Variously called, in different countries and by different expert committees: RDA, the Recommended Daily (or Dietary) Amount (or Allowance); RDI, Recommended Daily (or Dietary) Intake; RNI, Reference Nutrient Intake; PRI, Population Reference Intake; safe allowances. See appendices IV–VII.
Levels of intake below that at which health and metabolic integrity are likely to be maintained are generally taken as the average requirement minus twice the standard deviation. Variously known as Minimum Safe Intake (MSI), Lower Reference Nutrient Intake (LRNI), and Lowest Threshold Intake.
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