"It has been known for more than 30 years that children who continue at least partial breast feedings until age 3 have lower incidences of most all infectious diseases as well as asthma, allergies, and eczema. Since that is not likely to happen with the Western lifestyle, starting an infant on probiotics, fish oil, and vitamin D may help prevent this microbial shift, but I still think food and stress are primary shifters of the microbiome.
This is yet one more study that highlights the importance -- and complexity -- of gut bacterial composition and development in early life. As we say, optimal digestive health is the foundation upon which total body health is built."
Leonard Smith: Gut Bacteria and Childhood Eczema