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Why Don't Your Eyelashes Grow?: Curious Questions Kids Ask About the Human Body [NOOK Book]

Overview

Read Beth Ann Ditkoff's posts on the Penguin Blog.

Ever wondered what that small dewdrop thing is in the back of your throat? Or why you hiccup? Why Don’t Your Eyelashes Grow? addresses every weird question about your body that you could think of—or didn’t even think to ask. Prompted by the brain stumpers her own children and patients have asked her over the years, Dr. Beth ...
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Why Don't Your Eyelashes Grow?: Curious Questions Kids Ask About the Human Body

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Overview

Read Beth Ann Ditkoff's posts on the Penguin Blog.

Ever wondered what that small dewdrop thing is in the back of your throat? Or why you hiccup? Why Don’t Your Eyelashes Grow? addresses every weird question about your body that you could think of—or didn’t even think to ask. Prompted by the brain stumpers her own children and patients have asked her over the years, Dr. Beth Ann Ditkoff compiled a list of curious medical questions. In this book, she reveals the mysteries of the human body (gross, funny, or ugly!) to children and adults.

With eye-opening questions, like “Why do toenails grow slower than fingernails?” and “Why do you have earwax?” to weird oddities, like “Why do some people have dimples?” and “Why do you get a headache when you eat ice cream too quickly?” Ditkoff also explains hilarious and bizarre anatomy “situations” that every curious kid wonders, from “If you put a pea up your nose, will it go into your brain?” to “If you eat Pop Rocks candy and drink soda at the same time, will your stomach explode?” With expert explanations throughout, Why Don’t Your Eyelashes Grow? is an entertaining potpourri of fun factoids packed with real information.


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What People Are Saying

Mehmet Oz
"Dr. Ditkoff's informative and accessible book will save parents the embarrassment of making up mediocre answers to the often sophisticated questions children ask about the miracles of the human body. Pass along the knowledge with this well thought-out book."--(Mehmet Oz, M.D., coauthor of You: The Owner's Manual)
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Product Details

  • ISBN-13: 9781440641916
  • Publisher: Penguin Group (USA)
  • Publication date: 10/2/2008
  • Sold by: Penguin Group
  • Format: eBook
  • Pages: 192
  • Sales rank: 884,861
  • File size: 419 KB

Meet the Author

Beth Ann Ditkoff, M.D., is a former surgeon at New York-Presbyterian Hospital / Columbia University Medical Center in New York City and coauthor of The Thyroid Guide. She lives in Westchester County, New York.



Andrea Ditkoff is twelve years old and in the seventh grade, and Julia Ditkoff is ten years old and in the fifth grade. They provided all of the questions for this book.


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Read an Excerpt

Why are your lips red?

First of all, did you know that the outline or the border of your lips (called the vermillion border) is a special feature of humans only? This transition line from your skin to the pinkish-red part of your lips is found only in humans—no one knows why. The lips appear red because of the underlying blood vessels. Arteries and veins are connected through a series of tiny interlocking loops of blood vessels call capillaries. These red-colored blood-filled capillaries are close to the thin skin on your lips, so your lips appear red.

Why doesn't it hurt when you get a haircut?

Your hair is made up of two main parts—the hair follicle and the hair shaft. The follicle is the root that sits inside the scalp and contains the part of the hair that is alive and can feel pain. The hair shaft is the part of your hair that is outside the scalp that you can see. It is made up of protein called keratin—but this protein does not contain living cells. Therefore, when you cut the keratin protein it doesn't hurt. But you do feel pain if your hair is yanked out of the scalp, because the hair is being pulled out of its root, the living part of the hair.

Why do I laugh when I think something's funny?

Humans are not the only animals who have the ability to laugh. Smiling and laughing have been observed in non-human primate species during social play. This type of behavioral response serves as a signal to the group by spreading positive emotions, decreasing stress, and contributing to the cohesiveness of the group.

Humor-evoked laughter in humans can be divided into three stages. When listening to a joke, the first part of the humor is the punch line, an incongruous ending. Second, your mind begins to problem-solve in order to interpret this incongruity or surprise. Finally, the brain is able to appreciate these steps, which together form humor and evoke a response of laughter.

The neurotransmitter dopamine (a brain chemical) is responsible for allowing the brain to progress through the stages of humor. Dopamine allows us to feel good when we laugh. Some studies have demonstrated an improvement in health for chronically ill patients when they are exposed to funny stimuli. Thus the old adage "Laughter is the best medicine" probably has a note of truth in it.

Why, when I'm asleep at night, do I sometimes startle myself awake?

As you pass through light and deep sleep cycles during the night, your arms and legs may occasionally twitch or jerk. Sometimes the movement is enough to wake you up briefly. If you have clusters of these repeated leg jerks—at least five jerks in an hour—you may have periodic limb movement disorder (PLMD), which is characterized by leg jerks every twenty to forty seconds, each of which causes a brief awakening.

Restless leg syndrome (RLS) is another type of motor syndrome that can cause sleep problems. RLS is characterized by a creepy-crawly or pins-and-needles sensation of the lower legs, which is only relieved by moving them. Both PLMD and RLS can cause difficulty falling asleep and staying awake, which can lead to daytime sleepiness. In moderate to severe cases, prescription medication may be helpful.

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Table of Contents


Introduction xv Your Body 101 Why do you have bumps on your tongue? 3 Why do you have earwax? 4 What is that dewdrop thing in the back of your mouth? 5 Why can't human beings breathe underwater? 6 Why is your eye color blue, brown, or green? 7 Why do you have eyebrows? 8 Why do you hiccup? 9 Why are the ends of your nails white and the other part pink? 10 Why do you have wisdom teeth? 11 Why can't your skin be purple, green, or blue? 12 Why do you have an appendix? 13 Why do you have baby teeth when you're a child? 14 Why are your lips red? 15 What happens when your legs or arms "fall asleep"? 16 What is the difference between identical and fraternal twins? 17 Why does your stomach growl? 18 Why do people snore? 19 Why are you left-handed or right-handed? 20 Why do we get cavities? 21 Why are we ticklish? 22 Why do some people have straight hair and some people have curly hair? 23 Why do we blush? 24 Why do we yawn? 25 What is your Adam's apple? 26 Why do we get scabs? 27 Why do some people have crooked teeth and others have naturally straight teeth? 28 Why do you get goose bumps when you are cold? 29 What is the black circle in your eye? 30 Why is blood red? 31 What is your ear made of? 32 Why does your blood look blue when it is in your body? 33 Why do I laugh when I think something is funny? 34 Why do human beings cry? 35 What are moles? 36 Why do we form scars? 37 What do your tonsils do? 38 How does food give you energy? 39 Why do you have a belly button? 41 Why does your mouth make spit? 42 What's a concussion? 43 Why does your heart make a "lub-dub" sound when it beats? 44 What is a charley horse? 45 What is a cell? 46 Why is a bruise black and blue? 47 Why do some people havefreckles? 48 Why do some people have dimples? 49 What are genes? 50 What happens when you break a bone? 51 The Weird, the Ugly, and the Downright Gross Why don't your eyelashes grow? 55 Why doesn't it hurt when you get a haircut? 56 Why do some people have "innie" belly buttons and some people have "outies"? 57 Why do you see fireworks when you close your eyes and press on them? 58 Why do we get wrinkles as we get older? 59 Why do we burp? 60 Why is your poop brown? 61 Why do we get gray hair? 62 Why do we sometimes feel nauseated while in a car or on a bus? 63 What are lice? 64 Why do we have nightmares? 65 Why do toenails grow slower than fingernails? 66 Why do people get pimples? 67 Why do we have boogers? 68 Why do people have hair in their nose? 69 Why do farts smell? 70 Why do you get bad breath? 71 What are warts? 72 Can someone really have six toes on one foot? 73 Why don't human beings have tails? 74 Why do your teeth turn yellow? 75 Why do some people have bad body odor? 76 Why do your fingers and toes look like prunes when you come out of the pool? 78 Why are some people able to wiggle their ears? 79 Why is pee yellow? 80 What are bedbugs? 81 Why do some women have mustaches? 82 Why do some men have boobs? 83 Why do some people have fat that shakes like Jell-O? 84 Why do people vomit? 85 What does it mean to be double-jointed? 86 Why do people bite their nails? 88 Why do tears taste salty? 89 What are growing pains? 90 Why do babies have a "soft spot" on their head? 91 Why can't one eye move up while the other eye moves down? 92 Why do your eyes close when you sneeze? 93 Why do men pee standing up and women pee sitting down? 94 Why can't men become pregnant? 95 Why do some men go bald? 96 What does it mean to be tongue-tied? 97 Why do people get dandruff? 98 Body Afflictions and Everyday Strange Things That Can Happen Why are some people color-blind? 101 What makes some people stutter? 102 Why do some people need to wear eyeglasses? 103 Why do some people have food allergies? 104 Why, when I'm asleep at night, do I sometimes startle myself awake? 105 Why do your ears pop when you're on a plane? 106 Why do you get sunburned? 107 Why do you sometimes get a stitch in your side when you run or walk fast? 108 Why do people sleepwalk? 109 Why does blond hair turn green in a pool? 111 Why does your heart beat faster when you exercise? 112 What is athlete's foot? 113 Why do your lips turn blue when you swim in cold water? 114 Why do mosquito bites itch? 115 Why do some people grind their teeth at night? 116 Why does your face pucker when you suck on a lemon? 117 Can your contact lens get lost in your eye and float into your brain? 118 Why do some people get fat? 119 Why do mosquitoes bite some people and not others? 120 What is a hangnail? 121 Why can't I get rid of this song that is stuck in my head? 122 Why does poison ivy make us itch? 124 Urban Myth and What If?
Is it really bad to crack your knuckles? 127 What happens if you swallow a penny? 128 What happens if you eat dog food? 129 Can you tell your fortune by reading your palm? 130 Why do you get a headache if you eat ice cream too quickly? 131 Can you really get rabies from a dog bite? What is rabies, anyway? 132 What happens if you swallow gum? 133 If you put a pea up your nose, will it go into your brain? 134 Can you catch a cold if you don't wear a coat in winter? 135 Can your MP3 player really cause you to go deaf? 136 What would happen if I never brushed my hair? 137 If you drop food on the floor, is it still safe to eat if it doesn't touch the floor for more than five seconds? 138 Is it true that a dog's mouth is cleaner than a human's? 139 If you eat Pop Rocks candy and drink soda at the same time, will your stomach explode? 141 If you eat carrots, will you see better? 142 Is eating raw cookie dough really bad for you? 143 Is it true that if you swallow a watermelon seed, you will grow a watermelon in your stomach? 144 Do twins have the same fingerprints? 145 Can you get lead poisoning from a pencil? 146 Can you be allergic to jewelry? 147 Are green bananas bad for you? 148 Do you really need to drink eight 8-ounce glasses (8 x 8) of water a day to be healthy? 149 Can you get frostbite in just a few minutes if it's really cold outside? 150 Will you go blind if you sit too close to the TV? 151 Why is breakfast the most important meal? 152 Does a tongue piercing hurt? 153 If you cross your eyes will they get stuck? 155 Is caffeine bad for you? 156 Can eating chicken soup really cure a cold? 157 Does an apple a day really keep the doctor away? 158 Do you really need to wait an hour after eating before going swimming? 160 Bonus Body Trivia How does an X-ray work? 163 What does an IQ test measure? 164 How much does your brain weigh? 165 How many bones are in your body? 166 What is the smallest bone in your body? 167 What is the smallest muscle in your body? 168 What is the longest muscle in your body? 169 How many times a day do you blink? 170 How many times a day does your heart beat? 171
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Customer Reviews

