Fortified food :

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.

‌Fortified foods have added vitamins, minerals, and other micronutrient.  Micronutrients are necessary for many important body functions. My body can’t make its own micronutrients. They need to come from my diet.