Navigation Links
Pot Use-Low IQ Link Challenged in Study
Date:1/15/2013

By Randy Dotinga
HealthDay Reporter

MONDAY, Jan. 14 (HealthDay News) -- A new analysis challenges previous research that suggested teens put their long-term brainpower in danger when they smoke marijuana heavily.

Instead, the analysis indicated that the earlier findings could have been thrown off by another factor -- the effect of poverty on IQ.

The author of the new analysis, Ole Rogeberg, cautioned that his theory may not hold much water. "Or, it may turn out that it explains a lot," said Rogeberg, a research economist at the Ragnar Frisch Center for Economic Research in Oslo, Norway.

The authors of the initial study responded to a request for comment with a joint statement saying they stand by their findings. "While Dr. Rogeberg's ideas are interesting, they are not supported by our data," wrote researchers Terrie Moffitt, Avshalom Caspi and Madeline Meier. Moffitt and Caspi are psychology professors at Duke University, while Meier is a postdoctoral associate there.

Their study, published in August in the Proceedings of the National Academy of Sciences, attracted media attention because it suggested that smoking pot has more than short-term effects on how people think.

Based on an analysis of mental tests given to more than 1,000 New Zealanders when they were 13 and 38, the Duke researchers found that those who heavily used marijuana as teens lost an average of eight IQ points over that time period. It didn't seem to matter if the teens later cut back on smoking pot or stopped using it entirely.

In the short term, people who use marijuana have memory problems and trouble focusing, research has shown. So, why wouldn't users have problems for years?

"The question reminds me of something adults say when kids make weird faces: 'Careful, or your face will stay that way,'" Rogeberg said. "It is certainly possible that in the long term, heavy cannabis use has permanent or persistent
'/>"/>

Copyright©2012 ScoutNews,LLC.
All rights reserved  

Page: 1 2 3

Related medicine news :

