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 ......
Editorial |

Weeding Through Marijuana’s Effects on the Brain

Francesca M. Filbey, PhD1
[+] Author Affiliations
1Center for BrainHealth, School of Behavioral and Brain Sciences, The University of Texas at Dallas
JAMA Psychiatry. 2016;73(8):773-774. doi:10.1001/jamapsychiatry.2016.1133.
Text Size: A A A
Published online


The changes in legislation surrounding cannabis use in the United States and worldwide have placed researchers in a race against time to get ahead of potential pitfalls and quagmires that come with venturing into the unknown of whether cannabis affects the brain. Statistics illustrating that 4.2 million (60.9%) of 6.9 million illicit drug users in the United States with a substance use disorder have cannabis use disorder1 brings this problem to bear. In vivo human neuroimaging research has delivered indicators of divergent brain patterns associated with cannabis use.2 Along with the increasing number of findings demonstrating altered brain structure and function associated with cannabis use is also the mounting need to determine whether these brain anomalies are the cause or the consequence of cannabis use. The implications of the answer to this important question are boundless. If we knew that these alterations precede the onset of cannabis use, we can identify individuals who would be at risk for cannabis use disorders and intervene early on. On the other hand, if observed alterations are a consequence of cannabis use, individuals (and clinicians) could make informed decisions surrounding cannabis use and its applicability. Of timely relevance, this knowledge could guide reasonable, justified, and relevant policies.

Sign in

Purchase Options

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

First Page Preview

View Large
First page PDF preview





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.

See Also...
Articles Related By Topic
Related Collections
PubMed Articles