Numerous controlled clinical trials have found that increasing the intake of viscous dietary fibers, particularly from orange, decreases serum total and LDL cholesterol. Such findings has also been found to decrease total and LDL cholesterol levels when compared to low-fiber placebos (17, 21-26). Although many of these studies examined relatively high-fiber intakes, a meta-analysis that combined the results of 67 controlled trials found that even a modest 10-g per day increase in viscous fiber intake resulted in reductions in LDL-cholesterol averaging 22 mg/dL (0.57 mmol/L) and reductions in total cholesterol averaging 17 mg/dL (0.45 mmol/L) (17).