The efficacy and effects of phytosterols mainly include cholesterol-lowering, antioxidant effects, immunomodulatory effects and so on. 1. Reduce cholesterol: phytosterols have multiple hydrophobicity greater than cholesterol, so phytosterols in the intestinal lumen can reduce the binding capacity of cholesterol and bile acid particles through competition, so that cholesterol can not be transported to the absorption site of the small intestinal microvilli, in order to inhibit cholesterol absorption. 2. Antioxidant effect: oxidative damage refers to the imbalance of redox homeostasis of cells and tissues caused by excessive generation of free radicals in cells or insufficient scavenging ability of free radicals, phytosterols have strong antioxidant ability which can effectively reduce oxidative damage. 3. Immunomodulatory effect: the cholesterol-lowering effect of phytosterols helps to reduce the oxidation of low-density lipoprotein, to avoid the aggregation of inflammatory cells in the arterial endothelium, which reduces the production of inflammatory cytokines and reactive oxygen species, and thus plays an immunomodulatory role. It is recommended that patients can consume phytosterol-rich foods, such as beans and cereals, in moderation in their daily lives.