Complex sentence: The Fast Mimicking Diet is a diet developed by the Longevity Institute, School of Gerontology, and Department of Biological Sciences, University of Southern California which allows users to receive the benefits of a prolonged fast without the risks.
Split into simpler sentences: The Fast Mimicking Diet is a diet developed by the Longevity Institute, School of Gerontology, and Department of Biological Sciences, University of Southern California. The diet is designed to induce the benefits of a prolonged fast without the risks.