full transcript

From the Ted Talk by Rose Eveleth: The science of spiciness


Unscramble the Blue Letters


Why does your mtuoh feel like it's on fire when you eat a spicy pepper? And how do you soothe the burn? Why does wasabi make your eyes water? And how spicy is the spiciest scpie? Let's back up a bit. First, what is spiseicns? Even though we often say that something tastes spicy, it's not actually a taste, like sweet or staly or sour. Instead, what's really happening is that certain compounds in spicy foods activate the type of sensory nenorus called polymodal nroiteccpos. You have these all over your body, including your mouth and nose, and they're the same receptors that are activated by etxmree heat. So, when you eat a cilhi pepper, your mouth feels like it's burning because your brain actually thinks it's bunring. The opposite happens when you eat something with menthol in it. The cool, minty compound is activating your cold receptors. When these heat-sensitive receptors are activated, your body thinks it's in contact with a duogearns heat source and reacts accordingly. This is why you start to sweat, and your heart starts beating fstear. The peppers have elicited the same fight-or-flight rnsosepe with which your body reacts to most threats. But you may have noticed that not all spicy foods are spciy in the same way. And the difference lies in the types of cupmnoods involved. The capsaicin and piperine, found in black pepper and chili peppers, are made up of larger, heaevir mlceelous cleald alkylamides, and those mostly stay in your mouth. Mustard, horseradish, and wasabi are made up of smaller molecules, called isothiocyanates, that eaisly float up into your sinuses. This is why chili peppers burn your mouth, and wasabi burns your nose. The standard measure of a food's spiciness is its rating on the slovilce scale, which meraesus how much its capsaicin content can be diluted before the heat is no legnor detectable to humans. A sewet bell pepper gets 0 Scoville heat units, while Tabasco sauce coclks in between 1,200-2,400 units. The race to create the hottest pepper is a constant battle, but two peppers generally come out on top: The Trinidad Moruga Scorpion and the Carolina Reaper. These peppers measure between 1.5 and 2 mllioin Scoville heat units, which is about half the units found in pepper spray. So, why would anyone want to eat something that causes such high levels of pain? Nobody really knows when or why hnuams started eating hot peppers. ahrioslceatogs have found spices like mustard along with human artcftias dating as far back as 23,000 years ago. But they don't know whether the spices were used for food or medication or just dcetroaoin. More recently, a 6,000 year old crockpot, lnied with crrhead fish and meat, also contained mustard. One theory says that humans starting adding spices to food to kill off bacteria. And some studies show that spice developed mostly in warmer climates where microbes also happen to be more prevalent. But why we cnuotine to subject ourselves to spicy food today is still a bit of a mystery. For some people, eating spicy food is like riding rollercoasters; they enjoy the ensuing trlhil, even if the immediate sensation is unpleasant. Some sieutds have even sohwn that those who like to eat hot stuff are more likely to enjoy other adrenaline-rich activities, like gambling. The taste for spicy food may even be genetic. And if you're thinking about tniaring a bit, to up your tolerance for spice, know this: According to some studies, the pain doesn't get any better. You just get tguheor. In fact, researchers have found that people who like to eat spicy foods don't rate the burn any less painful than those who don't. They just seem to like the pain more. So, torment your heat receptors all you want, but rmeebemr, when it comes to spicy food, you're going to get burned.

