How sugar affects the brain - Nicole Avena

Si ndikon sheqeri ne trurin tone - Nicole Avena

16,787,164 views

2014-01-07 ・ TED-Ed


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How sugar affects the brain - Nicole Avena

Si ndikon sheqeri ne trurin tone - Nicole Avena

16,787,164 views ・ 2014-01-07

TED-Ed


Ju lutemi, klikoni dy herë mbi titrat në anglisht më poshtë për të luajtur videon.

Translator: Aida Musai Reviewer: Helena Bedalli
00:06
Picture warm, gooey cookies,
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Imagjinoni disa biskota te ngrohta e te lengshme,
00:09
crunchy candies, velvety cakes,
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karamele krokante,
keke te mendafshte,
00:12
waffle cones piled high with ice cream.
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kone prej vaferi te tejmbushur me akullore.
00:14
Is your mouth watering?
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A po ju leshon goja leng?
00:16
Are you craving dessert?
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Ju vjen deshira per embelsira?
00:17
Why?
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Pse?
00:18
What happens in the brain that makes sugary foods so hard to resist?
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Cfare ndodh ne trurin tone
qe i ben kaq te parrezistueshme ushqimet e embla?
00:23
Sugar is a general term used to describe a class of molecules
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Fjala sheqer eshte nje term i pergjithshem
qe perdoret per te pershkruar nje categori molekulash
te quajtura karbohidrate,
00:27
called carbohydrates,
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00:28
and it's found in a wide variety of food and drink.
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dhe gjendet ne nje game te gjere ushqimesh dhe pijesh.
00:31
Just check the labels on sweet products you buy.
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Mjafton te kontrolloni etiketat e embelsirave qe blini.
00:34
Glucose, fructose, sucrose,
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Glukosa,
fruktoza,
sukroza,
00:36
maltose, lactose, dextrose, and starch
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maltoza,
laktozi,
dekstroza,
dhe niseshteja
00:39
are all forms of sugar.
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jane te gjitha forma sheqernash.
00:41
So are high-fructose corn syrup,
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Sic jane edhe shurupi i mistrit me nivel te larte fruktoze,
00:43
fruit juice, raw sugar, and honey.
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lengjet e frutave,
sheqeri
apo mjalti.
00:46
And sugar isn't just in candies and desserts,
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Dhe sheqeri nuk gjendet vetem tek karamelet e embelsirat,
00:49
it's also added to tomato sauce,
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ai i shtohet edhe salces se domateve,
00:51
yogurt, dried fruit, flavored waters, or granola bars.
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kosit,
frutave te thata,
ujerave te aromatizuara,
apo shufrave me mysli.
00:55
Since sugar is everywhere, it's important to understand
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Duke qene se sheqeri ndodhet gjithandej,
eshte e rendesishme te kuptojme
00:58
how it affects the brain.
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se c'ndikim ka ai tek truri.
00:59
What happens when sugar hits your tongue?
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Cfare ndodh kur sheqeri prek gjuhen tone?
01:02
And does eating a little bit of sugar make you crave more?
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A eshte e vertete se po te hash pak sheqer
deshiron edhe me shume?
01:05
You take a bite of cereal.
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Kafshon nje shufer grunjerash.
01:07
The sugars it contains activate the sweet-taste receptors,
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Sheqeri qe ajo permban
aktivizon receptoret e shijet
01:10
part of the taste buds on the tongue.
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qe ndodhen ne gjuhe.
01:12
These receptors send a signal up to the brain stem,
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Keta receptore dergojne nje sinjal ne trungun e trurit,
01:15
and from there, it forks off into many areas of the forebrain,
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dhe nga aty, sinjali shperndahet
ne zona te ndryshme te trurit,
01:19
one of which is the cerebral cortex.
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njera prej te cilave eshte korteksi.
01:21
Different sections of the cerebral cortex process different tastes:
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Zona te ndryshme te kortekstit
perpunojne shije te ndryshme:
te hidhuren,
01:26
bitter, salty, umami,
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te kripuren,
umamin,
01:27
and, in our case, sweet.
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dhe ne rastin tone, te emblen.
01:29
From here, the signal activates the brain's reward system.
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Prej ketej sinjali aktivizon
sistemin shperblyes te trurit.
01:33
This reward system is a series of electrical and chemical pathways
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Ky sistem shperblyes perbehet nga nje sere
