Most Americans are overweight, according to a new study looking at overweight and obesity rates in the United States.

In a report published in JAMA Internal Medicine, researchers from Washington University School of Medicine in St. Louis studied data from 2007 to 2012 of a nationally representative group of 15,208 people ages 25 or older.

The researchers estimate that during that time period, 40% of men were overweight and 35% of men were obese. They estimate that 30% of women were overweig