Canned tuna may be safely stored for several years as long as the cans are not bulging, leaking, or otherwise damaged, and the seams around the lid are intact. (If these conditions are present, the product should not be consumed.) Palatability, however, may be affected over prolonged time periods, especially under adverse storage conditions such as high temperature. It is recommended, therefore, that canned tuna inventories be rotated every one to two years to assure the best quality.