This technology includes a novel vaccine for forming autoantibodies against apoC-III, a plasma enzyme that inhibits lipolysis. The vaccine can possibly be used to treat patients with high triglycerides and are at risk for pancreatitis and cardiovascular disease. This disclosure describes an ApoC3 immunogen that includes an antigenicApoC3 peptide linked to a bacteriophage virus-like-particle (VLP) immunogenic carrier.