature publication.

“This is the first experimental evidence that fetal exposure to radiofrequency radiation from cellular telephones does in fact affect adult behavior,” said senior author Dr. Hugh S. Taylor, professor and chief of the Division of Reproductive Endocrinology and Infertility in the Department of Obstetrics, Gynecology & Reproductive Sciences.

Taylor and co-authors exposed pregnant mice to radiation from a muted and silenced cell phone positioned above the cage and placed on an active phone call for the duration of the trial. A control group of mice was kept under the same conditions but with the phone deactivated.

The team measured the brain electrical activity of adult mice that were exposed to radiation as fetuses, and conducted a battery of psychological and behavioral tests. They found that the mice that were exposed to radiation tended to be more hyperactive and had reduced memory capacity. Taylor attributed the behavioral changes to an effect during pregnancy on the development of neurons in the prefrontal cortex region of the brain.

Attention deficit hyperactivity disorder (ADHD), is a developmental disorder associated with neuropathology localized primarily to the same brain region, and is characterized by inattention and hyperactivity.

“We have shown that behavioral problems in mice that resemble ADHD are caused by cell phone exposure in the womb,” said Taylor. “The rise in behavioral disorders in human children may be in part due to fetal cellular telephone irradiation exposure.”

Taylor said that further research is needed in humans to better understand the mechanisms behind these findings and to establish safe exposure limits during pregnancy. Nevertheless, he said, limiting exposure of the fetus seems warranted. [continue reading…]

boy looking fro help

istock

Formal training in parenting strategies is a low-risk, effective method for improving behavior in preschool-age children at risk for developing attention deficit hyperactivity disorder (ADHD), while there is less evidence supporting the use of medications for children younger than 6 years old, according to a new report from the U.S. Department of Health and Human Services’ Agency for Healthcare Research and Quality (AHRQ).
The report found that formal parenting interventions—known as parent behavior training or PBT—are supported by strong evidence for effectiveness for children younger than the age of 6, with no reports of complications or harms. However, one large barrier to the success of PBT is parents who drop out of therapy programs, the report found. For children older than age 6, the report found that methylphenidate (sold under the brand name Ritalin) and another drug used to treat ADHD symptoms, atomoxetine (sold as Strattera), are generally safe and effective for improving behavior, but their effects beyond 12 to 24 months have not been well studied. Little information is available about the long-term effects of other medications used to treat ADHD symptoms.
The report, a comparative effectiveness review prepared for AHRQ’s Effective Health Care Program by the McMaster Evidence-based Practice Center in Hamilton, Ontario, is available at www.effectivehealthcare.ahrq.gov. [continue reading…]

ADHD Awareness Week

Boy in school looking puzzled

October 16 – 22, 2011 is National Attention Deficit Hyperactivity Disorder (ADHD) Awareness Week.

ADHD is one of the most common mental disorders affecting children. It affects boys almost twice as often as girls. While some children outgrow it, ADHD affects many adults also. Behavior therapy and medication can help improve the symptoms of ADHD.MORE INFORMATION