Exposure to Tobacco in Womb One of Possible Causes of ADHD

Research indicates that prenatal exposure to cigarette smoke is one of many possible causes of ADHD.
A recent article published in Biological Psychiatry indicates that babies exposed to smoke in the womb have a higher risk of developing ADHD.
For babies who are genetically predisposed to ADHD, smoking during pregnancy drastically increases the likelihood of the disorder. Interestingly, children who are at higher risk for developing ADHD also are at higher risk for substance-abuse disorders.
"When the child has either or both of two specific forms of dopamine pathway genes (DAT and DRD4), and was exposed to cigarette smoking in utero, the risk for having combined type ADHD (many inattention and hyperactive/impulsive symptoms) increased 3 to 9 fold," stated one of the study's authors, Dr. Rosalind.

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