Abstract
Blood serum selenium levels were measured in 576 healthy middle aged adults (40-60 yr, 255 men and 321 women) residing in both urban and rural areas in four districts of Slovakia. Serum selenium was determined by electrothermal AAS. The mean (+/- SD) serum selenium concentration was 0.852 +/- 0.335 mumol/L, ranging from 0.219-2.30 mumol/L. A large proportion of the individuals (19.62%) exhibited serum selenium levels under 0.57 mumol/L (45 mumol/L). There was no significant correlation between serum selenium concentration and age, sex, and smoking status. There were significant differences between districts. The lowest mean (+/- SD) serum selenium was 0.664 +/- 0.269 mumol/L, the highest mean serum selenium (+/- SD) was 0.975 +/- 0.361 mumol/L. This differences could probably be attributed to the selenium content in the soil of the different areas, which would contribute to the average daily selenium intake. In comparison with serum selenium levels in other European countries, the concentrations of selenium in the Slovak population are relatively low.
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