Hyodeoxycholic acid (HDCA; 1.25% (wt/wt)) sodium obviously decreases fat mass and increases lean mass but does not raise the serum levels of any organ toxicity markers in LDLRKO mice. Hyodeoxycholic acid inhibits atherosclerotic lesion formation in LDLRKO at multiple sites, improves plasma lipoprotein profiles, decreases plasma glucose level and intestinal cholesterol absorption efficiency and increases daily cholesterol excretion through fecal output. Hyodeoxycholic acid sodium also improves HDL function as measured by a cholesterol efflux assay[2].