Puas cannabis yeej txo koj cov IQ?

Does cannabis really lower your IQ?

Kuv tsis ntev los no kev tshawb fawb tau qhia tias sib txawv lwm tshaj cannabis siv tej zaum yuav ua rau ntau-tham tu ncua nyob rau hauv kev txawj ntse muaj nuj nqi


Powered by Guardian.co.ukQhov tsab xov xwm hu ua “Puas cannabis yeej txo koj cov IQ?” raug sau los ntawm Claire Mokrysz, rau theguardian.com rau hnub Thursday 14th Lub ib hlis ntuj 2016 15.24 UTC

Seb puas los yog tsis siv cannabis yuav ua tau kom peev xwm puas yog ib tug kub lub ntsiab lus ntawm kev tshawb fawb thiab pej xeem nyiam. muab lub uas nws kim heev xov xwm xim tso cai rau kev tshawb pom uas hais dejnum los ntawm cannabis rau cognition, lub hlwb muaj nuj nqi thiab puas siab puas ntsws, koj yuav tsum tau kev zam txim rau xav haus luam yeeb ib tug spliff twb akin mus dua bashing koj tus kheej tshaj lub taub hau nrog rau ib tug loj heev bong. Txawm li cas los, txij li thaum ntau ntau lub chaw ua hauj lwm rau hnub tim yog tus ntoo khaub lig-sectional (uas yog, ntsuam yog npaum li cas tsuas yog nyob rau ib lub sij hawm nyob rau hauv ib tug neeg lub neej), peb yuav tsis paub hais cannabis cov neeg siv yuav tau ua tej txawv ua ntej lawv pib siv cannabis. Nyob rau hauv luv luv, peb nyob nraum ntsib nrog ib tug classic "nqaij qaib los yog lub qe" teeb meem.

Cannabis siv tsis tshwm sim nyob rau hauv ib tug lub tshuab nqus tsev. Thiab cov hluas uas pib siv cannabis los ntawm ib tug hluas hnub nyoog yuav luag yeej txawv los ntawm cov neeg uas yuav tsis sim, nws los yog leej twg ncua kom txog thaum lawv cov laus. Lub pov thawj qhia tias cov neeg uas pib siv cannabis los ntawm ib tug hluas hnub nyoog feem ntau muaj tsawg ruaj khov haiv thiab ntau tus xeeb ceem dua lawv cov uas tsis yog-siv cov phooj ywg. Teenage cannabis siv kuj feem ntau mus tes hauv tes nrog lwm yam yeeb tshuaj siv thiab pheej hmoo ua txoj kev ua neej xaiv nyob rau hauv general. Lub poorer peev xwm ua tau zoo ntawm cannabis cov neeg siv tej zaum yuav yog li ntawd ua los ntawm lwm yam tseem ceeb txuam nrog cannabis siv, es cannabis siv nws tus kheej. Txawm li cas los nws yog ib ntawm cov hoob kawm nyuaj heev los tswj rau tag nrho cov lwm yam.

Mus sim los tsoo cov teeb meem, nrog rau lwm yam kev soj ntsuam los ntawm University College London thiab University of Bristol (xws li Suzi Gage uas hosts no blog), Kuv tau muab kev koom tes nyob rau hauv ib tug tshiab txoj kev tshawv no, nrog feem ceeb uas nrhiav tau. Siv cov ntaub ntawv nyob rau hauv 2235 hluas sau raws li ib feem ntawm lub "Cov me nyuam ntawm cov 90 lub" pab peeb zeej tuaj los ntawm South West hais, peb ntsia lub kev sib raug zoo ntawm yuav ua li cas muaj ntau zaus ib tug neeg qhia muaj siv cannabis los ntawm cov muaj hnub nyoog ntawm 15, thiab lawv cov kev kawm rau ib tug IQ xeem tiav nyob rau tib lub hnub nyoog. Ceeb lub hluas kuj tau coj ib tug IQ xeem thaum lawv 8 xyoo (ua ntej ib yam ntawm lawv tau siv cannabis), li ntawd, peb yuav tackle qhov "nqaij qaib los yog lub qe" teeb meem.

Thaum xub thawj saib peb tau pom tias cov neeg hluas uas tau siv cannabis ua zuj zus rau lawv tub hluas ntxhais hluas IQ kev ntsuam xyuas, tom qab ris rau lawv 'lub hauv paus' IQ ntawm 8 xyoo. Txawm tias cov neeg uas tau tsuas yog siv Cannabis ib tug puv tes ntawm lub sij hawm muab qhab nias roughly 2 IQ cov ntsiab lus tsawg tshaj cov neeg uas yeej tsis tau sim cannabis. Txawm li cas los, peb kuj muab sau tseg tias cov hluas uas tau siv cannabis twb ntau npaum li cas yuav muaj siv luam yeeb, haus dej cawv thiab lwm yam tsis raws cai tshuaj- thiab tag nrho cov yam tseem ceeb kuj kwv yees qis tub hluas ntxhais hluas IQ qhab nees. Feem ntau cov strikingly peb pom hais tias Cannabis neeg siv kuj ntau npaum li cas yuav tsum haus luam yeeb luam yeeb haus luam yeeb- 84% ntawm cov neeg nyob rau hauv peb heaviest cannabis siv pab pawg neeg (uas qhia muaj siv cannabis tsawg kawg yog 50 lub sij hawm los ntawm lub hnub nyoog 15) tau haus luam yeeb ntau tshaj 20 lub sij hawm nyob rau hauv lawv lub neej, piv rau xwb 5% ntawm cov neeg uas tsis tau siv cannabis.

