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  • Title: Exclusive breast-feeding and weaning: effect on serum cholesterol and lipoprotein concentrations in infants during the first year of life.
    Author: Kallio MJ, Salmenperä L, Siimes MA, Perheentupa J, Miettinen TA.
    Journal: Pediatrics; 1992 Apr; 89(4 Pt 1):663-6. PubMed ID: 1557248.
    Abstract:
    The total serum cholesterol concentration of infants was investigated at birth (n = 193) and at the ages of 2 (n = 192), 4 (n = 192), 6 (n = 190), 9 (n = 188), and 12 months (n = 196). Concentrations of cholesterol--very-low-density lipoprotein (VLDL), low-density lipoprotein (LDL), high-density lipoprotein-2 (HDL2), HDL3--and apoprotein B were analyzed in 36 infants at 2, 6, 9, and 12 months of age. Serum cholesterol concentration rose significantly more slowly in the weaned infants compared with exclusively breast-fed infants. The mean difference in total serum cholesterol value between the exclusively breast-fed and weaned infants was largest at ages 2 (0.9 mmol/L, P less than .001), 4 (0.6 mmol/L, P less than .01), and 6 months (0.5 mmol/L, P less than .01). The LDL cholesterol concentration was lower in weaned infants compared with exclusively breast-fed infants at age 2 and 6 months; the mean difference in LDL cholesterol value was 0.9 mmol/L at age 2 months (P less than .001) and 0.7 mmol/L at age 6 months (P less than .025). Also, the apoprotein B concentration was lower in weaned infants; the mean difference was 24 mg/dL at age 2 months (P less than .01) and 30 mg/dL at age 6 months (P less than .05). The apoprotein B-LDL cholesterol ratio was stable and similar in both feeding groups through the year. The HDL2 cholesterol concentration was lower in the formula-fed than in breast-fed infants at 2 months of age while the VLDL and HDL3 cholesterol concentrations were independent of the diet.(ABSTRACT TRUNCATED AT 250 WORDS)
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