Prenatal lead and tobacco leads to attention deficit disorder?

Lead and tobacco exposure in children leads to increased risk of attention-deficit disorder?

Researchers at the Cincinnati College of Medicine published a recent study in the journal, Pediatrics, which suggests that both prenatal exposure to lead and tobacco smoke lead to an increased risk of attention-deficit disorder in children.  In fact, exposure to both dramatically increased the risk of ADHD.

Results of their study:

  • Prenatal tobacco exposure (adjusted odds ratio [aOR]: 2.4 [95% CI: 1.5-3.7]) and higher current blood lead concentrations (aOR for third versus first tertile: 2.3 [95% CI: 1.5-3.8]) were independently associated with ADHD.
  • Compared with children with neither exposure, children with both exposures (prenatal tobacco exposure and third-tertile lead levels) had an even greater risk of ADHD (aOR: 8.1 [95% CI: 3.5-18.7]) than would be expected if the independent risks were multiplied (tobacco-lead exposure interaction term, P < .001).

The study authors concluded that reduction in exposure to both lead and tobacco smoke may be an important avenue to prevent ADHD.

Source:

Froehlich TE, Lanphear BP, Auinger P, Hornung R, Epstein JN, Braun J, Kahn RS.  Association of tobacco and lead exposures with attention-deficit/hyperactivity disorder.  Pediatrics. 2009 Dec;124(6):e1054-63. Epub 2009 Nov 23.

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One thought on “Prenatal lead and tobacco leads to attention deficit disorder?

  1. Claire November 20, 2010 / 5:28 am

    With the prevalent use of lead on industrial products, and today’s rising pollution situation, it seems that ADHD is going to be a rising incidence and an unavoidable disorder.

    There will also be a rising appeal for a close to nature living. And children will be safer when boarded at wilderness schools

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