0
Health Agencies Update |

Environment and Autism

Bridget M. Kuehn
JAMA. 2011;306(8):815. doi:10.1001/jama.2011.1200.
Text Size: A A A
Published online

Extract

Environmental influences may play a more prominent role in the development of autism than previously thought, according to a study funded by National Institute of Mental Health.

The study (Hallmayer J et al. Arch Gen Psychiatry. 10.1001/archgenpsychiatry.2011.76 [published online ahead of print July 4, 2011]) involved 192 California twin pairs born between 1987 and 2004 in which at least 1 twin had a diagnosis of an autism spectrum disorder. The researchers found that shared environmental factors accounted for 55% of the risk of developing autism and 58% of the risk of developing autism spectrum disorders, while genetic factors accounted for 37% and 38% of such risks, respectively. Previous studies had suggested that as many as 90% of cases of autism spectrum disorders may be related to genetic factors.

Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
/>
First page PDF preview

Figures

Tables

References

CME
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.
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.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Multimedia

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

Sign In to Access Full Content

Related Content

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

Articles Related By Topic
Related Topics
PubMed Articles
Jobs
brightcove.createExperiences();