U.S. newborns are weighing less, study finds

Average birth weights have dropped slightly from 1990 to 2005. Researchers are unclear why. Birth weights in the United States are on the decline, a study has found. The report, released Thursday, found a small but significant decrease in average birth weights from 1990 to 2005, for reasons that scientists say are unclear.

Read the whole article on LA Times - Health

More from LA Times - Health