U.S. newborns are weighing less, study finds

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…

“We were startled by the findings,” said senior author Dr. Emily Oken, assistant professor of population medicine at Harvard Medical School. “We tried really hard to explain it away, but we were unable to…”

Read more here (Los Angeles Times)