Lead concentrations in early human milk of urban and rural mothers.

The aim of this study was to determine and compare lead concentrations in breast milk between urban and rural women. Colostrum from 51 women living in the city of Thessaloniki (exposed to increased air lead concentration, 0.54 micrograms/m3) and from 40 women living in rural areas (exposed to significantly lower air lead concentrations) was analyzed by atomic absorption spectrometry. Urban women showed slightly higher lead concentrations (mean +/- SD: 0.090 +/- 0.029 micrograms/ml) than rural women (mean +/- SD: 0.084 +/- 0.024 micrograms/ml). This difference was not statistically significant. These results suggest that the lead content of human milk is not influenced by the concentrations of this environmental pollutant in the air.