Protein allergy is more than a tolerance problem.
If you or your baby's father has ever had an allergy of any kind, your baby has increased odds of developing a protein allergy. The problem is that this response sets in motion a chain of events that can lead to problems such as colic. And remember, protein is important because it's necessary for the building of body tissues, including muscle. This means that the protein has been predigested into peptides and amino acids, its basic components. These components are generally too small to be recognized by the baby's immune system.