The 48th Annual International Orthomolecular Medicine Today Conference, presented by the International Society for Orthomolecular Medicine, brought together more than 250 leading clinicians and researchers from 15 countries around the world. The conference was held from May 31 – June 2, 2019, at the Fairmont Hotel Vancouver in Canada. The program featured 13 presentations on the topics of orthomolecular oncology, immunology, and general medicine.