For years, overweight women who become pregnant have been advised to limit their weight gain to 25 pounds over nine months.
But on Thursday, health officials sharply reduced that number for many of them. In the first revision of weight-gain guidelines since 1990, the Institute of Medicine and the National Research Council said that women who start their pregnancies very overweight should limit their gain to 11 to 20 pounds. . . .
The New York Times - May 28, 2009
http://www.nytimes.com/2009/05/29/health/research/29pregnant.html
