Each 0.48 µmol/L (10µg/dl) in children. = 4 to 7 IQ points (US Acad. Pediatrics).
Industry/ Australian government consensus of 3-5 IQ points.
Effects on behaviour are FAR WORSE.
Delinquency rates are 8 times higher in the top 30% of bone lead. Needleman
1996. Needleman, Herbert L. et al, "Bone Lead Levels and Delinquent
Behavior," JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION Vol. 275, No. 5 (February 7,
Measurable adverse behaviour changes in 2 year olds Mendelsohn 1999. Alan L.
Mendelsohn, Benard P. Dreyer, Arthur H. Fierman, Carolyn M. Rosen, Lori A.
A. Kruger, Sylvia W. Lim, and Cheryl D. Courtlandt "Low-Level Lead Exposure and
Behavior in Early Childhood Pediatrics 1998; 101: e10