Mexico is world's most obese nation, report says

Mexico takes the cake for obesity, according to a United Nations report.

The Food and Agriculture Association of the United Nations listed Mexico as the industrialized nation with the highest prevalence of obesity among adults, as 32.8 percent of its population is obese.

The United States stands only one percentage point behind, though, with a 31.8 percent prevalence of obesity.

Not surprisingly, then, North America leads in obesity overall, while Latin America and Oceania hold the largest percentages among developing countries. Prevalence of obesity has increased between 1980 and 2008 in all regions.

According to the report, obesity is defined as "abnormal or excessive fat accumulation that may impair health" and is typically measured using Body Mass Index (BMI). The report addressed policy concerns regarding nutrition, such as the lower labor productivity and higher medical costs associated with obesity.