Use of infant formula has been cited for numerous increased health risks. Studies have found infants in developed countries who consume formula are at increased risk for acute otitis media, gastroenteritis, severe lower respiratory tract infections, atopic dermatitis, asthma, obesity,[44] type 1 and 2 diabetes, sudden infant death syndrome (SIDS), eczema and necrotizing enterocolitis when compared to infants who are breastfed.[45][46][47][48] Some studies have found an association between infant formula and lower cognitive development, including iron supplementation in baby formula being linked to lowered I.Q. and other neurodevelopmental delays;[49][50] however other studies have found no correlation.[45]