The main concern is exposure to substances such as lead, organic solvents, pesticides and antimitotics, as some of the substances are excreted through the milk, and the child is assumed to be particularly sensitive.
L'attention doit porter essentiellement sur l'exposition à des substances telles que plomb, solvants organiques, pesticides et antimitotiques, car certaines se retrouvent dans le lait, et l'enfant y est présumé particulièrement sensible.