Inclusion Criteria:  Singleton birth Gestational age of 37-42 weeks (36 weeks and six days is considered 36 weeks gestational age) Birth weight of 2500 g (5 lbs 8 oz) or more Parent(s) or legal guardian agrees not to enroll infant in another interventional clinical study while participating in this study Signed informed consent obtained for infant's participation in the study Signed authorization obtained to use and/or disclose Protected Health Information for infant from birth through 18 months of age  Infants receiving formula:  3 to 60 days of age at randomization, inclusive (day of birth is considered day 0) Exclusively receiving infant formula for at least 72 hours prior to randomization Parent(s) or legal guardian has full intention to exclusively feed study formula during the study period  Infants receiving human milk:  150-180 days of age at registration, inclusive (day of birth is considered day 0) Mother has intention to predominately provide mother's own breast milk through at least 10 months of age  Exclusion Criteria:  Contraindication to magnetic resonance imaging (MRI) First degree relative with known autism, intellectual disability, schizophrenia, or bipolar disorder or an inherited disorder of myelination Major pre- and/or perinatal issues (such as maternal pre-eclampsia, placental abruption, maternal alcohol or illicit drug use during pregnancy) Major delivery complications (such as neonatal hypoxia or neonatal illness requiring a greater than 2-day NICU stay) Infant is immunocompromised (according to a doctor's diagnosis of immunodeficiency such as combined immunodeficiencies, DiGeorge syndrome, Wiskott-Aldrich syndrome, severe congenital neutropenia and secondary immunodeficiencies linked to HIV infection, Down syndrome or others) 5 minute APGAR < 7 Infant was born large for gestational age (LGA) (as confirmed by the hospital birth records) from mother who was diabetic at childbirth Infant has been identified with inadequate weight gain or failure to thrive by a health care professional (HCP) History of underlying metabolic or chronic disease; congenital malformation; or any other condition which, in the opinion of the Investigator, is likely to interfere with: the ability of the infant to ingest food, the normal growth and development of the infant, or the evaluation of the infant Parent(s) or legal guardian unable to speak English at a level to provide informed consent  Infants receiving formula:  • Evidence of feeding difficulties or history of formula intolerance, such as vomiting or poor intake at time of randomization  Infants receiving human milk:  • Use of infant formula and/or donor milk more than three times per week prior to registration