Open Cloze


Why does your _____ feel like it's on fire when you eat a spicy pepper? And how do you soothe the burn? Why does wasabi make your eyes water? And how spicy is the spiciest _____? Let's back up a bit. First, what is _________? Even though we often say that something tastes spicy, it's not actually a taste, like sweet or _____ or sour. Instead, what's really happening is that certain compounds in spicy foods activate the type of sensory _______ called polymodal ___________. You have these all over your body, including your mouth and nose, and they're the same receptors that are activated by _______ heat. So, when you eat a _____ pepper, your mouth feels like it's burning because your brain actually thinks it's _______. The opposite happens when you eat something with menthol in it. The cool, minty compound is activating your cold receptors. When these heat-sensitive receptors are activated, your body thinks it's in contact with a _________ heat source and reacts accordingly. This is why you start to sweat, and your heart starts beating ______. The peppers have elicited the same fight-or-flight ________ with which your body reacts to most threats. But you may have noticed that not all spicy foods are _____ in the same way. And the difference lies in the types of _________ involved. The capsaicin and piperine, found in black pepper and chili peppers, are made up of larger, _______ _________ ______ alkylamides, and those mostly stay in your mouth. Mustard, horseradish, and wasabi are made up of smaller molecules, called isothiocyanates, that ______ float up into your sinuses. This is why chili peppers burn your mouth, and wasabi burns your nose. The standard measure of a food's spiciness is its rating on the ________ scale, which ________ how much its capsaicin content can be diluted before the heat is no ______ detectable to humans. A _____ bell pepper gets 0 Scoville heat units, while Tabasco sauce ______ in between 1,200-2,400 units. The race to create the hottest pepper is a constant battle, but two peppers generally come out on top: The Trinidad Moruga Scorpion and the Carolina Reaper. These peppers measure between 1.5 and 2 _______ Scoville heat units, which is about half the units found in pepper spray. So, why would anyone want to eat something that causes such high levels of pain? Nobody really knows when or why ______ started eating hot peppers. ______________ have found spices like mustard along with human _________ dating as far back as 23,000 years ago. But they don't know whether the spices were used for food or medication or just __________. More recently, a 6,000 year old crockpot, _____ with _______ fish and meat, also contained mustard. One theory says that humans starting adding spices to food to kill off bacteria. And some studies show that spice developed mostly in warmer climates where microbes also happen to be more prevalent. But why we ________ to subject ourselves to spicy food today is still a bit of a mystery. For some people, eating spicy food is like riding rollercoasters; they enjoy the ensuing ______, even if the immediate sensation is unpleasant. Some _______ have even _____ that those who like to eat hot stuff are more likely to enjoy other adrenaline-rich activities, like gambling. The taste for spicy food may even be genetic. And if you're thinking about ________ a bit, to up your tolerance for spice, know this: According to some studies, the pain doesn't get any better. You just get _______. In fact, researchers have found that people who like to eat spicy foods don't rate the burn any less painful than those who don't. They just seem to like the pain more. So, torment your heat receptors all you want, but ________, when it comes to spicy food, you're going to get burned.

Solution


  1. lined
  2. salty
  3. tougher
  4. continue
  5. spiciness
  6. heavier
  7. neurons
  8. shown
  9. humans
  10. studies
  11. million
  12. called
  13. measures
  14. sweet
  15. charred
  16. artifacts
  17. longer
  18. training
  19. extreme
  20. decoration
  21. archaeologists
  22. remember
  23. faster
  24. easily
  25. response
  26. spice
  27. compounds
  28. spicy
  29. scoville
  30. mouth
  31. nociceptors
  32. dangerous
  33. molecules
  34. burning
  35. thrill
  36. chili
  37. clocks

Original Text


Why does your mouth feel like it's on fire when you eat a spicy pepper? And how do you soothe the burn? Why does wasabi make your eyes water? And how spicy is the spiciest spice? Let's back up a bit. First, what is spiciness? Even though we often say that something tastes spicy, it's not actually a taste, like sweet or salty or sour. Instead, what's really happening is that certain compounds in spicy foods activate the type of sensory neurons called polymodal nociceptors. You have these all over your body, including your mouth and nose, and they're the same receptors that are activated by extreme heat. So, when you eat a chili pepper, your mouth feels like it's burning because your brain actually thinks it's burning. The opposite happens when you eat something with menthol in it. The cool, minty compound is activating your cold receptors. When these heat-sensitive receptors are activated, your body thinks it's in contact with a dangerous heat source and reacts accordingly. This is why you start to sweat, and your heart starts beating faster. The peppers have elicited the same fight-or-flight response with which your body reacts to most threats. But you may have noticed that not all spicy foods are spicy in the same way. And the difference lies in the types of compounds involved. The capsaicin and piperine, found in black pepper and chili peppers, are made up of larger, heavier molecules called alkylamides, and those mostly stay in your mouth. Mustard, horseradish, and wasabi are made up of smaller molecules, called isothiocyanates, that easily float up into your sinuses. This is why chili peppers burn your mouth, and wasabi burns your nose. The standard measure of a food's spiciness is its rating on the Scoville scale, which measures how much its capsaicin content can be diluted before the heat is no longer detectable to humans. A sweet bell pepper gets 0 Scoville heat units, while Tabasco sauce clocks in between 1,200-2,400 units. The race to create the hottest pepper is a constant battle, but two peppers generally come out on top: The Trinidad Moruga Scorpion and the Carolina Reaper. These peppers measure between 1.5 and 2 million Scoville heat units, which is about half the units found in pepper spray. So, why would anyone want to eat something that causes such high levels of pain? Nobody really knows when or why humans started eating hot peppers. Archaeologists have found spices like mustard along with human artifacts dating as far back as 23,000 years ago. But they don't know whether the spices were used for food or medication or just decoration. More recently, a 6,000 year old crockpot, lined with charred fish and meat, also contained mustard. One theory says that humans starting adding spices to food to kill off bacteria. And some studies show that spice developed mostly in warmer climates where microbes also happen to be more prevalent. But why we continue to subject ourselves to spicy food today is still a bit of a mystery. For some people, eating spicy food is like riding rollercoasters; they enjoy the ensuing thrill, even if the immediate sensation is unpleasant. Some studies have even shown that those who like to eat hot stuff are more likely to enjoy other adrenaline-rich activities, like gambling. The taste for spicy food may even be genetic. And if you're thinking about training a bit, to up your tolerance for spice, know this: According to some studies, the pain doesn't get any better. You just get tougher. In fact, researchers have found that people who like to eat spicy foods don't rate the burn any less painful than those who don't. They just seem to like the pain more. So, torment your heat receptors all you want, but remember, when it comes to spicy food, you're going to get burned.

