ADHD en milieu.*
Uit een Amerikaanse studie onder 4.700 kinderen blijkt dat ADHD bij wel een derde van de kinderen het gevolg is van roken van de moeder tijdens de zwangerschap en de blootstelling van kinderen aan lood. Rokende moeders geven hun kinderen 2,5 keer meer kans op ADHD. Hoge bloedwaarden aan lood (meer dan 2 mcg per dl) geven een wel 4 keer hogere kans.
ADHD
Linked To Lead Exposure And Smoking During Pregnancy
About
one third of ADHD cases in the United States are probably linked to the mother
smoking during pregnancy and exposure to lead during childhood, say researchers
from Cincinnati Children's Hospital Medical Center.
(ADHD = Attention Deficit Hyperactivity Disorder)
You can read about this new study in the journal Environmental Health
Perspectives.
Bruce P. Lanphear and team wanted to examine the link between exposures to
tobacco smoke and environmental lead and ADHD.
Information on 4,704 children, aged 4-15, was examined by the researchers. This
total included 4.2% who suffered from ADHD. They found that a child whose mother
smoked while he/she was in her womb is 2.5 times more likely to develop ADHD
than a child whose mother had not smoked while she was pregnant.
They also found that a child whose lead blood levels were over 2 micrograms per
deciliter had a 4 times higher likelihood of having ADHD, when compared to a
child whose lead blood levels were under 0.8 micrograms per deciliter.
About 300,000 kids under five in the USA have lead blood levels above the
nationally acceptable limit of 10 micrograms per deciliter.
If the 4.2% of children out the 4,704 had ADHD - we could extrapolate that 1.8
million American kids under 15 have ADHD. Current estimates for ADHD among US
children range from 3% to 8%.
"Exposures to Environmental Toxicants and Attention Deficit
Hyperactivity Disorder in US Children"
Joe Braun, Robert S. Kahn, Tanya Froehlich, Peggy Auinger and Bruce P. Lanphear
doi:10.1289/ehp.9478 (available at http://dx.doi.org/)
Environmental Health Perspectives
Click
Here To Download Full Article (PDF)
(Okt.
2006) (Opm.
Vooral lood uit de benzine en industriële verbranding heeft wereldwijd
voor een enorme loodverspreiding gezorgd waardoor water, lucht en voedsel
vervuild kunnen zijn. Bestrijding van te hoge bloedwaarde lood zie ImmunoPro.)