Combination therapies for treating obesity or related eating disorders and/or reducing food consumption are described herein which comprises administering a therapeutically effective amount of a cannabinoid-1 (CB-1) receptor antagonist and an intestinal-acting microsomal triglyceride transfer protein inhibitor (MTPi) to an animal in need of such treatment. The CB-1 receptor antagonist and intestinal-acting MTPi may be administered separately or together.