Canned food is better than no food Its ready to eat. But keep a few things in mind. http://articles.mercola.com/sites/articles/archive/2013/06/10/9-unhealthy-foods.aspx Some food are healthier kept in glass bottles. Freeze dried food might be lighter to carry in a bug out situation – just add water.
Try to have a little bit of everything. Nothing beats fresh food from your garden.