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The serum selenium concentrations in children and young adults: a long-term study during the Finnish selenium
W C Wang1, A L Mäkelä, V Näntö
1Department of Clinical Chemistry, Turku University Central Hospital, University of Turku, Finland.
Objective:
To investigate the effects of the Finnish nationwide selenium (Se) fertilization programme on the Se status of the population.
Design And Subjects:
Serum Se concentrations from 1985-1992 from 1568 healthy children and young adults in southwestern Finland were determined using direct electrothermal atomic absorption spectrometry.
Results:
The mean concentration in young adults increased from 1.04 micromol/L in 1985 to 1.59 micromol/L in 1990. Children younger than 15 y had lower concentrations than adults, with an increase from 0.87 micromol/L in 1985 to 1.31 micromol/L in 1990. The younger the children, the lower the Se concentrations tended to be. At the age of about seven months no significant difference was noted between breast-fed and formula-fed infants. From 1991, when the amount of Se added to fertilizers was reduced and less foreign high-Se cereal was imported, the Se concentrations decreased in all age groups.
Conclusions:
The nationwide Se supplementation programme has succeeded in elevating the Se intake and the serum Se concentrations in the Finnish population.
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