Mary Roach

  • Aired:  04/01/13
  •  | Views: 17,982

"Gulp" author Mary Roach breaks down the process by which the body breaks down food. (5:39)

( CHEERS AND APPLAUSE )

>> Jon: MY GUEST TONIGHT IS A BEST-SELLING AUTHOR.

YOUR NEW BOOK IS ADVENTURES ON THE ELEMENTARY CANAL.

PLEASE WELCOME BACK TO THE PROGRAM, MARY ROACH.

I LIKE YOUR BOOK.

GREAT.

VERY FUNNY.

>> THANK YOU, JOHN.

Jon: THIS ONE IS CALLED... IT ANSWERS ALL THE QUESTIONS OF WHAT HAPPENS WHEN WE EAT.

FOOD.

AND THEN OBVIOUSLY...

>> YEAH Jon: THE POST FOOD.

THE WHOLE CHUTE Jon: THE WHOLE CHUTE.

WHY DOESN'T THE STOMACH DIGEST ITSELF WHICH BRINGS UP AN INTERESTING POINT THAT I WOULD

LIKE LIKE TO ASK YOU.

WHY DOESN'T THE STOMACH DIGEST ITSELF

>> YOU CAN EAT STOMACH AND YOUR OWN STOMACH WILL SAY I CAN TAKE THAT APART BUT YET YOUR OWN STOMACH.

THE ANSWER IS... READY?

IT DOES.

TRICK.

IT DOES.

BUT IT'S ALSO YOUR... YOUR STOMACH IS VERY GOOD AT REBUILDING YOUR STOMACH LINING

SO IT DOES BUT THEN IT BUILDS IT BACK UP.

I LOVE THIS, EVERY THREE DAYS YOU HAVE A NEW STOMACH LINING.

>> Jon: REALLY?

AND I DO TOO.

Jon: I DON'T KNOW ABOUT YOU.

I HAVE A NEW STOMACH LINING.

SO IT'S A CONSTANT PITCH BATTLE.

EXHAUSTED PEOPLE REBUILDING STOMACH

>> YOUR POOR STOMACH.

IT NEVER STOPS WORKING ON YOUR BEHALF

>> Jon: UNBELIEVABLE.

TALK TO ME ABOUT THE BEGINNING OF THE PROCESS WHICH WOULD BE THE SALIVA

>> ORAL PROCESSING Jon: THANK YOU.

TALK TO ME

>> ORAL PROCESSING.

OKAY.

THIS IS SOMETHING... I WENT TO THE UNIVERSITY IN THE NETHERLANDS WHERE THERE'S NOT A

WHOLE LOT OF PEOPLE WHO GO INTO THE FIELD OF ORAL PROCESSING.

>> Jon: YOU HAVE TO GO TO A INSTITUTE.

>> YOU HAVE TO GO TO AN INSTITUTE IN THE NETHERLANDS

>> Jon: IS THAT THEY CALL IT IN THE NETHERLANDS?

>> SO WHAT IT'S ALL ABOUT IN THERE IS BOLUS FORMATION.

YOU'RE TAKING YOUR FOOD APART.

GRINDING IT UP.

TAKING IT APART.

THEN YOU NEED TO REASSEMBLE IT IN THE SWALLOWABLE STATE.

WHICH IS A SILL INDEPENDENT RICKAL BOLUS WHICH IS ONE OF MY FAVORITE WORDS

>> Jon: I THINK ORAL PROCESSING BOLUS IS NOW ONE OF MY FAVORITE WORDS.

BUT SO YOU'RE BREAKING APART YOUR FOOD TO ALLOW I GUESS THE SAL I'VE A TO WORK ON IT.

HOW DO YOU REFORM IT INTO A CYLINDER.

I NEVER THOUGHT ABOUT THIS BEFORE BUT NOW THAT I AM, THERE'S NO WAY I'M EVER GOING TO

BE ABLE TO MAKE A CYLINDER AGAIN TO SWALLOW.

I'M GOING TO BE MAKING LIKE TRAPEZOIDS.

HOW DOES THE BODY DO THAT?

>> THERE'S A CERTAIN AMOUNT OF INTRAORAL BOLUS ROLLING THAT GOES ON.

THAT WAS EASY.

>> Jon: LATE AT NIGHT.

THE TONGUE, THE WONDERFUL TONGUE

>> Jon: IT DOES IT WITHOUT US THINKING ABOUT IT

>> IF YOU TRY TO THINK ABOUT IT, IF YOU TRY TO PAY ATTENTION, IT'S VERY, VERY... I TRIED

BECAUSE THIS IS WHAT I WAS DOING FOR TWO YEARS.

I WAS LIKE TRYING TO PAY ATTENTION TO MY BOLUS FORMATION.

IT'S VERY HARD.

YOU GET SORT OF CREEPED OUT.

>> Jon: IF YOU EAT SILL INDEPENDENT RICKAL FOOD, DOES YOUR MOUTH GO LIKE GOOD DAY FOR

US, EASY DAY LIKE CHEETOS ARE CYLINDERRAL

>> THE COMPETITOR EATERS IT'S THE BOLUS SHAPED.

STRAIGHT DOWN.

>> Jon: YES.

THAT'S WHY HOT DOGS ARE SHAPED THAT WAY.

SO YOU'VE PUT... SO, SO, SO...... I MEAN, THE BEAUTIFUL PART ABOUT IT IS IT IS A BOLUS

GOING DOWN AND IF THINGS ARE GOING RIGHT THE BOLUS ON THE WAY OUT

>> YOU ARE SO GOOD.

Jon: THANK YOU.

I READ.

ARE THERE... BUT IN THE STOMACH IT IS NON-BOLUS

>> IN THE STOMACH IT IS...

Jon: MORE LIKE A SLURRY.

CHYME.

THAT IS THE SLURRY.

>> Jon: THAT'S TWO MADE UP WORDS.

LIKE THE BOLUS.

THE CHYME.

>> THAT IS, YEAH, BROKEN DOWN IN KIND OF A SLURRY.

IT CAN BE PASSED ON EASILY THROUGH THE SPHINGTER THERE AT THE BOTTOM OF THE STOMACH.

>> Jon: THE SPHINGTER IS DOING THE BOLUS WORK TURNING IT...

>> BECAUSE THE INTESTINES ARE A TUBE, THE CYLINDER IS A NATURAL SHAPE FOR THE INTERIOR OF THE...

>> Jon: HOLD ON ONE SECOND.

I JUST WANT TO TELL MY KIDS.

GOOD NIGHT, GUYS.

YOU STICK AROUND.

IT IS ON THE BOOK SHELVES NOW.

WONDERFUL AS EVERY MARY ROACH BOOK IS.

YOU SHOULD GET IT.

MARY ROACH, EVERYBODY.

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