full transcript
From the Ted Talk by Richard J. Wood: How do carbohydrates impact your health?
Unscramble the Blue Letters
Which of these has the least carbohydrates? This roll of bread? This bowl of rice? Or this can of soda? It's a tirck question. Although they may differ in fats, vitamins, and other nutritional ctenont, when it comes to cbras, they're pretty much the same. So what exactly does that mean for your diet? First of all, carbohydrate is the nutritional category for sugars and molecules that your body breaks down to make sugars. Carbohydrates can be spmile or complex depending on their structure. This is a simple sugar, or monosaccharide. Glucose, fructose, and galactose are all simple sugars. Link two of them together, and you've got a disaccharide, lsoacte, maoltse, or sucrose. Complex carbohydrates, on the other hand, have three or more simple saurgs strung together. Complex carbohydrates with three to ten linked sugars are oligosaccharides. Those with more than ten are polysaccharides. During digestion, your body bkreas down those complex carbohydrates into their monosaccharide blidnuig blocks, which your cells can use for energy. So when you eat any carbohydrate-rich food, the sugar level in your blood, normally about a teaspoon, goes up. But your digestive tract doesn't respond to all carbohydrates the same. Consider starch and fiber, both polysaccharides, both derived from plants, both coposmed of hundreds to tauodsnhs of monosaccharides joined together, but they're joined together differently, and that changes the efceft they have on your body. In starches, which plants mostly store for energy in roots and seeds, glucose molecules are joined together by aphla liknages, most of which can be easily cleaved by enzymes in your digestive tract. But in fiber, the bdons between monosaccharide molecules are beta bonds, which your body can't baerk down. fbeir can also trap some sathercs, pnnivteerg them from being cleaved, resulting in something cllaed resistant stacrh. So foods high in starch, like crackers and white bread, are dgeetisd easily, quickly releasing a whole bunch of glucose into your blood, exactly what would happen if you drank something high in glucose, like soda. These foods have a high glycemic index, the amount that a particular food raises the sugar level in your blood. Soda and white bread have a siamilr glycemic index because they have a similar effect on your bolod sugar. But when you eat foods high in fiber, like vegetables, futris, and whole grains, those isidgletbine beta bonds slow the release of glucose into the blood. Those fodos have a lower glycemic index, and foods like eggs, cheese, and meats have the lowest glycemic index. When sugar mvoes from the dgitiseve tract to the blood stream, your body kckis into atocin to transfer it into your tissues where it can be pcrsseoed and used for energy. Insulin, a hormone synthesized in the pancreas, is one of the body's main tools for sugar management. When you eat and your blood sugar rises, insulin is secreted into the blood. It prompts your muscle and fat clles to let glucose in and jump starts the conversion of sugar to energy. The degree to which a unit of insulin lowers the blood sugar helps us ursnenatdd something called insulin stsvniieity. The more a given unit of insulin lowers blood sugar, the more sensitive you are to insulin. If insulin sensitivity goes down, that's known as insulin resistance. The pancreas still sends out insulin, but cells, especially muscle cells, are less and less responsive to it, so blood sugar fails to decrease, and blood insulin continues to rise. Chronically consuming a lot of carbohydrates may lead to insulin rseasntcie, and many scientists believe that islinun resistance leads to a serious condition called metabolic syndrome. That involves a constellation of symptoms, including high blood sgaur, increased waist creincerfcume, and high blood pusrrsee. It increases the risk of developing conditions, like cuocaadaivrlsr disease and type II diabetes. And its prevalence is rapidly isrieancng all over the world. As much as 32% of the population in the U.S. has metabolic syndrome. So let's get back to your diet. Whether your food tastes sweet or not, sugar is sugar, and too many carbs can be a problem. So maybe you'll want to take a pass on that pasta sushi roll pita burrito donut burger sdwnacih.
