Fortified foods are those that have nutrients added to them that don’t naturally occur in the food. These foods are meant to improve nutrition and add health benefits. For example, milk is often fortified with vitamin D, and calcium may be added to fruit juices.
An enriched food means that nutrients that were lost during processing are added back in. Many refined grains are enriched. Wheat flour, for example, may have folic acid, riboflavin, and iron added back in after processing. This is intended to restore its original vitamin levels.