/FoxO promotes gluconeogenesis and trehalose synthesis during starvation to support survival.

/FoxO is required to survive starvation in , but how FoxO promotes starvation resistance is unclear. We show that /FoxO restructures carbohydrate metabolism by driving carbon flux through the glyoxylate shunt and gluconeogenesis and into synthesis of trehalose, a disaccharide of glucose. Trehalose is a well-known stress protectant, capable of preserving membrane organization and protein structure during abiotic stress.