The Relationship Between Infants' Birth Weight And Maternal Dietary Intake & Hormones In The Cord Blood

In order to probe into the relation between infants' birth weight and maternal dietary intake & hormones in the cord blood, 86 pregnant women were chose as our research cases. We took down their 24-hour meal record for continuous 3 days in the 3rd trimester, and record 3 days' diet during the 1st and 2nd trimesters by recalling investigation. Meanwhile, We gathered the cord blood sample, and the level of Gas, GH, LH, FSH, T in the cord blood were measured by radioimmunoassay.These subjects were grouped in normal group(45 cases),IUGR group(21 cases) and macrosomia group(20 cases). The daily nutrient intake during the 3 trimesters was calculated and the level of Gas, GH, LH, FSH and T in the cord blood was measured. An analysis of ANOVA and multiple regression analysis was used.Results: The intake of energy, carbohydrates, protein, zinc and selenium in macrosomia group was markedly higher than that in the normal group; and the intake of protein, selenium, riboflavin, cholesterol and animal foods in IUGR group was markedly lower than that in the normal group.The level of GH and Gas in the IUGR group was markedly higher than the normal group (P<0.05) ,and the level of Gas in macrosomia group was markedly lower than in the normal group (P<0.05) . Birth weight was positively correltive with protein intake, weight before the gestation, and gestational age (R~2=0.454), but was negative with Gas level in the cord blood (R~2 =0.046).The level of Gas and FSH was correlated with carbohydrate intake.Conclusion: The intake of protein in the 3rd trimester, weight before the gastation, and gastation age influence infant's weight.