Specifically designed to fulfill the nutritional needs of aging cats requiring fewer calories than more active adult cats. Lower caloric density and higher food bulk help reduce the glycemic index and lower the body's weight set point of older cats. Such underfeeding with a micro-nutrient dense diet the design of GeriatrxÖ has been demonstrated to extend the life-span in a variety of species. GeriatrxÖ is also designed for use with degenerative disorders such as kidney, heart, and liver disease which perhaps require lower levels of sodium, higher quality protein sources, and increased micronutrient density.