Controlled studies demonstrate that products and related methods using soy related peptides lower total and LDL cholesterol levels in individuals. In one exemplary embodiment of the present disclosure, a product containing an effective amount of lunasin peptides that lowers cholesterol levels in an individual that consumes the lunasin peptides is provided. In another exemplary embodiment of the present disclosure, a composition containing an effective amount of lunasin peptides or lunasin peptide derivatives and one or more enzyme inhibitors is provided. In a related exemplary embodiment of the present disclosure, a method for lowering or reducing cholesterol levels in an individual is provided where a product containing an effective amount of lunasin peptides to an individual is provided and a claim that the product lowers or reduces cholesterol, total cholesterol, LDL cholesterol or lipid levels in an individual that consumes the composition is made.