Although the evidence is mixed, most experts still recommend you wait until your baby is 4-7 months old to introduce soft solids, like cereal and mashed bananas. During this time, your baby's intestines are in a developmental stage called closure, in which the permeable intestinal lining secretes an immunoglobulin called IgA. IgA acts like a protective paint, coating the intestines and screening out potentially harmful allergens that might create a food allergy in your baby.
The stomach's mucous membrane lining contains glands and pits that secrete digestive juices, which aid in the breakdown of complex food molecules like proteins.
Related Health Centers:
Infant Nutrition Health Center, Mother-Baby Bond Health Center, Mother’s Milk Health Center, Monthly Infant Development Calendar Health Center,Weekly Pregnancy Calendar Health Center