Perishability is the extent to which an item is perishable, meaning it has a short shelf life and deteriorates quickly during storage. Perishable foods, like milk, eggs, meat, fish, and numerous fruits and vegetables, are vulnerable to microbial growth, enzymatic changes, and moisture loss because of their high water activity and nutrient content. In food science and logistics, perishability dictates the need for refrigeration, rapid distribution, protective packaging, and careful stock rotation. Managing perishability is central to reducing food waste, ensuring safety, and maintaining quality: temperature control, modified atmospheres, and preservation treatments are all applied to slow deterioration and extend the usable life of perishable products.