title: Dietary intake of lead and blood lead concentration in early infancy.
abstract: Under circumstances of low prenatal exposure to lead and low nondietary exposure to lead postnatally, four breast-fed infants and 25 formula-fed infants were studied to determine the relation between dietary intake of lead and blood lead concentration. From 8 through 111 days of age, the mean dietary intake of lead by the formula-fed infants was 17 micrograms/day (3 to 4 micrograms/kg/day), and intake of lead by the breast-fed infants was estimated to be only slightly greater. The mean blood lead concentration at the age of 112 days was 6.1 micrograms/dL. From 112 through 195 days of age, 17 infants continued in the study: ten received a mean dietary intake of lead of 16 micrograms/day, and seven received a mean intake of 61 micrograms/day. At 196 days of age, mean blood lead concentrations were significantly different (7.2 and 14.4 micrograms/dL, respectively).
mesh_terms: D000367:Age Factors; D000393:Air Pollutants / Q000032:analysis; D001800:Blood Specimen Collection; D001942:Breast Feeding; D004391:Dust / Q000032:analysis; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007223:Infant; D007225:Infant Food; D007231:Infant, Newborn; D007854:Lead / Q000008:administration & dosage* / Q000032:analysis / Q000097:blood
chemical_list: D000393:Air Pollutants; D004391:Dust; D006454:Hemoglobins; D007854:Lead