Abstract
Eighteen hundred fasting plasma samples and 24h urines were analyzed for hGH, hPRL, 17 KS, 17 OHCS and 11 OHCS and the 1 evel s correlated with four degrees of geomagnetic activity (GMA). It was found that hGH, hPRL, 17 KS and 11 OHCS fluctuate in accordance with GM,~; hGH and 11 OHCS were decreased and hPRL and 17 KS were increased during active or stormy GMA periods.