Overnight pineapple is generally edible when properly preserved, but it is not recommended to consume overnight pineapple that has gone bad. Whether an overnight pineapple is edible or not depends on the environment in which it is kept and the degree of appropriateness of preservation. If preserved at low temperatures, pineapples can be eaten if they are not spoiled. However, if the ambient temperature is too high or the pineapple has been infected by various kinds of spoilage bacteria, it should not be eaten in order to avoid abdominal pain, diarrhea, nausea, vomiting and other food poisoning symptoms. Every 100 grams of pineapple contains 50 calories, 13.12 grams of carbohydrates, 0.54 grams of protein, 0.12 grams of fat, 13 milligrams of calcium, 47.8 milligrams of vitamin C, 0.29 milligrams of iron. Moderate intake of pineapple can provide the body with many nutrients to meet the needs of the body’s functioning, which is richer in carbohydrates and vitamin C. It is recommended to pick fresh and unaltered pineapples for consumption and consume them as soon as possible after purchase. If the pineapple is not consumed, it is recommended to keep it in the fresh layer of the refrigerator for proper storage. Soak pineapple in lightly salted water before consumption to minimize the presence of bromelain and reduce irritation to the skin and mucous membranes.