The Effects of Intestinal Microbiota on Newborn

The neonatal period is a critical period for gastrointestinal colonization, affecting the adult intestinal microbiota and the individual's lifelong health. The intestinal microbiota begins to form rapidly within a few hours after the newborn comes into contact with the mother's vagina and the environment and is affected by various factors such as the environment, gestational age, mode of delivery, hospitalization, antibiotic use, and diet. The changes in intestinal microbiota composition are reported to be associated with many conditions such as obesity, hypertension, diabetes, autoimmune diseases, allergy, autism, and gastric cancer. Therefore, the neonatal period is a critical period in terms of factors affecting the development of healthy intestinal microbiota. The aim of this review to evaluate the microbiota and the factors affecting the development of the microbiota in newborns.