Inclusion Criteria:  Healthy infants 6-7 months of age. Gestational age 38-42 weeks Birth weight >2700 and <4200 gram Not suffering from a major congenital anomaly, severely stunted at birth, not having a thyroid problem, not suffered from prominent gastrointestinal diseases, severe diseases at the time of inclusion (severe pneumonia, severe dehydration, etc) Parents want to follow the study by signing the informed consent  Exclusion Criteria:  Subjects are in the severe disease condition at the time of recruitment Severe acute malnutrition Have conditions that will influence the nutritional status such as moderate to severe dehydration, organomegaly, edema.