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MikeGangGree... Icon : (22 November 2015 - 04:53 PM) BOOOOOOOOOOOOO
MikeGangGree... Icon : (22 November 2015 - 04:54 PM) Hate my life
vjdbbq Icon : (22 November 2015 - 06:11 PM) SLIDE YOU f*** HEAD SLIDE !!!!!!!!!!!!!!!!!!
vjdbbq Icon : (22 November 2015 - 06:11 PM) I don't want to see Geno !!!!!!!!!!!!!!!
MikeGangGree... Icon : (22 November 2015 - 11:42 PM) Report is mangold has a severe cut on his hand
ROBJETS Icon : (23 November 2015 - 02:12 AM) Jets playoff hopes are seriously on the edge of going down the drain with all the close records, tie breakers and better division win %.Steelers and Chiefs are prime for the 2 wild card spots. Jets pretty much need to run the table at this point for even a shot at a wildcard.
ROBJETS Icon : (23 November 2015 - 02:14 AM) Sucks big time after the season started so promising. 4-1 to total implosion. It sucks even more because we are so used to it we expect it every year now.
vjdbbq Icon : (23 November 2015 - 08:52 AM) Nice ass rob
MikeGangGree... Icon : (23 November 2015 - 12:31 PM) Jets cut copels today
MikeGangGree... Icon : (23 November 2015 - 12:32 PM) Coples
NJAzrael71 Icon : (23 November 2015 - 01:24 PM) Scott20119.....how about you go troll and spam some other site? Spammers can go f*** themselves.
ROBJETS Icon : (23 November 2015 - 05:39 PM) vjdbbq you have some serious metal and IQ issues. Why dont you go back to your old ways of never posting when you had only 5 or 6 posts since your join date in 07.
ROBJETS Icon : (23 November 2015 - 05:39 PM) mental
ROBJETS Icon : (23 November 2015 - 05:49 PM) Thanks for the news MGG. If the FO didn't try to shop him before the trade deadline it was stupid because releasing him now they get nothing. Maybe no one would've traded but if so even a 6th or 7th round draft pick or someone the team might be able to use would've been better than nothing
ROBJETS Icon : (23 November 2015 - 05:51 PM) He sucked this year but did have a career best 6.5 sacks in 2014 so a team change might work out for him.
azjetfan Icon : (23 November 2015 - 07:36 PM) Couples will land on the Bills when Rex grabs him off waivers
azjetfan Icon : (23 November 2015 - 07:37 PM) in the mean time does anyone think we would have a better record under Rex with this same team?
ROBJETS Icon : (23 November 2015 - 07:53 PM) Couples....it wouldn't surprise me and .....with Rex its hard to tell. His defensive scheming may be the best in football but this team has had a lot of injuries on both sides of the ball which has absolutely cost the team at least 3 games ......so as far as better record. it would be simply an opinion. Bowles has done a good job so I have no problems with him other than time out usage. That said I feel rex got a bad rap because he never had a qb even on Fitz caliber and Fitz is just average. But that is in the past so no sense even debating about it now. Rex is with a new team and we finally have a qb who doesn't completely suck. Still wish we had a true high level franchise qb though.
azjetfan Icon : (23 November 2015 - 09:34 PM) Watching the game and I am finding myself yelling at the bills offensive playcalling
azjetfan Icon : (23 November 2015 - 09:34 PM) Just stipupidity
azjetfan Icon : (23 November 2015 - 09:35 PM) run the ball every time on first and second with zero sucess
azjetfan Icon : (23 November 2015 - 09:36 PM) Out D is no where near as good as it should be under Bowles. I'm not sure why. I guess it's easy to blame Bowles but the bend and don't break philosophy isn't working
azjetfan Icon : (23 November 2015 - 09:39 PM) They should ban that pick play.
MikeGangGree... Icon : (23 November 2015 - 11:54 PM) As bad as we have played lately we are still a better coached team without Rex. Rex still has no clue how to manage the clock
MikeGangGree... Icon : (24 November 2015 - 12:03 AM) See. Can't manage the clock
vjdbbq Icon : (24 November 2015 - 08:05 AM) Hello Rob
vjdbbq Icon : (24 November 2015 - 08:06 AM) They cut coples to save money in case he got hurt practicing since he hardly played ; a business move .
Jetsfan115 Icon : (24 November 2015 - 12:58 PM) our D was better with shit CBs last year. rex is just better at calling a defense then bowles
Jetsfan115 Icon : (24 November 2015 - 12:58 PM) hopefully milliner comes back. where has mcdougle been? revis hurt and cro hurt
Jetsfan115 Icon : (25 November 2015 - 02:37 PM) coples picked up by miami. we play him on sunday now lol
Jetsfan0099 Icon : (25 November 2015 - 05:08 PM) We need a real edge rusher
Jetsfan0099 Icon : (25 November 2015 - 05:08 PM) We are gonna trade Richardson or Wilkerson after this season, hopefully we can then get a edge rusher to compliment them
Jetsfan0099 Icon : (25 November 2015 - 05:10 PM) I never wanted the Jets to draft Coples, he was clearly going to be a bust
Jetsfan0099 Icon : (25 November 2015 - 05:10 PM) hes not athletic enough for OLB either, doesn't have enough fluidity in the hips. He can be a decent player, but he needs to be a interior pass rusher
vjdbbq Icon : (26 November 2015 - 07:45 AM) Happy Thanksgiving to Rob !!!!!!!!!!!!!!!!!!!
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azjetfan Icon : (Yesterday, 09:50 PM) Why does this site have all these crazy people?
ROBJETS Icon : (Today, 08:02 AM) Revix
ROBJETS Icon : (Today, 08:04 AM) Revis out week 12 vs. Fish .......concussion .....per bleacher report
ROBJETS Icon : (Today, 08:07 AM) I hear you AZ but this is the Internet. Nutty people on pretty much every site, mouthy kids, and tough people on the net but not in real life.......just try to ignore them. I'm doing my best to. That said no one is perfect. We all have our issues like me with essays....lol
vjdbbq Icon : (Today, 08:33 AM) Hello AZ
vjdbbq Icon : (Today, 08:34 AM) We are the sane ones ; you guys are crazy !!!!!!!! HAHAHAHAHA!!!!!
vjdbbq Icon : (Today, 12:18 PM) Why is Matt Snell pissed at the Jets ?
vjdbbq Icon : (Today, 12:28 PM) Did Rob say something to Matt Snell ?
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Teen Cannabis Use Linked To Iq Loss

