Autophagy(self-eating)is a self-degradation process essential for survival,differentiation,development,and homeostasis.Conceiving that a process of cellular self-eating could be beneficial may appear bewildering.In its simplest form,however,autophagy is probably a single cell’s adjustment to starvation; the cell is forced to break down part of its own reserves to keep alive until circumstances improve(Mizushima and Klionsky,2007).