http://www.nature.com/news/2006/060424/full/060424-9.html The growth charts for babies have been 'corrected'. The previous charts were based on measurement on mostly American babies that were formula fed. Formula feeding increases the natural growth rate of breastfed babies. In fact many formula fed babies would be considered to be overweight according to the new charts. I noticed that in the US it is still standard to formula feed babies, while for instance in Finland it is standard to breastfeed. But the tide seems to be changing albeit slowly. I wonder if there has been any research on the long term effects of formula feeding. The technique is quite different from breastfeeding. The formula babies eat more in a shorter time. The breastfed baby tends to have more feeding sessions in which he eats more slowly and eats less. I would imagine this has an influence on the metabolism that could stay with an individual for the rest of his life. Maybe this would be a nice topic to discuss here. There are many aspects of breastfeeding we could discuss on a social and scientific level.