Potential confounding factors associated with
diarrhoeal disease (p < 0.10) were included in a multivariate model
where infant feeding was the main exposure.
There is consistent evidence of a protective effect of exclusive breast feeding against
diarrhoeal disease in the first 4 — 6 months of life.4 Likely causes are the immune properties of breast milk and less exposure to pathogens in contaminated milk, food, bottles, or teats.5 Contamination and inadequate sterilisation pose less of a problem in developed than developing countries, and this explains the greater protection of breast feeding in developing countries
where poverty, poor hygiene, and infectious
diseases are common.