<TED Worksheet>
19. How sugar affects the brain
Nicole Avena
<4:48>   January 2014

 

Questions
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Answers
(PDF)   (Word)

Trascript

 

 

≪Questions:How sugar affects the brain≫

1. Sugar is a term used to describe a class of molecules

of _______________.

 

2. List three forms of sugar that are mentioned in the speech.

  (1)                                          

  (2)                                          

  (3)                                         

  

3. The following paragraph describes how sugar affects the brain and what happens when sugar hits our tongue. Fill in the blanks.

       Sugar activates the sweet-taste receptors, part of the taste buds on

the (1)                                   .

These receptors send a signal up

to the (2)                               stem,

and from there,it forks off into many

areas of the forebrain, one of

which is the cerebral cortex. 

Different sections of

the cerebral cortex process

different tastes:

(3)                                               ,

salty,

(4)                                                ,

and

(5)                                                 .

From there, the signal activates the brain’s

(6)                                          system,

which helps answer a single,

subconscious question:  should I

(7)                                                (3 words)?

Your stomach has

(8)                                         (2 words), too.

They are not taste buds,

but they send

(9)                                             

to your brain that you are

(10)                                                

or that your body should

produce more

(11)                                                 

to deal with the extra sugar you’re

eating.




4. Which statement is not true about dopamine?

a. There are many dopamine receptors in the forebrain.
b. Dopamine is the major currency of our reward system.
c. Broccoli causes dopamine to be released, but not as violently as drugs. 
d. Alcohol, nicotine, and heroin send dopamine into overdrive.

 

5. If you eat the same balanced meal many days in a row, your dopamine levels will spike less and less, and will eventually level out. Why?

  

 

6. Suppose, instead of a balanced meal, you eat sugar-rich food many days in a row. What will happen to your dopamine levels?

 

 

7. Which statement is true about sugar?

a. Some types of sugar don’t kickstart a domino effect in our brain that sparks a rewarding feeling.
b. Even eating a wedge of cake once in a while be harmful to your health.
c. Eating sugar-rich food will not cause any problems if you eat it with vegetables.
d. Sugar behaves a little bit like a drug, and that is why some people get hooked on sugary foods.

 



====================
≪Answers:How sugar affects the brain≫

1. Sugar is a term used to describe a class of molecules

of       carbohydrates    .

 

2. List three forms of sugar that are mentioned in the speech.

  (1)

  (2)

  (3)

Glucose, fructose, sucrose, maltose, lactose, dextrose, starch, high-fructose corn syrup, fruit juice, raw sugar, and honey.




3. The following paragraph describes how sugar affects the brain and what happens when sugar hits our tongue. Fill in the blanks.

       Sugar activates the sweet-taste receptors, part of the taste buds on

the (1)_tongue    . These receptors send a signal up

to the (2)_brain     stem, and from there,

it forks off into many areas of the forebrain,

one of which is the cerebral cortex.

Different sections of the cerebral cortex process different tastes:

(3)_bitter    , salty,

(4)_umami    , and

(5)_sugar    .

From there, the signal activates the brain’s

(6)    reward      system,

which helps answer a single,

subconscious question:  should I

(7)  do that again     (3 words)?

Your stomach has

(8)__sugar receptors     (2 words), too.

They are not taste buds,

but they send (9)  signals_ to your brain

that you are (10)     full    

or that your body should

produce more (11)__insulin     

to deal with the extra sugar you’re eating.




4. Which statement is not true about dopamine?

a. There are many dopamine receptors in the forebrain.
b. Dopamine is the major currency of our reward system.
c. Broccoli causes dopamine to be released, but not as violently as drugs. 
d. Alcohol, nicotine, and heroin send dopamine into overdrive.

 

5. If you eat the same balanced meal many days in a row, your dopamine levels will spike less and less, and will eventually level out. Why?
  
 The brain evolved to pay special attention to new or different tastes. (Why? There are two reasons:  first, to detect food that’s gone bad. And second, because the more variety we have in our diet, the more likely we are to get all the nutrients we need.)

 

6. Suppose, instead of a balanced meal, you eat sugar-rich food many days in a row. What will happen to your dopamine levels?

Your dopamine levels will not level out.

 

7. Which statement is true about sugar?
a. Some types of sugar don’t kickstart a domino effect in our brain that sparks a rewarding feeling.
b. Even eating a wedge of cake once in a while be harmful to your health.
c. Eating sugar-rich food will not cause any problems if you eat it with vegetables.
d. Sugar behaves a little bit like a drug, and that is why some people get hooked on sugary foods.

 

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