Frequently Occurring Word Combinations


ngrams of length 2

collocation frequency
spicy foods 3
spicy food 3
scoville heat 2



Important Words


  1. activate
  2. activated
  3. activating
  4. activities
  5. adding
  6. alkylamides
  7. archaeologists
  8. artifacts
  9. bacteria
  10. battle
  11. beating
  12. bell
  13. bit
  14. black
  15. body
  16. brain
  17. burn
  18. burned
  19. burning
  20. burns
  21. called
  22. capsaicin
  23. carolina
  24. charred
  25. chili
  26. climates
  27. clocks
  28. cold
  29. compound
  30. compounds
  31. constant
  32. contact
  33. contained
  34. content
  35. continue
  36. cool
  37. create
  38. crockpot
  39. dangerous
  40. dating
  41. decoration
  42. detectable
  43. developed
  44. difference
  45. diluted
  46. easily
  47. eat
  48. eating
  49. elicited
  50. enjoy
  51. ensuing
  52. extreme
  53. eyes
  54. fact
  55. faster
  56. feel
  57. feels
  58. fire
  59. fish
  60. float
  61. food
  62. foods
  63. gambling
  64. generally
  65. genetic
  66. happen
  67. happening
  68. heart
  69. heat
  70. heavier
  71. high
  72. horseradish
  73. hot
  74. hottest
  75. human
  76. humans
  77. including
  78. involved
  79. isothiocyanates
  80. kill
  81. larger
  82. levels
  83. lies
  84. lined
  85. longer
  86. measure
  87. measures
  88. meat
  89. medication
  90. menthol
  91. microbes
  92. million
  93. minty
  94. molecules
  95. moruga
  96. mouth
  97. mustard
  98. mystery
  99. neurons
  100. nociceptors
  101. nose
  102. noticed
  103. pain
  104. painful
  105. people
  106. pepper
  107. peppers
  108. piperine
  109. polymodal
  110. prevalent
  111. race
  112. rate
  113. rating
  114. reacts
  115. reaper
  116. receptors
  117. remember
  118. researchers
  119. response
  120. riding
  121. salty
  122. sauce
  123. scale
  124. scorpion
  125. scoville
  126. sensation
  127. sensory
  128. show
  129. shown
  130. sinuses
  131. smaller
  132. soothe
  133. sour
  134. source
  135. spice
  136. spices
  137. spiciest
  138. spiciness
  139. spicy
  140. spray
  141. standard
  142. start
  143. started
  144. starting
  145. starts
  146. stay
  147. studies
  148. stuff
  149. subject
  150. sweat
  151. sweet
  152. tabasco
  153. taste
  154. tastes
  155. theory
  156. thinking
  157. thinks
  158. threats
  159. thrill
  160. today
  161. tolerance
  162. torment
  163. tougher
  164. training
  165. trinidad
  166. type
  167. types
  168. units
  169. unpleasant
  170. warmer
  171. wasabi
  172. water
  173. year
  174. years