Editor,—Divergences in existing guidelines on the prevention and treatment of cow's milk allergy (CMA) in infants1-3 seemed settled when a joint statement by the committees of ESPACI/ESPGHAN appeared inADC. 4 However, we take exception to some of the assumptions, which have been left open to challenge from both nutritional and allergological points of view. Our concern is that lactose free diets from birth may cause neurological problems in healthy children. …