ngacmimesh elektrike dhe kimike
01:37
across several different regions of the brain.
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te zonave te ndryshme te trurit.
01:39
It's a complicated network,
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Eshte nje rrjet i nderlikuar,
por ai ndihmon ne gjetjen e pergjigjes per te vetmen pyetje te pandergjegjshme:
01:41
but it helps answer a single, subconscious question:
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01:44
should I do that again?
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a duhet te vazhdoj?
01:45
That warm, fuzzy feeling you get when you taste Grandma's chocolate cake?
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Ajo ndjesia e ngrohte, marramendese qe ke
kur provon kekun me cokollate te gjyshes?
01:49
That's your reward system saying,
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Eshte sistemi i shperblimit qe te thote,
01:51
"Mmm, yes!"
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"Hmm, po! "
01:52
And it's not just activated by food.
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Ai nuk aktivizohet vetem nga ushqimi.
01:55
Socializing, sexual behavior, and drugs
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Shoqerizimi,
sjellja seksuale
dhe drogat
01:57
are just a few examples of things and experiences
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jane vetem pak nga shembujt
te gjerave apo pervojave
02:00
that also activate the reward system.
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qe aktivizojne sistemin e shperblimit.
Por kur ky sistem aktivizohet se tepermi
02:03
But overactivating this reward system kickstarts a series of unfortunate events:
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atehere nisin nje sere ngjarjesh te papelqyeshme:
02:08
loss of control, craving, and increased tolerance to sugar.
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humbje kontrolli,
uri,
dhe tolerance e tepruar ndaj sheqernave.
Le te kthehemi tek kafshata jone e grunjerave.
02:13
Let's get back to our bite of cereal.
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Ajo udheton poshte drejt stomakut,
02:15
It travels down into your stomach and eventually into your gut.
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dhe pastaj drejt zorreve.
02:18
And guess what?
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Dhe a e di?
02:19
There are sugar receptors here, too.
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Ketu ndodhen receptore te tjere te sheqernave.
02:22
They are not taste buds, but they do send signals
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Nuk dallojne shijen,
por ama dergojne sinjale
02:24
telling your brain that you're full
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qe i thone trurit tend se je i ngopur
02:26
or that your body should produce more insulin
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apo se trupi duhet te prodhoje me shume insuline
02:28
to deal with the extra sugar you're eating.
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per te perballuar sheqerin e tepert qe ti po ha.
02:31
The major currency of our reward system is dopamine,
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Monedha kryesore
e sistemit tone te shperblimit eshte dopamina,
02:34
an important chemical or neurotransmitter.
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nje neurotransmetues i rendesishem kimik.
02:37
There are many dopamine receptors in the forebrain,
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Ne pjesen e perparme te trurit ka shume receptore dopamine,
02:39
but they're not evenly distributed.
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por ata nuk jane te shperndare njetrajtesisht.
02:41
Certain areas contain dense clusters of receptors,
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Ne disa zona gjenden ishuj te dendur receptoresh,
02:44
and these dopamine hot spots are a part of our reward system.
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dhe keto pika te nxehta
jane pjese e sistemit te shperblimit.
02:48
Drugs like alcohol, nicotine, or heroin
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Drogat si alkooli,
nikotina,
apo heroina
02:51
send dopamine into overdrive,
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e cojne ne qiell nivelin e dopamines,
02:53
leading some people to constantly seek that high,
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gje qe i nxit disa njerez te arrijne gjithnje ate nivel te larte,
02:56
in other words, to be addicted.
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e thene ndryshe, te krijojne varesi.
02:58
Sugar also causes dopamine to be released, though not as violently as drugs.
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Edhe sheqeri nxit prodhimin e dopamines,
por jo ne nivele aq te larta sa drogat.
03:03
And sugar is rare among dopamine-inducing foods.
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Dhe sheqeri eshte nje nga ushqimet e rralla qe nxisin prodhimin e dopamines.
03:06
Broccoli, for example, has no effect,
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Per shembull, brokoli nuk ka asnje efekt,
03:08
which probably explains
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gje qe ndoshta shpjegon se pse
eshte kaq e veshtire t'i bindesh femijet te hane perime.
03:10
why it's so hard to get kids to eat their veggies.
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Teksa flasim per ushqimet e shendetshme,
03:13
Speaking of healthy foods,
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03:14
let's say you're hungry and decide to eat a balanced meal.
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supozojme se ti ke uri
dhe vendos te hash nje vakt te balancuar.
03:17
You do, and dopamine levels spike in the reward system hot spots.
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Ti e ben kete, keshtu dopamina ngacmon
ishujt e ndjeshem te sistemit te shperblimit.
03:21
But if you eat that same dish many days in a row,
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Por nese ti ha po te njejtin ushqim per disa dite rresht,
03:24
dopamine levels will spike less and less, eventually leveling out.
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niveli i dopamines do te ulet gjithnje e me shume,
derisa te arrije ne zero.
03:28
That's because when it comes to food,
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Kjo ndodh sepse, kur flitet per ushqime,
03:30
the brain evolved to pay special attention to new or different tastes.
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gjate evolucionit truri u mesua t'i kushtonte vemendje te vecante
shijeve te reja ose te ndryshme.
03:34
Why?
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Pse?
Ka dy arsye:
03:36
Two reasons:
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03:37
first, to detect food that's gone bad.
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e para, per te kuptuar nese ushqimi ishte apo jo i prishur.
03:39
And second, because the more variety we have in our diet,
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e dyta, sepse sa me shume varietet
te kemi ne dieten tone,
03:42
the more likely we are to get all the nutrients we need.
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aq me e lehte do te jete
qe te marrim gjithe lendet qe na duhen.
03:45
To keep that variety up,
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Ne menyre qe t'a mbajme te gjalle kete varietet,
03:47
we need to be able to recognize a new food,
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duhet te jemi ne gjendje te dallojme nje ushqim te ri,
03:49
and more importantly, we need to want to keep eating new foods.
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dhe c'ka eshte me e rendesishme,
duhet te kemi gjithnje deshiren per te ngrene ushqime te reja.
03:53
And that's why the dopamine levels off when a food becomes boring.
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Ja pse niveli i dopamines bie
kur ushqimi behet i merzitshem.
03:57
Now, back to that meal.
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Tani le te kthehemi tek vakti jone.
03:58
What happens if in place of the healthy, balanced dish,
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Cfare ndodh nese ne vend
te atij vakti te shendetshem e te balancuar,
04:02
you eat sugar-rich food instead?
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ti vendos te hash ushqime me permbajtje te larte sheqeri?
04:04
If you rarely eat sugar or don't eat much at a time,
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Nese e ha rralle sheqerin
ose nuk ha shume prej tij pernjeheresh,
04:07
the effect is similar to that of the balanced meal.
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efekti do te jete i njejte me ate te nje vakti te balancuar.
04:09
But if you eat too much, the dopamine response does not level out.
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Nese ha shume,
atehere niveli i dopamines nuk do te bjere.
04:13
In other words, eating lots of sugar will continue to feel rewarding.
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E thene ndryshe, nese ha shume sheqerna
do te ndihesh gjithnje i shperblyer.
04:17
In this way, sugar behaves a little bit like a drug.
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Ne kete drejtim, sheqeri sillet paksa si drogat.
04:21
It's one reason people seem to be hooked on sugary foods.
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Kjo eshte nje prej arsyeve perse njerezit krijojne varesi
ndaj ushqimeve te embla.
04:24
So, think back to all those different kinds of sugar.
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Tani, kujtoni te gjitha llojet e ndryshme te sheqerit.
04:27
Each one is unique, but every time any sugar is consumed,
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Secili prej tyre eshte unik,
por sa here qe njeri prej tyre hyn ne sistemin tone,
04:30
it kickstarts a domino effect in the brain that sparks a rewarding feeling.
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ai nxit nje efekt domino ne trurin tone
qe prodhon nje ndjesi shperblimi.
04:35
Too much, too often, and things can go into overdrive.
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Eshte e forte, dhe ndodh shpesh,
prandaj ndodh edhe qe te kalohet limiti.
04:38
So, yes, overconsumption of sugar can have addictive effects on the brain,
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Pra, konsumi i tepert i sheqernave,
mund te krijoje varesi te trurit,
04:42
but a wedge of cake once in a while won't hurt you.
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por nje copez kek nje here ne kaq nuk do t'ju sjelle asnje te keqe.
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