Fortification is the practice of deliberately increasing the content of an essential micronutrient, i.e. vitamins and minerals (including trace elements) in a food, so as to improve the nutritional quality of the food supply and provide a public health benefit with minimal risk to health.Jul Fortification doesn't make them inherently healthy or good for you. Many younger children are also at risk of overdosing on some added vitamins, according to a report from the Environmental Working Group (EWG).