The present invention generally relates to the early prevention of overweight, obesity, excessive fat accumulation and/or associated metabolic disorders in infants or children. For example, the present invention relates to the prevention of overweight, obesity, excessive fat accumulation and/or associated metabolic disorders in infants or children through appropriate maternal nutrition for women desiring to get pregnant and/or during pregnancy and/or lactation. Embodiments of the present invention relate to the Vitamin B2 for use in the prevention of overweight, obesity, excessive fat accumulation and/or associated metabolic disorders in the offspring, wherein the vitamin B2 is administered to women desiring to get pregnant and/or to the mother during pregnancy and/or lactation and to maternal food compositions that can be used for this purpose.