#1 User is offline   azjetfan Icon

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Posted 02 September 2012 - 02:54 PM



The University of Otago

Wednesday, 29 August 2012

The multi-disciplinary study showed that people who started smoking cannabis as teenagers may suffer from IQ decline when they're in their thirties.
Image: diego_cervo/iStockphoto

Persistent cannabis users who started using the drug before age 18 show an average IQ decline of 8 points and other signs of impaired mental functioning by age 38, according to world-first research emerging from the University of Otago’s long-running Dunedin Multidisciplinary Study.

The Study has followed the progress of 1000 Dunedin-born people since their birth in 1972/73 and is one of the most detailed studies of human health and development ever undertaken. The latest findings are newly published in a paper appearing in the US journal PNAS Plus co-authored by researchers from Otago, Duke University and King’s College London.

Below is a fact sheet of the study produced by the researchers.

The findings:

We studied the association between persistent cannabis use and IQ decline and asked whether IQ decline was concentrated among adolescent-onset cannabis users. Findings come from the Dunedin Multidisciplinary Health and Development Study. The study has followed a group of 1,037 children, who were born in 1972-73 in Dunedin, New Zealand, from birth to age 38 years, with 96% of the sample taking part at age 38. IQ was tested at age 13, before cannabis use, and again at age 38, after some study members had used cannabis for many years.

We found that:

1. Adolescent-onset cannabis users, but not adult-onset cannabis users, showed marked IQ decline from childhood to adulthood. For example, individuals who started using cannabis in adolescence and used it for years thereafter showed an average 8-point IQ decline.
2. Quitting or reducing cannabis use did not appear to fully restore intellectual functioning among adolescent-onset former persistent cannabis users.
3. IQ decline could not be explained by alcohol or other drug use or by reduced years of education among persistent cannabis users.
4. Third-party informants (e.g., friends, relatives) reported noticing more attention and memory problems in everyday life among persistent cannabis users (e.g, losing focus when they should be paying attention, forgetting to do errands, return calls, pay bills).
Why are these findings important?

The importance of “before and after” IQ testing. Previous studies have suggested that adolescents may be particularly vulnerable to the effects of cannabis on IQ. However, until now, research had not been able to rule out the possibility that poorer IQ test performance among adolescent-onset cannabis users predates cannabis-use initiation. We showed that regardless of their initial (pre-cannabis) test performance, adolescent-onset cannabis users performed worse than non-users and adult-onset cannabis users later when they were tested in adulthood.

