A study commissioned by the Bill and Melinda Gates Foundation and published by the World Health Organization earlier this week reached some starting public health conclusions. The study found that the proportion of overweight and obese people increased in every country in the world between 1980 and 2013, and that nutrition-related diseases, including diabetes and pancreatic cancer, are also increasing. The report, published in the Lancet yesterday, found that globally, 36.9 percent of men and 38.0 percent of women are now overweight, increases from 28.8 percent of men and 29.8 percent of women in 1980. The study found that the fastest rate of growth in the prevalence of overweight and obesity was in the developing world. And perhaps most alarmingly, the report could not identify a single national success story—a country in which the proportion of overweight and obesity held steady or declined over the study period.

The study’s lead…