Angiopoietin-like protein (ANGPTL)3/8 complexes and antibodies are disclosed, where the antibodies bind to and thereby neutralize ANGPTL3/8 complexes. Pharmaceutical compositions also are disclosed that include one or more anti-ANGPTL3/8 complex antibodies herein in a pharmaceutically acceptable carrier. Methods of making and using the same also are disclosed, especially for increase lipoprotein lipase activity and lowering triglycerides. In this manner, the compounds and compositions may be used in treating lipid metabolism-related and glucose metabolism-related diseases and disorders.