The Recommended Dietary Intakes

(RDI), because they represent 98% of a nutrient considered adequate to meet the

known nutrient needs of practically all healthy people.

The Estimated Average

Requirements (EAR), because they reflect the average daily amount of a nutrient

that will maintain a specific function in half of the healthy people of a

population.

The Upper Level of Intake

(UL), because they are the maximum daily amount of a nutrient that appears safe

for most healthy people.

The Nutrient Reference

Values (NRVs), because they are a set of nutrient intake values for healthy

people in Australia and New Zealand.