17/01/2008 - The cholesterol-lowering effects of soy protein may by located in the liver, suggests new research from Korea University and Nestlé Research Center that fills in the gaps in our understanding of the heart healthy benefits of soy. Soybean protein hydrolysate (SPH) was found to stimulate the low-density lipoprotein receptor (LDL-R) transcription in liver cells, report the researchers in the Journal of Agricultural and Food Chemistry.