Thaum peb cov lus tom rau cov kev txawv no nyob rau hauv cov nqi ntawm cov lwm yam khoom siv, nrog rau lwm yam xws li thaum yau tus xeeb ceem thiab kev puas hlwb kev noj qab nyob cov tsos mob, cannabis siv tsis kwv yees qis IQ qhab nees. Tom qab no hloov txawm peb heaviest pab pawg neeg ntawm cannabis cov neeg siv tau kwv yees IQ qhab nees tsis sib txawv rau cov neeg uas yeej tsis tau sim cannabis. Peb kuj khiav ib tug zoo li tsom xam saib nyob rau tib lub tub hluas lub tsev kawm ntawv GCSE qib, uas lawv zaum ntawm lub hnub nyoog 15/16. Qhov nws tshawb pom tau zoo sib xws rau peb IQ tshawb pom- thaum cannabis neeg siv tiav qis qib ntawm GCSE (qhov sib npaug ntawm 2 qib qis rau ib yam kev kawm), ib zaug peb coj account ntawm cov lwm yam yam tseem ceeb cannabis siv tsis kwv yees zuj zus lub tsev kawm ntawv kev ua tau zoo.

Nws nkawd yog li ntawd hais tias muaj yog ib yam dab tsi lwm tus txog tej no ob pawg ntawm cov hluas (cov neeg uas tau siv cannabis los ntawm lub hnub nyoog 15 thiab cov neeg uas muaj tsis) uas yog lub luag hauj lwm rau qhov sib txawv nyob rau hauv IQ thiab lub tsev kawm ntawv qib, es lawv cannabis siv, tab sis yog nws 's tsis luaj li cas ntawm peb txoj kev kawm. Txawm tias luam yeeb haus luam yeeb yog tus uas pom raws li ib tug muaj feem tseem ceeb, peb kom meej meej tsis tau paub los ntawm no hom ntawm txoj kev tshawb seb nws ua tau ua rau sab IQ thiab tsev kawm ntawv kev ua tau zoo, thiab muaj me ntsis pov thawj rau lwm qhov chaw kom muab qhov no yog cov ntaub ntawv.

Thaum no tej zaum lub suab zoo li zoo xov xwm rau cov neeg 15% ntawm 15-24 xyoo Europeans uas tau siv cannabis nyob rau hauv lub xyoo dhau los, qhov tau nqa los tsev lus yog sadly tsis yog li ntawd ntshiab txiav. Qhov no yog cia li ib txoj kev tshawb los ntawm ib tug peeb zeej tuaj nyob rau hauv ib cheeb tsam ntawm ces, thiab raws li tus sau phau ntawv ntawm daim ntawv peb yog cov xub thawj lees paub rau cov kev txwv ntawm no ua hauj lwm, nrog rau cov hluas muaj hnub nyoog ntawm cov neeg koom thaum peb ntsuas IQ, thiab cov kuj mob loj tsawv theem ntawm cannabis siv.

A zoo-tawm txoj kev tshawb no ntawm 2012 tswv yim hais tias cannabis siv pib nyob rau hauv thaum tiav hluas thiab persisting rau hauv nruab nrab-lub neej "yog" txog IQ poob. Yog li ntawd yuav ua li cas ua cov uas tau tawm tsam tshawb pom haum ua ke? Qhov uas sib txawv ntawm lub 2012 txoj kev tshawb no thiab peb lub yog lub hom cannabis cov neeg siv nyob rau hauv txoj kev tshawb no. Peb heaviest siv cov hluas tau siv cannabis rau kwv yees li ntawm 2 xyoo, thiab tau siv cannabis tsawg kawg yog 50 lub sij hawm txhua (txawm hais tias 57% ntawm no pab pawg neeg qhia muaj siv cannabis tsawg kawg yog 100 lub sij hawm). Nyob rau hauv lub 2012 kawm cov neeg uas pom qhov feem ntau txaus ntshai IQ poob lawm pheej cannabis cov neeg siv los ntawm tiav hluas mus txog rau thaum lawv lig 30 lub, thiab muaj mob cannabis yees hauv ntau cov ntsiab lus nyob rau hauv lawv lub neej. Yog li ntawd nws yog tau hais tias cannabis yees, es cannabis siv per se, muaj feem xyuam rau txo IQ, los yog tias pheej hnyav cannabis siv thoob plaws koj lub neej tau muaj cov tsis zoo los.

Peb txoj kev tshawb no yog los ntawm tsis muaj txhais tau tias tseem, tab sis nws ntsiab hais tias peb yuav tsum rau tag nrho cov muaj ntau ceev faj thaum dhia mus xaus hais txog tus harms ntawm ib tug yeeb tshuaj ua ntej peb muaj muaj zog pov thawj yog txoj kev. Overly co lus hnyav kawg cov lus xaus hais txog lub peev xwm tsis zoo los ntawm cannabis yog unscientific thiab raws li ib tug tsis tiav pov thawj puag. Qhov no yuav ua tau kom lub tsis ncaj ncees marginalization ntawm cov hluas uas siv cannabis, uas yog qhov kawg tshaj plaws peb yuav xav, muab hais tias qhov no pab pawg neeg yog yuav muaj xws li ib co ntawm cov feem ntau yooj yim nyob rau hauv haiv neeg.

Claire Mokrysz yog ib tug PhD menyuam kawm ntawv nyob University College London soj seb cov hluas yog tshwj xeeb yog raug ua phem rau los ntawm cannabis thiab haus cawv.

guardian.co.uk © Tus Saib Xyuas Xov xwm & Media Limited 2010