Rapid Nutrition PLC announced that international brand, retail and operations leader Carl Seletz has joined its advisory board. Seletz most recently served as Chief Global Officer for global health and nutrition provider GNC, where he championed the company's retail, wholesale, distribution, digital, ecommerce and business development functions for the international division, spanning more than 2,100 locations in more than 60 countries. Prior to that, he was GNC's Senior Vice President, International, responsible for business development and managing company-owned and franchise operations for the international enterprise.