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Summary An assessment of nutritional status using anthropometric and biochemical measurements was made during pregnancy in 8 European and 15 Asian women who produced babies which were light for gestational age. These results were compared with similar measurements in women of both races with normal or pathological pregnancies (hypertension or bleeding) who produced babies of normal size. European mothers of light for gestational age babies with one exception had pregnancies complicated by pathology. They were heavy and fat but apart from urinary peptide hydroxyproline (which was reduced), no other biochemical measurement was specifically associated with poor intrauterine growth. Asian mothers of light for gestational age babies mostly had pregnancies not complicated by obstetric pathology. They gained less weight and fat during the second trimester and during the third trimester, they had biochemical evidence of a poorer nutritional status. Some of the biochemical changes were also noted in pathological pregnancies even though the mothers gained weight and fat normally and had well grown babies.

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