1. Tampa Residents Challenged to Lose Weight for Cash
2. Are Rhesus Monkeys Musically Challenged?
3. Even Some Scientists Are Math-Challenged
4. Proposed testosterone testing of some female olympians challenged by Stanford scientists
5. Doctors Often Miss Signs of Problem Drinking in Patients, Study Finds
6. No Link Between Low Birth Weight, Asthma: Study
7. Study finds knee replacement surgery may lead to weight gain
8. NIH scientists identify protective role for antibodies in Ebola vaccine study
9. Thigh Is Safer Vaccination Site Than Arm for Toddlers, Study Finds
10. Saliva gland test for Parkinsons shows promise, study finds
11. Study finds poorer outcomes for obese patients treated for lumbar disc herniation
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Pot Use-Low IQ Link Challenged in Study
(Date:7/24/2014)... July 24, 2014 Memantine was initially developed ... marketed in Germany under the brand name Akatinol; it was ... as Ebixa and in the USA to Forest Labs as ... million in 2013. In the US, Forest reported Namenda sales ... expiry in Canada, Australia and the European region has increased ...
(Date:7/24/2014)... July 24, 2014 As the age ... to egg freezing as a way to ensure future ... otherwise decline with advancing reproductive age. Vitrification technology, a ... cutting edge medical technology that allows a woman to ... peak fertility years, which are then stored for future ...
(Date:7/24/2014)... with high-throughput data generated by breast cancer biologists ... computational method to determine how gene networks are ... as they respond to potential cancer therapy agents., ... each other in laboratory-grown cells is described in ... PLOS Computational Biology . , The method ...
(Date:7/24/2014)... In a recent report by CBS News, the district ... to criminal penalties associated with possession of small amounts of ... in Washington DC, giving it one of the most tolerant ... for possession of one ounce of marijuana or less with ... than an ounce of marijuana remain criminal offenses under the ...
(Date:7/24/2014)... from Penn Medicine shows that incisionless transcatheter aortic ... stay by 30 percent and has no impact ... conventional transfemoral TAVR, which requires an incision in ... the current issue of Circulation: Cardiovascular Interventions ... aortic valve without a traditional open-heart surgical approach. ...
Breaking Medicine News(10 mins):Health News:Memantine Discussed in New Comprehensive Patent Search Report by Ark Patent Intelligence Published at MarketPublishers.com 2Health News:Memantine Discussed in New Comprehensive Patent Search Report by Ark Patent Intelligence Published at MarketPublishers.com 3Health News:Expanded Financial Options for Women Interested in Proactive Egg Freezing at Shady Grove Fertility 2Health News:Expanded Financial Options for Women Interested in Proactive Egg Freezing at Shady Grove Fertility 3Health News:Expanded Financial Options for Women Interested in Proactive Egg Freezing at Shady Grove Fertility 4Health News:Gene changes in breast cancer cells pinpointed with new computational method 2Health News:Gene changes in breast cancer cells pinpointed with new computational method 3Health News:Washington D.C. Decriminalizes Marijuana 2Health News:Penn study: Incisionless transcatheter aortic valve replacement surgery cuts hospital length of stay 2
... treating severe and complex wounds in children that decreases the ... in Wound Repair and Regeneration shows that this technique has ... life-saving. ,“This wound therapy is usually delivered via ... wound base through a sponge sealed to the wound by ...
... Journal of Gastroenterology suggests that smoking may determine which ... who suffer from Crohn’s disease. Where the disease is ... surgical treatment. ,“In patients who smoke, Crohn’s ... intestine, rather than the colon,” says study author Dr. ...
... been recommended for medical conditions such as endometriosis, but ... for women who dislike menstruation or find it inconvenient. ... is it a reasonable lifestyle choice, asks Paula Derry, ... ,Birth control options that reduce or eliminate periods are ...
... can be highly addictive, warn two doctors in this week’s ... drugs is often forgotten, write Drs Chris Ford and Beth ... three patients with addictions to Nurofen plus (ibuprofen and codeine ... for its approved indications, but their use had escalated as ...
... bad news for older women who like their meat smoked or ... that post-menopausal women who consumed the most grilled, barbecued or smoked ... of breast cancer. Big meat-eaters who also skimped on fruit and ... scientists led by Dr. Susan E. Steck of the University of ...
... of America will hold a hearing on a neglected yet, crucial ... In America, one in three children do not have ... 25 million.,As for Medicaid, with the poorest children this is of ... its low reimbursement rates. , Lack of dental insurance, ...
Cached Medicine News:Health News:Should Menstrual Suppression Be a Lifestyle Choice? 2Health News:Barbeque Lovers Warned To Load On Fruits And Vegetables 2Health News:More Than a Toothache 2
(Date:7/24/2014)... July 24, 2014  Restore Health, a leading ... pharmaceuticals, announced that it is now offering pharmacogenetics ... each individual based upon their particular genetic makeup. ... the interaction between a patient,s genetics and their ... excited to provide this new service to healthcare ...
(Date:7/24/2014)... CITY, Calif., July 24, 2014  Abaxis, Inc. (NasdaqGS: ... point-of-care blood analysis systems, today reported financial results for ... First quarter overview: , Revenues of $47.5 ... , Diluted EPS of $0.21, up 50% over last ... Medical market revenues of $7.2 million, up 20% over ...
(Date:7/24/2014)... MOUNTAIN VIEW, Calif. , July 24, 2014 ... ), a leading provider of medication and supply ... hold a conference call Thursday, July 31, to ... What:  , Omnicell Second Quarter 2014 earnings ... 2014, 1:30 p.m. PTWho:  , Randall Lipps, chairman, ...
Breaking Medicine Technology:Restore Health Launches Pharmacogenetic Testing, Enhancing Its Suite of Personalized Medicine Goods and Services 2Restore Health Launches Pharmacogenetic Testing, Enhancing Its Suite of Personalized Medicine Goods and Services 3Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 2Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 3Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 4Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 5Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 6Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 7Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 8Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 9Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 10Abaxis Reports Financial Performance for the First Quarter of Fiscal 2015 11Omnicell to Release Second Quarter 2014 Earnings Results on July 31 2
... N.Y., Oct. 19 AccuVein LLC today announced a ... pharmaceutical and medical devices distribution company, providing the AccuVein ... to customers in Greece, Spain and Portugal. The AccuVein ... IV infusion and blood donation by projecting a pattern ...
... Pharmaceutical Research and Manufacturers of America (PhRMA) ... statement today regarding appropriate incentives for continued biotechnology ... healthcare providers, and elected leaders at the state ... responsible, abbreviated approval pathway for biosimilars that includes ...
Cached Medicine Technology:AccuVein Signs Multiple-Country Distribution Agreement in Europe for Vein Illumination Device 2PhRMA Statement Supporting Fair Incentives for Biologics Innovation 2PhRMA Statement Supporting Fair Incentives for Biologics Innovation 3PhRMA Statement Supporting Fair Incentives for Biologics Innovation 4PhRMA Statement Supporting Fair Incentives for Biologics Innovation 5
The Accuref 8001 allows you to measure much smaller pupils than conventional units and 3 step Target light adjuster ensures accurate results....
... is an Auto Refractor/Keratometer with ... refinement. Electronic elevation, automatic alignment, ... accuracy and all the other ... Marco Automatic Refractors/Keratometer famous, make ...
Sterile perfluorocarbon for intraocular Application....
Sterile Silicone Oil for Intraocular Application....
Medicine Products: