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About This QuizWe eat every day but what happens after the food leaves our mouths is mostly a mystery to many of us. Find out how your digestion knowledge stacks up with this digestive quiz.
How long does it take to digest an average meal?
8 to 12 hours
12 to 24 hours
A normal meal takes between 12 and 24 hours to digest completely.
How much saliva do you produce each day?
We typically produce 6 cups, or 1.5 quarts, of saliva each day.
How many servings of fruits, vegetables and whole grains should you eat daily?
Each of us should eat five servings of fruits, vegetables and whole grains each day.
What is the maximum daily recommended percentage of calories from fat?
Calories from fat should not exceed 30 percent of total calories consumed each day.
How much do Americans spend on laxatives each year?
Americans spend nearly $1 billion (actually about $900 million) on laxatives annually.
Why is fiber essential to a healthy digestive tract?
It acts as a natural laxative.
It fills you up so you don't overeat.
It keeps food moving through the digestive tract.
All of the above.
Fiber acts as a natural laxatives, gives us a "full" feeling that keeps us from overeating and keeps food moving smoothly through the digestive tract.
What is the most common digestive illness seen by doctors today?
Irritable bowel syndrome
Irritable bowel syndrome is the most common digestive condition about which people see their doctor each year.
How much money do Americans spend on dietary supplements each year?
Americans spend a breathtaking $14 billion on dietary supplements each year.
Which cereal has more bran?
Frosted corn flakes
Bran flakes have more fiber than most other cereals.
Alberto Ruggieri/Illustration Works/Getty Images