Recent studies have suggested that infants raised on formula who are introduced to solid foods before four months of age tend to gain more weight within the first year. This latest study, however, finds the age at which babies were given solid foods didn't seem to influence much of their longer term growth.
By two years, there were no differences between groups in weight or length.
Parents should talk to their doctors first. Other concerns such as allergies could be an issue.
This study appears in the "American Journal of Clinical Nutrition."