Hyejin Ahn is Postdoctoral Researcher in medical nutrition and has been Academic Research Professor of Department of Gerontoly (AgeTech-Servlce Convergence Major) at the KyungHee University. She received her Bachelor degree in the field Food and Nutrition from Sookmyung Women's University and completed Master degree and Ph.D. In Medical Nutrition at the KyungHee University, Korea. Her studies focus on bone health and nutrition such as sugar-sweetened beverage, fructose, isoflavone and caloric restriction. Several articles were published in journals such as Nutrition Journal, Nutrition and Nutrition Research.