Don't obsess about every up and down of your infant's growth chart. It's only potentially a problem when there is a persistent downward trend, usually lasting many months.

In ambulatory care settings, infant growth is used to assess breastfeeding ... were not based on breastfed infants. Thus, a look at growth charts in use today is in order.

But growth percentile rankings aren't meant to ... babies are bigger than they were decades ago, when the infant chart data were collected. Another factor, Evers notes, is that doctors these ...