Out of every 100 people in your country, how many do you think are overweight? When Ipsos MORI posed this question to respondents recently, the majority of them significantly underestimated the prevalence of obesity . In India, however, there was an overestimation. Only 20 percent of people are overweight while the average guess there was 41 percent. In the United States, people guessed that the obesity rate is 50 percent. In reality, it is 66 percent. Saudi Arabia is struggling with an obesity problem and its citizens significantly underestimated its extent. They guessed that 28 out of every 100 people are overweight while in reality, the number is 71.