We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Article |

Declining Blood Lead Levels and Cognitive Change in Children

Michael Rabinowitz, PhD
JAMA. 1993;270(7):827. doi:10.1001/jama.1993.03510070049018.
Text Size: A A A
Published online


To the Editor.  —The recent contribution by Ruff et al1 demonstrates the benefits from treating lead poisoning with a chelating agent and iron. Ruff et al may have been unaware of a similar situation documented in Taiwan in which a decrease in blood lead level was associated with an improvement in IQ in a group of young children but at even lower lead levels and without medical treatment.2Children attending a kindergarten adjacent to a lead battery recycling factory were exposed to fugitive lead beginning near age 3 years and lasting for 1 to 2 years, until the kindergarten was closed. In September 1988, 32 children were examined while still exposed, and in March 1991, 2 years after the closing, 28 of them were reexamined. Venous blood lead level was determined and the Simon Binet, Chinese Fourth Edition, was administered along with questionnaires. Also, children from three other


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?




Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.