Here Come Those Runaway Carbs!
They Can Make You Hungry for More ... and
More ... and More
why you sometimes feel REALLY hungry just a few hours after eating a big meal?
Probably, you ate the kinds of foods that put
a lot of sugar into your blood very quickly. Candy, donuts and desserts do that
because they contain a lot of sugar. But so do other carbohydrates
(car-bo-HI-drates) like pretzels, crackers, white bread, potatoes, white
rice--even many cereals.
Each of these
carbohydrates, or carbs for short, is made of sugar molecules all hooked
together like cars on a train. In your intestines, these molecules quickly
unhook from one another and roll on into your bloodstream--sometimes faster
than eating a spoonful of sugar.
One out of
every five U.S. kids is overweight. And being overweight is not healthy, says
Susan Roberts. She is a physiologist (fizzy-ALL-oh-jist) at the U.S.
Department of Agriculture's nutrition research center in Boston, Massachusetts.
Roberts wants to know why so many more children are
gaining weight than ever before. She thought some of the extra weight may be
coming from eating carbs that "shotgun" sugar into your blood. Some scientists
had already believed that it could make people want to eat again too soon. But
nobody had really tested this idea. So Roberts and other scientists did.
and lunch, they fed teenage boys one of three different meals. Each meal would
raise blood sugar QUICKLY, LESS
QUICKLY . . . or SLOWLY. Then they
measured how much the boys ate later the same day.
Sure enough, the
boys felt most hungry and ate the most calories after eating the meals that
raised blood sugar quickly.
But ... WHY
do those "shotgun" carbs make you hungry? Click here for answer.
news, says Roberts, is that kids can eat all the vegetables and fruits and
low-fat dairy products and whole grain cereals they want.
the carbs in these foods take longer to get into your blood. Lean meat and
poultry are good for you, too. And you won't want to pig out a few hours
--By Judy McBride,
formerly with the Information Staff, Agricultural Research