And almost half say if they were granted a single wish, they'd rather be at their ideal weight than be five years younger.
"A dream body is almost a two-fer. If you are at an ideal weight you'll not only look great but you'll probably live longer," says Bruce Daggy, vice president of research and development for Nutrisystem, which sponsored the survey. "We know that a healthy weight is associated with healthy aging."
Bonnie Taub-Dix, a registered dietitian in New York City and nutrition blogger on food.usatoday.com, says, "Many people wish they could have a better body without realizing that the power is in their hands the hands that lift their forks. I've been counseling people for decades who wish they could be as thin as their friends, but they fail to realize that their friends are not eating large portions or multiple snacks during the day."
Currently about 66% of people in the U.S. are overweight or obese, which puts them at a greater risk of heart disease, diabetes, cancer and other chronic diseases.
Other findings from the poll, conducted by Kelton Research for the diet company:
•When they gain weight, about half of people say they have less energy; a fourth have more stress.
•When they are trying to lose weight, more than half of dieters say they compare themselves to someone else, often friends, co-workers, siblings or celebrities.
• About a quarter of women say that Jennifer Lopez and Halle Berry have the kind of bodies they want; almost half of men say they'd like Matthew McConaughey's bod.