Lead Levels May Be The Cause Of ADHD?
January 29, 2010
It is not the first time the theory has been presented that lead may be one of the main causes of Attention Deficit/Hyperactivity Disorder, but it is the first time they have found strong scientific evidence to back it.
Joel Nigg of the Oregon Health & Science University has performed two studies to find proof of the link between the two.
According to his findings, up to 30% of the cause of ADHD could be specifically related to higher levels of lead that are found within the blood.
This lead gathers and sticks to the striatum and frontal cortex within a child’s brain.
This leads certain genes to become overly active, and others to become inactive.
With each study, first a group of children with severe of ADHD were tested versus a control group.
In both instances of blood tests and patterns of behavior, the ADHD group had higher concentrations of lead in the blood.
The study has been published in Current Directions in Psychological Science.