The findings are consistent with speculation that cannabis use in adolescence, when the brain is undergoing critical development, may have neurotoxic effects.

What is the size of the IQ decline? The extent of IQ decline among adolescent-onset persistent cannabis users (approximately 8 points) is non-trivial. For example, an average person has an IQ of 100, placing them in the 50th percentile for intelligence compared to their same-age peers. If this average person loses 8 IQ points, they drop from the 50th to the 29th percentile for intelligence.

Why is an 8-point decline in IQ significant? Research has shown that IQ is a strong determinant of a person’s access to a college education, their lifelong total income, their access to a good job, their performance on the job, their tendency to develop heart disease, Alzheimer’s disease, and even early death. Individuals who lose 8 points in their teens and twenties may be disadvantaged, relative to their same-age peers, in most of the important aspects of life and for years to come.

How many people does this affect? Only approximately 5% of the 1,037 individuals born in one year in Dunedin became ‘adolescent-onset’ cannabis users. Thus, any effect of cannabis on the brain is confined to a relatively small segment of the population. Nonetheless, findings are concerning given that fewer adolescents today believe that cannabis use presents a serious health risk.

How we measured cannabis use:

We measured cannabis use in two ways: cannabis dependence and regular cannabis use. Persistence of cannabis dependence was defined as the total number of study waves out of five (ages 18, 21, 26, 32, and 38) at which a study member met criteria for cannabis dependence. Study members were grouped according to their number of dependence diagnoses: (a) those who never used cannabis at any study wave and thus could not have become dependent; (b) those who used cannabis at least once at one or more study waves but never diagnosed; © those who diagnosed at one wave; (d) those who diagnosed at two waves; and (e) those who diagnosed at three or more waves.

Cannabis dependence is a substance-use disorder as defined in the Diagnostic and Statistical Manual of the American Psychiatric Association (known as DSM-IV). The purpose of the DSM-IV diagnosis is to predict a patient’s future prognosis, and to identify which patients are most in need of scarce treatment resources. A diagnosis of cannabis dependence generally reflects an individual’s continued use of cannabis despite experiencing significant health, social, and/or legal problems related to cannabis use.

Persistence of regular cannabis use. Because some people use cannabis on a regular basis but never develop problems, we also examined neuropsychological decline as a function of persistent regular cannabis use. This was defined as the total number of study waves out of five at which a study member reported using cannabis four or more days per week (the majority of days in a week). Study members were grouped as those who: (a) never used cannabis; (b) used but never regularly; © used regularly at one wave; (d) used regularly at two waves; and (e) used regularly at three or more waves.

Results were similar for persistent cannabis dependence and persistent regular cannabis use.

How we defined adolescent-onset cannabis use:

We defined adolescent-onset cannabis in two ways: 1) cannabis dependence before age 18 or 2) weekly cannabis use before age 18. Results were similar across both definitions.
How we measured IQ

We assessed intelligence in childhood (ages 7, 9, 11, and 13) and again in adulthood at age 38 using standard tests for the field.
How we measured everyday life cognitive functioning

Study members nominated people "who knew them well." These informants were mailed questionnaires and asked to complete a checklist, including whether the study member had problems with their attention (e.g., “can’t concentrate, mind wanders) and memory (e.g., forgets to do errands, return calls, pay bills) over the past year at age 38.
What additional research is needed?

Our findings suggest that cannabis use before age 18 predicts impaired mental functioning. However, we do not know how much cannabis needs to be consumed and across what ages before impairment occurs. Given that the brain undergoes dynamic changes from the onset of puberty through early adulthood, this developmental period should be the focus of future research on the age(s) at which harm occurs.

Additional research is needed to determine whether cannabis-related IQ decline is reversible. We found that adolescent-onset cannabis users performed worse in adulthood than in childhood even after they had quit or reduced their use for a year or more as adults. This suggests that quitting or reducing use does not fully restore functioning among adolescent-onset cannabis users in this time, but longer-term follow-up is needed.

Findings are limited to a cohort of individuals born in Dunedin, New Zealand in the 1970s. Additional research is needed to determine if similar effects are seen in other countries and in today’s teenagers.

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#2 User is offline   santana Icon

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Posted 03 September 2012 - 03:15 PM

Heavy Drinking Rewires Brain, Increasing Susceptibility to Anxiety Problems

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#3 User is offline   azjetfan Icon

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Posted 03 September 2012 - 09:11 PM

Drugs are bad M'Kay.
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#4 User is offline   HarlemHxC814 Icon

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Posted 03 September 2012 - 09:14 PM

I'm sorry. I don't do that stuff
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