<prompt> All are complication of formula fed baby over human milk fed baby except:Necrotizing enterocolitisOtitis mediaHypocalcemiaVit K deficiency  <response>: Formula feeds contain a host of vitamin and minerals, as well as trace elements zinc, mangnese, copper, iodine and electrolytes.In formula feeds vitamin K is added in higher levels than in breast milk to reduce the risk of hemorrhagic diseases in new born. So, vitamin K deficiency can never be a complication of formula fed babies.Now lets see what Ghai 6e, p 164, 331, 177 has to say on the rest of options.Option a i.e. Necrotizing enterocolitisAlmost all patients of neonatal necrotizing enterocolitis NEC are artificially fed prior to the onset of illness. Breast milk is protective for NEC.Ghai 6e, p 164Option b i.e. Otitis mediaOtitis media is one of the most common infections of early childhood. Anatomic features which make this age group particularly susceptible to ear infection include shorter, more horizontallyplaced and compliant eustachian tube, which permits reflux of nasopharyngeal secretions into the middle year. A high incidence of bacterial carriage in the adenoids may also contribute to the frequency of otitis media in children. Other risk factors include exposure to cigarette smoke, over crowding, bottle feeding, cleft palate, allergic rhinitis, Downs syndrome and disorders of mucocilliary transport.Ghai 6e, p 331Option c i.e. HypocalcemiaIn the neonatal period there is transient hypoparathyroidism. As a result, less phosphate is excreted in the urine. Human milk is low in phosphate, but cows milk is rich in phosphate. Immature parathyroid in the neonates can not easily cope with excess phosphate in cows milk leading to hypocalcemia in top fed babies.Ghai 6e, p 177 