The right time to wean
Most experts agree that weaning should begin sometime between 4 and 6 months of age. Nearly all babies are developmentally ready to sample their first solid foods by then. At this age, baby can sit up, hold up his or her head, and coordinate chewing with swallowing. He or she is also developing the ability to accept smooth foods from a spoon.

By 4 to 6 months of age, baby's ability to digest and absorb nutrients is virtually mature. His or her kidneys are also able to handle the extra sodium and extra protein present in some solid foods.

The right time to wean should be determined with the help of your health care professional, who can best evaluate your baby's progress and needs.

The problem with early weaning
Introducing foods before your child is 4 to 6 months of age may cause problems. Before the age of 4 months, your baby cannot coordinate chewing with swallowing. Your baby's digestive system may be unable to tolerate a variety of foods. Also, because kidney function is not mature, a young baby cannot handle the extra sodium and extra protein present in some solid foods.

When solid foods are given too early, so little is consumed that it makes an insignificant contribution to your child's diet. Research has also shown that introducing solid food early does not help your baby sleep through the night.

Introducing food too early to an infant who doesn't want it or cannot handle it can result in unpleasant feeding experiences for both parent and infant. Waiting until your baby is ready to handle more "mixed fare" can facilitate a smoother transition.

The problem with late weaning
By 6 months of age, breast milk or formula is unlikely to provide all of your baby's nutritional requirements. To meet increased nutritional needs, you should begin to add more food to your child's diet.

Weaning is also important because it introduces your baby to new tastes and textures that will prepare him or her for a more adult diet. If you wait much beyond the age of 6 months, your baby may be less willing to accept solid foods.