Navigation Links
Early 'Pot' Use May Harm Brain More: Study
Date:11/15/2010

MONDAY, Nov. 15 (HealthDay News) -- People who started smoking marijuana at a young age did much worse on tests of executive brain function than those who started smoking when they were older, a new study shows.

The findings highlight the danger posed by marijuana and the need to develop effective strategies to reduce marijuana use, especially among young people, said the researchers. They noted that adolescence is a critical time in brain development.

Executive function includes planning, flexibility, abstract thinking and inhibition of inappropriate responses.

The study of 33 chronic marijuana smokers and 26 nonsmokers found that, overall, habitual marijuana users appeared less able to maintain focus and were more likely to make errors.

Those who started smoking before age 16 made twice as many mistakes on tests of executive function as those who started smoking the drug after age 16. The early-onset users also smoked three times as much marijuana per week and twice as often as the late-onset users.

"Our data suggest that the earlier you begin smoking, the more marijuana you smoke and the more frequently you smoke. That's an important finding," study author Staci A. Gruber, director of the Cognitive and Clinical Neuroimaging Core at McLean Hospital in Belmont, Mass.m, and an assistant professor of psychiatry at Harvard Medical School, said in a hospital news release.

"We have to be clear about getting the message out that marijuana isn't really a benign substance," she added. "It has a direct effect on executive function. The earlier you begin using it, and the more you use of it, the more significant the effect."

The study was to be presented Nov. 15 at the annual meeting of the Society for Neuroscience in San Diego.

More information

Baycrest has more about executive function.

-- Robert Preidt

SOURCE: McLean Hospital, news release, Nov. 15, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Early Intro to Math Seems to Improve Kids Skills Later
2. National Cancer Institute awards nearly $4 million to University of New Mexico Cancer Center
3. Fred Hutchinson Cancer Research Center scientist receives Presidential Early Career Award
4. Study Warns of Risks for Early Dialysis
5. JCI online early table of contents: Nov. 8, 2010
6. Scientists Report Early Success in Growing Mini Liver in Lab
7. Noninvasive Test for Colon Cancer Shows Promise in Early Trial
8. Early Humans More Advanced Than Thought
9. Healthy Living Can Prevent Nearly 25% of Colorectal Cancers
10. The brains journey from early Internet to modern-day fiber optics -- all in 1 lifetime
11. Haptoglobin as an early serum biomarker of virus-induced type 1 diabetes in rats
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Early 'Pot' Use May Harm Brain More: Study
(Date:8/18/2017)... ... 2017 , ... Hernandez Insurance Agencies, a northern Virginia firm ... DC region, is inaugurating a “New Leash On Life” charity initiative in conjunction ... to be companions for veterans in need. , The Semper K9 organization works ...
(Date:8/18/2017)... ... , ... The Brian Gifford Agency, an Indiana-based firm providing asset protection and ... Academy in a charity drive to provide for at-risk children and teens in the ... is a nonprofit organization that has offered critical programs to at-risk and foster children ...
(Date:8/18/2017)... ... August 18, 2017 , ... With over 16,000 ... bioidentical hormone replacement therapy and integrative medicine, has become a frontrunner for people ... such as menopause, andropause, thyroid disorder and adrenal insufficiencies. , Founded in ...
(Date:8/18/2017)... Vermont (PRWEB) , ... August 18, 2017 , ... ... phone numbers and call tracking and monitoring solutions, announced today the launch of ... site include a modern navigation and aesthetic, fully responsive design, and an enhanced ...
(Date:8/18/2017)... ... 18, 2017 , ... “Beyond Our Imaginations: The Infinite God”: shows the importance ... God” is the creation of published author, Mark Lawrence, born in Michigan, the author ... problem with becoming a greater man of God is that I have to be ...
Breaking Medicine News(10 mins):
(Date:8/17/2017)... 17, 2017 DarioHealth Corp. (NASDAQ: DRIO), ... health and big data solutions, announced today that ... and non-U.S. investors for the sale of shares ... the Company,s newly designated Series B Convertible Preferred ... expects to conduct a closing with respect to ...
(Date:8/15/2017)... 2017  Axium Pharmaceuticals Inc., the creator of the drug Truveta ... beginning stages of an IPO. The United States ... average cost of a prescription epilepsy drug being $450.00-$1200.00 for a one ... AXIUM PHARMACEUTICALS, INC ... Another staggering figure is the fact that Americans spent $42 billion ...
(Date:8/11/2017)... 11, 2017 DarioHealth Corp. (NASDAQ: DRIO), a ... big data solutions, today announced that it will release ... and host a conference call at 9:00am ET. The ... financial results and its strategy and outlook for the ... Erez Raphael , Chief Executive Officer, and ...
Breaking Medicine Technology: