How do carbohydrates impact your health? - Richard J. Wood

6,316,545 views ・ 2016-01-11

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Mile Živković Lektor: Milenka Okuka
00:06
Which of these has the least carbohydrates?
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Šta od ovoga ima najmanje ugljenih hidrata?
00:09
This roll of bread?
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Ovo parče hleba?
00:10
This bowl of rice?
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Ova činija pirinča?
00:12
Or this can of soda?
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Ili ova limenka gaziranog pića?
00:14
It's a trick question.
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To je trik pitanje.
00:15
Although they may differ in fats, vitamins, and other nutritional content,
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Iako se razlikuju u mastima, vitaminima i drugim nutrijentima,
00:19
when it comes to carbs, they're pretty much the same.
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kada su u pitanju ugljeni hidrati, skoro pa su jednaki.
00:23
So what exactly does that mean for your diet?
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Šta to onda znači za vašu ishranu?
00:26
First of all, carbohydrate is the nutritional category for sugars
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Pre svega, ugljeni hidrati su nutritivna kategorija za šećere
00:30
and molecules that your body breaks down to make sugars.
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i molekule koje vaše telo razbija da dobije šećere.
00:34
Carbohydrates can be simple or complex depending on their structure.
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Ugljeni hidrati po strukturi mogu biti prosti ili složeni.
00:38
This is a simple sugar, or monosaccharide.
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Ovo je prost šećer ili monosaharid.
00:42
Glucose, fructose, and galactose are all simple sugars.
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Glukoza, fruktoza i galaktoza su sve prosti šećeri.
00:46
Link two of them together, and you've got a disaccharide,
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Povežite dva od njih i dobijate disaharid,
00:50
lactose, maltose, or sucrose.
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laktozu, maltozu ili sukrozu.
00:55
Complex carbohydrates, on the other hand,
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Složeni ugljeni hidrati, sa druge strane,
00:57
have three or more simple sugars strung together.
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imaju tri ili više prostih šećera koji su međusobno povezani.
01:00
Complex carbohydrates with three to ten linked sugars
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Složeni ugljeni hidrati sa tri do deset povezanih šećera
01:04
are oligosaccharides.
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su oligosaharidi.
01:06
Those with more than ten are polysaccharides.
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Oni sa više od deset su polisaharidi.
01:09
During digestion,
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Tokom varenja,
01:10
your body breaks down those complex carbohydrates
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vaše telo razbija te složene ugljene hidrate
01:14
into their monosaccharide building blocks,
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u gradivne materijale - monosaharide,
01:16
which your cells can use for energy.
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koje vaše ćelije mogu da koriste za energiju.
01:19
So when you eat any carbohydrate-rich food,
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Kada jedete hranu koja je bogata ugljenim hidratima,
01:22
the sugar level in your blood, normally about a teaspoon, goes up.
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nivo šećera u vašoj krvi se penje, a obično je oko jedne kašičice.
01:27
But your digestive tract doesn't respond to all carbohydrates the same.
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Ali vaš probavni trakt ne odgovara isto na sve ugljene hidrate.
01:31
Consider starch and fiber,
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Uzmite u obzir skrob i vlakna,
01:33
both polysaccharides,
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polisaharide,
01:35
both derived from plants,
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dobijaju se iz biljaka
01:36
both composed of hundreds to thousands of monosaccharides joined together,
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i sastoje se iz stotina do hiljada spojenih monosaharida,
01:42
but they're joined together differently,
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ali spojeni su drugačije,
01:44
and that changes the effect they have on your body.
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i to menja efekat koji imaju na vaše telo.
01:47
In starches, which plants mostly store for energy in roots and seeds,
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Kod skroba, koga biljke skladište uglavnom zbog energije, u korenu i semenu,
01:51
glucose molecules are joined together by alpha linkages,
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molekuli glukoze spojeni su kroz alfa veze,
01:55
most of which can be easily cleaved by enzymes in your digestive tract.
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većinu kojih enzimi u vašem probavnom traktu mogu lakoda razbiju
02:00
But in fiber, the bonds between monosaccharide molecules are beta bonds,
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Ali kod vlakana, veze između molekula monosaharida su beta veze,
02:05
which your body can't break down.
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koje vaše telo ne može da razbije.
02:07
Fiber can also trap some starches, preventing them from being cleaved,
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Vlakna takođe mogu zarobiti nešto skroba, sprečavajući da se razbije,
02:12
resulting in something called resistant starch.
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što za posledicu ima nešto što se zove otpornim skrobom.
02:15
So foods high in starch, like crackers and white bread,
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Namirnice sa dosta skroba, poput krekera i belog hleba,
02:19
are digested easily,
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lako se vare,
02:21
quickly releasing a whole bunch of glucose into your blood,
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brzo ispuštaju hrpu glukoze u vaš krvotok,
02:24
exactly what would happen if you drank something high in glucose, like soda.
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kao što bi se desilo, ako biste popili nešto sa dosta glukoze, kao gazirani sok.
02:28
These foods have a high glycemic index,
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Ove namirnice imaju visok glikemijski indeks,
02:31
the amount that a particular food raises the sugar level in your blood.
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što je količina šećera u krvi koju podiže neka određena namirnica.
02:36
Soda and white bread have a similar glycemic index
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Gazirani sokovi i beli hleb imaju sličan glikemijski indeks
02:39
because they have a similar effect on your blood sugar.
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jer imaju sličan efekat na šećer u krvi.
02:42
But when you eat foods high in fiber, like vegetables, fruits, and whole grains,
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Ali kada jedete hranu sa dosta vlakana, poput povrća, voća i integralnih žitarica,
02:47
those indigestible beta bonds slow the release of glucose into the blood.
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te nesvarive beta veze usporavaju ispuštanje glukoze u krv.
02:52
Those foods have a lower glycemic index,
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Ove namirnice imaju niži glikemijski indeks,
02:54
and foods like eggs, cheese, and meats have the lowest glycemic index.
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i namirnice poput jaja, sira i mesa imaju najniži glikemijski indeks.
03:00
When sugar moves from the digestive tract to the blood stream,
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Kada šećer kreće od probavnog trakta u krvotok,
03:04
your body kicks into action to transfer it into your tissues
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vaše telo kreće u akciju da ga prebaci u vaša tkiva
03:08
where it can be processed and used for energy.
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gde se može obraditi i iskoristiti za energiju.
03:10
Insulin, a hormone synthesized in the pancreas,
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Insulin, hormon koji se stvara u pankreasu,
03:14
is one of the body's main tools for sugar management.
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jedan je od glavnih telesnih mehanizama za upravljanje šećerom.
03:17
When you eat and your blood sugar rises,
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Kada jedete i vaš šećer u krvi raste,
03:20
insulin is secreted into the blood.
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insulin se luči u krv.
03:23
It prompts your muscle and fat cells to let glucose in
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On nalaže vašim ćelijama u mišićima i mastima da prihvate glukozu
03:26
and jump starts the conversion of sugar to energy.
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i pokreće pretvaranje šećera u energiju.
03:30
The degree to which a unit of insulin lowers the blood sugar
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Stepen do kog jedinica insulina snižava šećer u krvi,
03:33
helps us understand something called insulin sensitivity.
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pomaže nam da razumemo nešto što se naziva osetljivošću na insulin.
03:37
The more a given unit of insulin lowers blood sugar,
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Što više neka jedinica insulina smanjuje šećer u krvi,
03:40
the more sensitive you are to insulin.
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to ste osetljiviji na insulin.
03:43
If insulin sensitivity goes down, that's known as insulin resistance.
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Ukoliko se smanji osetljivost na insulin, to se naziva otpornošću na insulin.
03:47
The pancreas still sends out insulin,
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Pankreas još uvek šalje insulin,
03:49
but cells, especially muscle cells, are less and less responsive to it,
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ali ćelije, naročito one u mišićima, sve manje odgovaraju na njega,
03:54
so blood sugar fails to decrease,
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tako da se šećer u krvi ne smanjuje
03:57
and blood insulin continues to rise.
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i insulin u krvi raste.
04:00
Chronically consuming a lot of carbohydrates
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Hronična konzumacija velike količine ugljenih hidrata
04:03
may lead to insulin resistance,
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može dovesti do otpornosti na insulin
04:06
and many scientists believe that insulin resistance
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i mnogi naučnici veruju da otpornost na insulin
04:09
leads to a serious condition called metabolic syndrome.
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dovodi do ozbiljne bolesti zvane metabolički sindrom.
04:13
That involves a constellation of symptoms,
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Ona uključuje niz simptoma,
04:15
including high blood sugar,
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uključujući visok šećer u krvi,
04:17
increased waist circumference,
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povećan obim struka
04:19
and high blood pressure.
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i visok krvni pritisak.
04:21
It increases the risk of developing conditions,
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Ona povećava rizik od dobijanja raznih bolesti,
04:23
like cardiovascular disease
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poput kardiovaskularnih bolesti
04:25
and type II diabetes.
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i dijabetesa tipa 2.
04:27
And its prevalence is rapidly increasing all over the world.
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Ova bolest brzo se širi svetom.
04:31
As much as 32% of the population in the U.S. has metabolic syndrome.
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Skoro 32% stanovništva SAD ima metabolički sindrom.
04:38
So let's get back to your diet.
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Vratimo se vašoj ishrani.
04:40
Whether your food tastes sweet or not, sugar is sugar,
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Bez obzira da li je vaša hrana slatka, šećer je šećer
04:44
and too many carbs can be a problem.
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i previše ugljenih hidrata može biti problem.
04:47
So maybe you'll want to take a pass
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Možda ćete ipak propustiti
04:49
on that pasta sushi roll pita burrito donut burger sandwich.
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taj suši-pita-burito-krofna-burger sendvič od testenine.
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