Babies born to such mothers start out lacking the 'beneficial bacteria' (guardians) that protect a strong intestinal barrier . As a result, when complementary foods are introduced or proteins such as gluten and casein are consumed, the intestinal barrier fails to properly digest and defend against them, making them susceptible to severe leaky gut syndrome, infant colic, eczema, asthma, food allergies, and even developmental disorders such as autism spectrum disorder from infancy onwards.