[Complication of a vegetarian diet in a breast-fed girl (author's transl)].

A case is presented of megaloblastic anemia with metabolic acidosis. The baby was eleven months old. She was strictly fed with human milk from a vegetarian mother. Baby's and mother's B 12 serum levels were low. Baby's weight and neurological development were retarded. Complications included acido-cetosis, coagulation disorder and liver disorder. All these problems were corrected by cobalamine supplementation. X-rays also disclosed bone demineralization.