What is the addition of nutrients that are not naturally present?

Is 5ft 4 small for a just turned 15 year old girl? If you were to walk the earth how many miles have you walked? What is the smallest amount of a nutrient that is consumed over a prolonged period that maintains a specific function called? Is electrofulguration treatment harmful for skin? Can you eat bread or rice on Atkins diet? What are opinions on Acai Berry? Which food contain more protein? What should be avoided with ginseng? How could you make a wrap to lose weight? What happens if you snort vitamins? How many calories is in 2 oz of tuna in water? How many carbs in a chili relleno? What should a 5ft 2 inch woman weigh? What is a normal weight for a 16 yr old 4'9 girl? Is it overweight to be 7 stone at 12? What happens if you eat too little iron? What is the primary function of proteins in the diet? How are chicken McNuggets made? How tall is Stacy Ann Ferguson? Im 15years old 56kg 164cm and can run 2.5km in 958min is that good?