Is there a difference in nutritional values among fresh, frozen, and canned vegetables and fruits?

　　Yes, but they can all be good choices. Fresh foods are usually thought to have the most nutritional value. But frozen foods can often be more nutritious than fresh foods because they are often picked ripe and quickly frozen (whereas fresh foods may lose some of their nutrients in the time between harvesting and eating). Canning is more likely to reduce the heat-sensitive and water-soluble nutrients because of the high heat that must be used. Be aware that some fruits are packed in heavy syrup, and some canned vegetables are high in sodium (salt). Choose vegetables and fruits in a variety of forms, and pay attention to the label information.