Dr. Joel Ramírez-Emiliano graduated from Universidad Michoacana de San Nicolás de Hidalgo, México in 1996. He obtained his M.Sc. degree in Experimental Biology in 1999 from the same university. In 2004 he obtained his Ph.D. in Experimental Biology from University of Guanajuato, Mexico. He has been a Postdoctoral fellow at CINVESTAV-Mexico (2005). Currently, Dr. Joel is a Professor-Investigator in the Department of Medical Sciences, Division of Health Sciences, Leon Campus, University of Guanajuato, Mexico, and is member of the National System of Investigators (SNI I). He is currently studying the pathophysiology of oxidative stress in animal models and in humans suffering from metabolic diseases. His interest is studying the effect of antioxidants (polyphenols, and some prebiotics and probiotics with antioxidant functions) on the control and / or treatment of oxidative damage caused by metabolic disorders.