Effects of 4- and 6-h time-restricted feeding in adults with obesity. BIO: Dr Cienfuegos is a Clinical Assistant Professor in Kinesiology and Nutrition at the University of Illinois at Chicago. Dr. Cienfuegos has a Ph.D. in human nutrition and has been studying intermittent fasting for the last seven years. Dr. Cienfuegos is an emerging expert in this field, with more than 30 publications in the most prestigious journals, such as Cell, Annual Reviews, and Nature. She has participated in several national and international scientific conferences and trained other professionals worldwide. Dr. Cienfuegos is the Co-I on two R01s (R01DK119783 and R01DK128180), examining the health benefits of fasting.  Description of talk: Data from her Ph.D. work examining the weight loss efficacy of shorter TRE windows (4-h and 6-h TRE) was published in Cell Metabolism and received substantial media attention. She has extensive hands-on experience designing and coordinating R01-funded clinical trials and leading large research teams during recruitment, counseling, and data analysis. This seminar will focus on these original investigations.