LOW CALORIE FAT MATERIALS THAT ELIMINATE LAXATIVE SIDE EFFECT The present invention is a composition of matter that is useful as a substitute for triglyceride fats in low calorie fat-containing food products, and as a method for reducing serum cholesterol comprising an edible, wholly or partially nondigestible low calorie fat material having a nonNewtonian pseudoplastic rheology at body temperature. In particular, at 100.degree.F (37.8.degree.C) the fat material has: (a) a viscosity of at least about 2.5 poise at a shear rate of 800 seconds-1, a viscosity of at least about 4.0 poise at a shear rate of 100 seconds-1, and a viscosity of at least about 25.0 poise at a shear rate of 10 seconds-1; (b) a yield point of at least about 2,500 dynes/cm2; (c) a thixotropic area of at least about 0.20 x 106 dynes/cm2sec.; and (d) a liquid/solid stability of at least about 50%. Examples of specific low calorie fat materials that can be used in this invention include sugar fatty acid poly esters, polyglycerol fatty acid po
