The present invention relates to a composition comprising one or more mineral nutrients selected from iron, zinc, calcium, phosphorus, copper, magnesium, iodine, manganese, chloride, potassium, sodium, selenium, chromium, and combinations thereof, for use in promoting, supporting or optimizing one or more of the following: (i) de novo myelination; (ii) brain structure; (iii) brain connectivity; (iv) intellectual potential; (v) cognitive potential; (vi) learning potential; and (vii) cognitive functioning in an offspring of a female subject, wherein said composition is for administration to the female subject.