Dietary Reference Intake
（重定向自Recommended Daily Allowance）
The Dietary Reference Intake (DRI) is a system of nutrition recommendations from the Institute of Medicine (IOM) of the National Academies (United States). It was introduced in 1997 in order to broaden the existing guidelines known as Recommended Dietary Allowances (RDAs, see below). The DRI values differ from those used in nutrition labeling in the U.S. and Canada, which uses Reference Daily Intakes (RDIs) and Daily Values (%DV) based on outdated RDAs from 1968.