Weekly Variations in Serum Cholesterol Levels of Monkeys

Abstract
Six monkeys maintained a diet essentially free of cholesterol were fed 1 g sitosterol daily for 6 weeks, and serum cholesterol levels were assayed before, during and after the feeding period. The data present no clear-cut evidence that the sitosterol lowered the level of serum cholesterol. The animals all exhibited wide swings in weekly cholesterol levels not related to sitosterol intake.