Survey finds most adults would flunk high school health class

WASHINGTON, D.C. (WPVI) -- Americans have a lot of mistaken information on their health, especially on food and nutrition.

A new survey by ORC International says most would flunk a high school health class.

Only one out of 10 questions were answered correctly by a majority of those responding.

Here are some of questions -

What does a calorie measure?

1) The health value of food (19%)

2) The smallest unit of energy humans can derive from food (16%)

3) Whether food is fattening or not (23%)

4) The energy value of food (42%)

Only 42% had the correct answer - the energy value of food.

How many calories are recommended per day for men and women?

1) Men: 1500 to 1800; women 1200 to 1500 (25%)

2) Men: 1800 to 2100; women 1500 to 1800 (47%)

3) Men: 2200 to 2800; Women 1800 to 2200 (24%)

4) Men: 3000 to 3300; women 2700 to 3000 (3%)

Less than 1 in 4 knew that it's 2200 to 2800 calories for men, and 1800 to 2200 calories for women.

The worst response was to this question: Which has more sugar - 8 ounces of orange juice or 8 ounces of Italian dressing?

Only 28 percent knew that it's the Italian dressing.

The best response was to the question: Do 'superfoods' have an official definition from the FDA?

62 percent correctly said 'no.'

To test your health, food and nutrition knowledge, take the Center for Accountability in Science quiz here.