Seasonal Variation of Cholesterol in Serum of Men and Women

Abstract

Serum cholesterol concentrations of younger men and women, older men and women and pregnant women were determined at various intervals. Within hours, days or weeks, fluctuation in individual values appeared to be random and was not influenced markedly by the magnitude of the mean. The mean serum cholesterol concentration of every older woman increased during the warmest season of the year in comparison with the cooler seasons, whereas the group mean for the older men was greatest during the late winter and early spring months. It is suggested from these results that seasonal variation in serum cholesterol concentration may be sex-related.