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http://www.nlm.nih.gov/medlineplus/news ... 30907.html
Quote:
Marijuana again tied to memory, learning problems
Reuters Health
Monday, March 13, 2006
By Amy Norton
NEW YORK (Reuters Health) - People who regularly smoke marijuana may find their memories growing hazy over time, a study published Monday suggests.
In a study of long-term and shorter-term marijuana users, researchers in Greece found that both groups performed more poorly on tests of memory, attention and other cognitive abilities than a comparison group who'd only occasionally used the drug.
Long-term users - who'd smoked four or more joints per week for at least 10 years - showed the greatest deficits.
The findings, published in the journal Neurology, add to the conflicting body of research on the effects of marijuana on the brain. While many studies have suggested that long-time pot smoking dulls memory, attention span and mental acuity, some have found no large differences in these skills between marijuana users and non-users.
One recent analysis of 15 studies found only minor effects on memory among long-time pot users, and no clear effect on attention, language, reasoning and a number of other cognitive functions.
One problem is that it's difficult for studies such as the current one to establish a definite cause-and-effect relationship between marijuana and intellectual deficits, Dr. Lambros Messinis, the study's lead author, told Reuters Health.
Though the researchers accounted for a number of variables -- like education, use of other drugs and the presence of clinical depression -- it's tough to control for all the factors that could make heavy marijuana users different from other people, according to Messinis.
Still, he and his colleagues say, their findings are in line with certain past studies linking heavy, long-term pot smoking to "subtle" deficits in intellectual abilities.
The study included 40 marijuana users ages 17 to 49 who were in a drug abuse treatment program; all had used the drug frequently for at least five years, but half -- those considered long-term users -- had smoked for 10 years or more. They were compared with 24 adults the same age who had used pot no more than 20 times in their lives.
Overall, both long- and shorter-term marijuana users performed more poorly on tests of memory, attention and mental-processing speed. The proportion of study participants deemed "impaired," according to the researchers, was highest in the long-term group and lowest in the comparison group.
Long-time pot users showed the greatest problems on tests where they were asked to learn and remember a series of words. They were "significantly" below the published norms for these tests, according to Messinis and his colleagues.
It's not yet clear whether the intellectual deficits linked to marijuana are lasting, Messinis said, but research "generally supports" the notion that these problems are reversible after longer periods of abstinence. People in his study were required to have been abstinent only for the 24 hours before taking the tests.
Another unknown, according to Messinis, is whether marijuana use at a young age may affect the brain differently than use during adulthood. Knowledge in this area, he said, is still "poor."
SOURCE: Neurology, March 14, 2006.
Πείτε καλά καλά στούντιο τατού στην Αθήνα.
Mέδουσα..μην το ψάχνεις παραπάνω.. :wink:Quote:
Originally Posted by Mostos
http://www.medusatattoo.gr
Γιατί δεν αναφέρει όμως το studio της Αθήνας μέσα?Έχει κλείσει?Κοντά στα εξάρχεια ήταν..
kalhmeres ppl.
petyxa ton dead irc..
Dead is twuser@pc175.ore.theweb.gr * Happy User @ The Web
pwned :P
ebro ton steilane kai syxthrizei :P
Αυτό που είπε. Πριν λίγους μήνες που είχα περάσει ανοιχτό ήτανQuote:
Originally Posted by DENIZ
χμμμ καλύτερο απο τζίμη κλπ? και γενικά απο ποια άποψη καλύτερο; βασικό είναι και να παρέχει ασφάλεια ε.
Γιε, και ασφαλείς και πολύ προσεκτικοί σε θέματα καθαριότητας και πολύ καλή δουλειά κάνουν σε σχέδια κλπ.
κβελντ έχεις τατού? :shock:
ebro?omg
ypomonh :|
mia xara einai o evros.Quote:
Originally Posted by Bullet
Imoun fantaros ekei kai an 1097 xlm makria mia xara perasa sto strato.
Ta xeirotera leme 8) :D
@Mostos: Γιεπ
ουάου. :shock:
χρήστης MoRmEnGiL λέει:
ekane reboot to pisi mono tou
Ο χρήστης MoRmEnGiL λέει:
......
Ο χρήστης MoRmEnGiL λέει:
exei epanastathsei enantia sta afentika
Ο χρήστης Michail λέει:
ωωωωωωωωωωω
Ο χρήστης Michail λέει:
θανατος
Ο χρήστης MoRmEnGiL λέει:
se lgo 8a mou pei oti syndikallizete me tou aderfou mou k ths manas mou
Ο χρήστης Michail λέει:
στην πυρα
ton adh.
"...Κι όμως το πιο γλυκό βιολί
το παίζει ο θάνατος."
όχι, ο charlie daniels το παίζει.
mel + kremes aravositou giwths sokolata = L.F.E.
The newest registered user is AfterBeatlesOnlyChaos
Ναι και το πρώτο του πόστ είναι για το μπλακμέταλ.
Φέηκ.
[mumble] klmer... [/mumble]
στα διαλα κι εχω αρακαQuote:
Originally Posted by MeLinDa
xairetismata apo tin ekswtikh sparti
Μας κουρέφσανε όλες από τη δουλειά. Πάει το (κάπως) μεταλλικό μαλλί. Πάει το χεντμπάκι!!
Αρνακι στο φουρνο με πατατουλες RULEZZZZ
Cesar's από Dominos. Σλουρπ!
8a kanete kai parelash?Quote:
Originally Posted by Kuolema
h piasate psyrres?
Και ψείρες πιάσαμε κι απ' όλα!!!!!!!!!!!!!!!!!!!!!!!
Γιατί θέλουν όλοι κυριακάτικα να μπουν ιντερνετ ντε και καλά?
mallon giati den exoun tipota kalitero na kanoun
Naah η σωστή απάντηση είναι "για να σπάνε τα παπάρια του support της Vivodi".
Ούτε εγώ εχω αλλά δεν κανω έτσι =ρ
EDIT: Έχει πιάσει βροχή αλήθεια?
καιρός ήτανεQuote:
Originally Posted by Kuolema
πόσταρε καμια πικ (δεν εννοείς εντελώς κοντό ε; :/ )
Kalhmera.
Na ta 100sthseis Pano. An kai plhsiazeis.
Quote:
Originally Posted by Magellan
έχεις κανα πρόβλημα με τη Σπάρτη φίλος; :dyell:Quote:
Originally Posted by Magellan
θένκς man :)Quote:
Originally Posted by Neronas
έχω λίγο ακόμα ως τη κατοστάρα :P
Χρόνια πολλά κύριε Σάικοτρον. Θα τα πούμε και από κοντά την Τεταρτη για ξεφαντωμα με καυτό χεβιμεταλ.
υπάρχει κανας άλλος που πίνει το καφέ του/της με μέλι?
Μου έλεγαν πριν λίγες μέρες ότι είναι γαμάτος (ο ελληνικός με μέλι) και θα τον δοκιμάσω.Quote:
Originally Posted by Milton
