The terms enriched and fortified are often found on food labels. Both terms mean that vitamins or minerals have been added to the food. The difference in the terms is that enriched foods have vitamins or minerals added back to them. Fortified foods have vitamins or minerals added that weren't originally present. Grain products that lose some vitamins and minerals during processing are enriched with some of these nutrients to restore the original nutritional values.
Milk is fortified with vitamin D to increase the absorption of the calcium and phosphorous.
In January of 1998, grain products were fortified with folic acid to help reduce the risk of birth defects. Whether it's enriched or fortified, adding nutrition to food makes it easier for you to get the vitamins and minerals you need.