Breast milk contains much less iron than formulas, especially the iron enriched formulas. Actually, this seems to give the baby extra protection against infection, as many bacteria require iron in order to multiply. The iron in breast milk is very well utilized by the baby (about 50 percent is absorbed) while being unavailable to bacteria, and the breastfed full-term baby does not need any additional iron before about six months of age. However, the introduction of iron-containing foods should not be delayed much beyond six months of age.
Adding solid foods
Breastfed babies normally do not require solid foods before six months of age. Indeed, many do not require solid foods until nine months or more of age, if we can judge by their weight gain and iron status. However, there are some babies who will have great difficulty learning to accept solid food if not started before seven to nine months of age.
Because the six-month-old baby will also soon need to have an additional source of iron, it is generally recommended and convenient that solids be introduced around six months of age. Some babies show great interest in grabbing food off your plate by five months, and there is no reason not to allow them to start taking the food and playing with it and putting it in their mouths and eating it.
It has been the habit of physicians to suggest that babies be started first on cereals and then other foods be added. However, the six-month-old is far different from the four-month-old. Many six-month-old babies do not seem to like cereal if it is introduced at this time. Do not push the baby to take it, but offer other foods and perhaps try again when your baby is a little older. But if he refuses, do not worry he will be missing something. There is nothing magic about cereal, and babies do fine without it. Anyhow, your baby may soon be eating bread. The easiest way for the baby to get additional iron is by his eating meat.
There is no good reason why a baby needs to eat or be introduced to only one food per week or why vegetables should be started before fruits. Anyone worried about the sweetness of fruit has not tasted breast milk. The six-month-old can be given almost anything off his parents’ plates that can be mashed with a fork.
Far fewer feeding problems will occur if a relaxed approach to feeding is taken."
I hope you will find it helpful. I copied it from http://www.naturalfamilyonline.com/go/index.php/268/suppl...