Open Cloze
Which of these has the least carbohydrates? This roll of bread? This bowl of rice? Or this can of soda? It's a _____ question. Although they may differ in fats, vitamins, and other nutritional _______, when it comes to _____, they're pretty much the same. So what exactly does that mean for your diet? First of all, carbohydrate is the nutritional category for sugars and molecules that your body breaks down to make sugars. Carbohydrates can be ______ or complex depending on their structure. This is a simple sugar, or monosaccharide. Glucose, fructose, and galactose are all simple sugars. Link two of them together, and you've got a disaccharide, _______, _______, or sucrose. Complex carbohydrates, on the other hand, have three or more simple ______ strung together. Complex carbohydrates with three to ten linked sugars are oligosaccharides. Those with more than ten are polysaccharides. During digestion, your body ______ down those complex carbohydrates into their monosaccharide ________ blocks, which your cells can use for energy. So when you eat any carbohydrate-rich food, the sugar level in your blood, normally about a teaspoon, goes up. But your digestive tract doesn't respond to all carbohydrates the same. Consider starch and fiber, both polysaccharides, both derived from plants, both ________ of hundreds to _________ of monosaccharides joined together, but they're joined together differently, and that changes the ______ they have on your body. In starches, which plants mostly store for energy in roots and seeds, glucose molecules are joined together by _____ ________, most of which can be easily cleaved by enzymes in your digestive tract. But in fiber, the _____ between monosaccharide molecules are beta bonds, which your body can't _____ down. _____ can also trap some ________, __________ them from being cleaved, resulting in something ______ resistant ______. So foods high in starch, like crackers and white bread, are ________ easily, quickly releasing a whole bunch of glucose into your blood, exactly what would happen if you drank something high in glucose, like soda. These foods have a high glycemic index, the amount that a particular food raises the sugar level in your blood. Soda and white bread have a _______ glycemic index because they have a similar effect on your _____ sugar. But when you eat foods high in fiber, like vegetables, ______, and whole grains, those ____________ beta bonds slow the release of glucose into the blood. Those _____ have a lower glycemic index, and foods like eggs, cheese, and meats have the lowest glycemic index. When sugar _____ from the _________ tract to the blood stream, your body _____ into ______ to transfer it into your tissues where it can be _________ and used for energy. Insulin, a hormone synthesized in the pancreas, is one of the body's main tools for sugar management. When you eat and your blood sugar rises, insulin is secreted into the blood. It prompts your muscle and fat _____ to let glucose in and jump starts the conversion of sugar to energy. The degree to which a unit of insulin lowers the blood sugar helps us __________ something called insulin ___________. The more a given unit of insulin lowers blood sugar, the more sensitive you are to insulin. If insulin sensitivity goes down, that's known as insulin resistance. The pancreas still sends out insulin, but cells, especially muscle cells, are less and less responsive to it, so blood sugar fails to decrease, and blood insulin continues to rise. Chronically consuming a lot of carbohydrates may lead to insulin __________, and many scientists believe that _______ resistance leads to a serious condition called metabolic syndrome. That involves a constellation of symptoms, including high blood _____, increased waist _____________, and high blood ________. It increases the risk of developing conditions, like ______________ disease and type II diabetes. And its prevalence is rapidly __________ all over the world. As much as 32% of the population in the U.S. has metabolic syndrome. So let's get back to your diet. Whether your food tastes sweet or not, sugar is sugar, and too many carbs can be a problem. So maybe you'll want to take a pass on that pasta sushi roll pita burrito donut burger ________.
Solution
- processed
- sugar
- preventing
- alpha
- foods
- sensitivity
- fiber
- effect
- indigestible
- sandwich
- thousands
- sugars
- called
- starches
- understand
- increasing
- digestive
- action
- moves
- content
- lactose
- resistance
- linkages
- pressure
- composed
- cells
- kicks
- fruits
- building
- similar
- cardiovascular
- simple
- break
- digested
- carbs
- breaks
- blood
- bonds
- starch
- maltose
- insulin
- circumference
- trick
Original Text
Which of these has the least carbohydrates? This roll of bread? This bowl of rice? Or this can of soda? It's a trick question. Although they may differ in fats, vitamins, and other nutritional content, when it comes to carbs, they're pretty much the same. So what exactly does that mean for your diet? First of all, carbohydrate is the nutritional category for sugars and molecules that your body breaks down to make sugars. Carbohydrates can be simple or complex depending on their structure. This is a simple sugar, or monosaccharide. Glucose, fructose, and galactose are all simple sugars. Link two of them together, and you've got a disaccharide, lactose, maltose, or sucrose. Complex carbohydrates, on the other hand, have three or more simple sugars strung together. Complex carbohydrates with three to ten linked sugars are oligosaccharides. Those with more than ten are polysaccharides. During digestion, your body breaks down those complex carbohydrates into their monosaccharide building blocks, which your cells can use for energy. So when you eat any carbohydrate-rich food, the sugar level in your blood, normally