<human>:  What is the difference between all-natural and organic foods?
<bot>: The major difference between all-natural and organic foods is that organic foods are produced and certified according to set standards. These standards, which are set and regulated by an agency, mandate that the food source is grown without the use of synthetic pesticides, hormones and antibiotics, and are also free of genetically modified organisms. On the other hand, all-natural foods are not certified and may contain ingredients that are not necessarily organic, such as artificial flavors, colors, and preservatives.