Results were weighted to represent the population by demographic factors such as age, sex, religion and education.

No more than one time in 20 should chance variations in the sample cause the results to vary by more than 3 percentage points from the answers that would be obtained if all Americans were polled.

This margin of sampling error is slightly larger for responses of subgroups, such as registered voters.

There are other sources of potential error in polls, including the wording and order of questions.

1. I'm going to read a list of health risks facing adults in the United States. Please tell me which you think pose the greatest health risk to Americans today. The categories are ...

_Smoking, 18 percent

_Unhealthy eating habits, 30 percent

_Lack of physical activity, 19 percent

_Alcohol abuse, 5 percent

_Drug use, 16 percent

_Unsafe sexual behaviors, 10 percent

_Other, 1 percent

_Not sure, 1 percent

2. And how important a health problem is being overweight or obese for you and your family? Is it a ...

_Major problem, 14 percent

_Minor problem, 42 percent

_No problem at all, 44 percent

3. In your opinion, who is most responsible for Americans being overweight and obese?

_The individuals themselves, 77 percent

_The government, 1 percent

_Spouses, parents and other family members, 9 percent

_Fast-food restaurants, 8 percent

_Sit-down restaurants, 1 percent

_Food and snack manufacturers, 3 percent

_Beverage manufacturers, 0 percent

_Other, 1 percent

4a. Would you say that right now, you are ...

_Underweight, 5 percent

_Slightly underweight, 4 percent

_Somewhat underweight, 1 percent

_A healthy weight, 59 percent

_Overweight, 36 percent

_Slightly overweight 19 percent

_Somewhat overweight, 11 percent

_Very overweight, 6 percent

5a. Have you ever been on a diet to lose weight, or not?

_Yes, 52 percent

_No, 48 percent

6. At any time in the past year, have you actively tried to improve your physical fitness by following a regular program of physical exercise, or not?

_Yes, 66 percent

_No, 34 percent

7. Are you currently making an attempt to restrict the amount of fat in your diet, or are you not doing that?

_Yes, restricting the amount of fat, 56 percent

_No, not doing that, 44 percent

8. Are you currently making an attempt to restrict the amount of carbohydrates in your diet or are you not doing that?

_Yes, restricting the amount of carbohydrates, 33 percent

_No, not doing that, 67 percent

9. Are you currently making an attempt to restrict the total amount of calories you consumer per day, or are you not doing that?

_Yes, restricting calories, 38 percent

_No, not doing that, 62 percent

(ASKED OF THOSE WHO HAVE BEEN ON A DIET IN THE PAST)

10. Thinking about the most recent time you have dieted, how much weight, if any, did you gain back after you stopped your diet? Would you say you gained back ...

_All of it, 23 percent

_Most of it, 13 percent

_Only some of it, 41 percent

_Did not gain back any of the weight lost, 20 percent

_Didn't lose any weight by dieting, 1 percent

_Not sure, 2 percent

Source: Yahoo News: Associated Press.