Canned foods are as nutritious as fresh and frozen foods. Canned foods are equally nutritious to their fresh and frozen counterparts when prepared for the table. Canned ingredients are picked at their peak of ripeness and packed within hours. Only a few dozen simple, basic foods come in cans, such as beans, peaches and soup. Today, more than 1,500 food items are available in cans.
Canned foods are always high in sodium.
In response to changing consumer preferences, canned food manufacturers have significantly reduced the sodium content and are canning products without salt for consumers who prefer them. If I want to avoid preservatives, I should eat only fresh fruits and vegetables. Canned fruits and vegetables use no chemical preservatives at all. The home canning process is much different than today's commercial canning process. Except for the fact that Grandma used glass jars rather than steel cans, today's commercial canned foods are naturally preserved by cooking, vacuum-sealing, then cooling.