Isolated cranberry seed oil and components thereof, in a form suitable for use as a foodstuff, dietary supplement, or pharmaceutical composition, are disclosed. The isolated cranberry seed oil or compositions comprising one or a combination of components derived from the cranberry seed oil can be used as anticancer, hypocholesterolemic, antithrombotic, antioxidizing, antiatherogenic, antiinflammatory, and immunoregulatory agents. In addition, the invention features novel methods of extracting cranberry seed oil from cranberry seeds in a form suitable for adding to foodstuffs, dietary supplements, or pharmaceutical compositions.