The U.S. obesity epidemic continues to worsen: The latest reports show that 40 percent of U.S. women are obese, and American teenagers are also continuing to put on weight.
The two reports from the Centers for Disease Control and Prevention show that efforts to encourage Americans to lose weight — at least to stop putting on more weight — are having little effect.
Overall, 38 percent of U.S. adults are obese and 17 percent of teenagers are, the two reports find.
That's obese — medically defined as having a body mass index (BMI), a measure of height to weight, that's more than 30. Another third or so of Americans are overweight.
People are considered overweight when their BMI hits 25, and they are obese when it gets to 30.
Someone who is 5-foot-5 and weighs 149 pounds has a body mass index of 24, considered a healthy weight. Add a pound and the same person has a BMI of 25 and is considered overweight. At 180 pounds this person has a BMI of 30 and is considered obese.