U.S. Birth Weights Falling?

In a strange bit of news, there’s  a new report out showing that U.S. birth rates of babies brought to term by “healthy, white mothers” in the US are on average 3 ounces lighter than they were 20 years ago.  It also finds that the average pregnancy is 2.5 days shorter than term.  The researchers looked at the national trend by analyzing a total of 36,827,828 singleton births carried to term (37 to 41 weeks), along with data on their mothers in the National Center for Health Statistics Natality Data Sets for the years 1990 through 2005.  Read more.