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Sort by: Showing all of 7 Customer Reviews
  • Anonymous

    Posted May 31, 2014

    Very good

    The author explains things very well about the questions that are written.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted February 15, 2012

    Awesome

    Poop

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  • Anonymous

    Posted February 23, 2009

    My family and I loved this book!

    My children and I loved this book! It really helped answer some questions that they have asked and I just did not know the answer too! It was like the authors read our minds and knew what kids would ask about. I recommend this book to any parent who needs answers to some interesting questions!

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  • Anonymous

    Posted November 21, 2008

    Best Book Ever

    I really enjoyed reading this book. I liked it because it kept me interested the entire time. I hope all people will buy this and enjoy it as much as I do.

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  • Anonymous

    Posted October 19, 2008

    Great book for all family's-- great fun

    This book helped my family and I become closer together. We would all sit around the kitchen while eating dinner, we would laugh at all of the good questions and enjoy the bonding time we were having together. My family also thought this book was pretty neat because it was written by a mother and her two daughters wrote it. It has inspired us to really start to read more intense books.

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  • Anonymous

    Posted October 1, 2008

    great book for kids and parents

    This book taught me a lot and helped me answer what my children were asking. I would recommend this book to families.

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  • Anonymous

    Posted April 22, 2011

    No text was provided for this review.

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