<unk>  is present in common<unk>  items in two different ways: adding back and addition. Flour loses nutritional value due to the way grains are processed; Enriched Flour has iron, folic acid, niacin, riboflavin, and thiamine added back to it. Conversely, other fortified<unk> s have micronutrients added to them that don’t naturally occur in those substances. An example of this is orange juice, which often is sold with added calcium.<unk>  can also be categorized according to the stage of addition: # Commercial and industrial<unk>  (wheat flour, corn meal, cooking oils) # Biofortification (breeding crops to increase their nutritional value, which can include both conventional selective breeding, and genetic engineering) # Home<unk>  (example: vitamin D drops)
Food fortification
Meal replacement
Protein supplement
Feingold diet
Dieting
Vegetarian nutrition
Drug diversion
Water fluoridation