TORONTO, CANADA - MAY 07, 2014: Different types of vitamins and supplements on shelves in a pharmacy. According to studies, North America and Asia lead vitamin and supplement usage in the world. Shutterstock Image - TORONTO, CANADA - MAY 07, 2014: Different types of vitamins and supplements on shelves in a pharmacy. According to studies, North America and Asia lead vitamin and supplement usage in the world. - ID: 220512667