about a teaspoon, goes up. But your digestive tract doesn't respond to all carbohydrates the same. Consider starch and fiber, both polysaccharides, both derived from plants, both composed of hundreds to thousands of monosaccharides joined together, but they're joined together differently, and that changes the effect they have on your body. In starches, which plants mostly store for energy in roots and seeds, glucose molecules are joined together by alpha linkages, most of which can be easily cleaved by enzymes in your digestive tract. But in fiber, the bonds between monosaccharide molecules are beta bonds, which your body can't break down. Fiber can also trap some starches, preventing them from being cleaved, resulting in something called resistant starch. So foods high in starch, like crackers and white bread, are digested easily, quickly releasing a whole bunch of glucose into your blood, exactly what would happen if you drank something high in glucose, like soda. These foods have a high glycemic index, the amount that a particular food raises the sugar level in your blood. Soda and white bread have a similar glycemic index because they have a similar effect on your blood sugar. But when you eat foods high in fiber, like vegetables, fruits, and whole grains, those indigestible beta bonds slow the release of glucose into the blood. Those foods have a lower glycemic index, and foods like eggs, cheese, and meats have the lowest glycemic index. When sugar moves from the digestive tract to the blood stream, your body kicks into action to transfer it into your tissues where it can be processed and used for energy. Insulin, a hormone synthesized in the pancreas, is one of the body's main tools for sugar management. When you eat and your blood sugar rises, insulin is secreted into the blood. It prompts your muscle and fat cells to let glucose in and jump starts the conversion of sugar to energy. The degree to which a unit of insulin lowers the blood sugar helps us understand something called insulin sensitivity. The more a given unit of insulin lowers blood sugar, the more sensitive you are to insulin. If insulin sensitivity goes down, that's known as insulin resistance. The pancreas still sends out insulin, but cells, especially muscle cells, are less and less responsive to it, so blood sugar fails to decrease, and blood insulin continues to rise. Chronically consuming a lot of carbohydrates may lead to insulin resistance, and many scientists believe that insulin resistance leads to a serious condition called metabolic syndrome. That involves a constellation of symptoms, including high blood sugar, increased waist circumference, and high blood pressure. It increases the risk of developing conditions, like cardiovascular disease and type II diabetes. And its prevalence is rapidly increasing all over the world. As much as 32% of the population in the U.S. has metabolic syndrome. So let's get back to your diet. Whether your food tastes sweet or not, sugar is sugar, and too many carbs can be a problem. So maybe you'll want to take a pass on that pasta sushi roll pita burrito donut burger sandwich.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
blood sugar |
4 |
digestive tract |
3 |
body breaks |
2 |
simple sugars |
2 |
complex carbohydrates |
2 |
sugar level |
2 |
foods high |
2 |
glycemic index |
2 |
insulin lowers |
2 |
insulin sensitivity |
2 |
insulin resistance |
2 |
metabolic syndrome |
2 |
high blood |
2 |
Important Words
- action
- alpha
- amount
- beta
- blocks
- blood
- body
- bonds
- bowl
- bread
- break
- breaks
- building
- bunch
- burger
- burrito
- called
- carbohydrate
- carbohydrates
- carbs
- cardiovascular
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- cheese
- chronically
- circumference
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- complex
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- condition
- conditions
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- consuming
- content
- continues
- conversion
- crackers
- decrease
- degree
- depending
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- diabetes
- diet
- differ
- differently
- digested
- digestion
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- disaccharide
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- donut
- drank
- easily
- eat
- effect
- eggs
- energy
- enzymes
- fails
- fat
- fats
- fiber
- food
- foods
- fructose
- fruits
- galactose
- glucose
- glycemic
- grains
- hand
- happen
- helps
- high
- hormone
- hundreds
- ii
- including
- increased
- increases
- increasing
- index
- indigestible
- insulin
- involves
- joined
- jump
- kicks
- lactose
- lead
- leads
- level
- link
- linkages
- linked
- lot
- lowers
- lowest
- main
- maltose
- management
- meats
- metabolic
- molecules
- monosaccharide
- monosaccharides
- moves
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- nutritional
- oligosaccharides
- pancreas
- pass
- pasta
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- plants
- polysaccharides
- population
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- processed
- prompts
- question
- quickly
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- rapidly
- release
- releasing
- resistance
- resistant
- respond
- responsive
- resulting
- rice
- rise
- rises
- risk
- roll
- roots
- sandwich
- scientists
- secreted
- seeds
- sends
- sensitive
- sensitivity
- similar
- simple
- slow
- soda
- starch
- starches
- starts
- store
- stream
- structure
- strung
- sucrose
- sugar
- sugars
- sushi
- sweet
- symptoms
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- synthesized
- tastes
- teaspoon
- ten
- thousands
- tissues
- tools
- tract
- transfer
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- type
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- unit
- vegetables
- vitamins
- waist
- white
- world