Dietary Reference Intake

From Wikipedia, the free encyclopedia

Dietary Reference Intake (DRI) is a set of guidelines set up in 1997 to give more detailed guidance than the Recommended Dietary Allowance system which preceded it. It was a collaboration between the USA and Canada.

The DRI is composed of:

Estimated Average Requirements (EAR), expected to satisfy the needs of 50% of the people in that age group.
Recommended Dietary Allowances (RDA)
Adequate intake (AI), where no RDA has been established
Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin D) that can be harmful in large amounts.

RDA/AIs and ULs for a 25-year old male include:

Nutrient    RDA/AI            UL     
Vitamin A      900         3,000     mcg/day 
Vitamin C       90         2,000     mg/day
Vitamin D        5            50     mcg/day 
Vitamin E       15         1,000     mg/day
Vitamin K      120                   mcg/day 
Folate         400         1,000     mcg/day    
Vitamin B6       1.3         100     mg/day
Vitamin B12      2.4                 mcg/day 
Calcium       1000          2500     mg/day
Chloride      2300          3600     mg/day
Chromium        35                   mcg/day 
Copper         900        10,000     mcg/day 
Fluoride         4            10     mg/day
Iodine         150          1100     mcg/day
Iron             8            45     mg/day
Magnesium      400                   mg/day
Manganese        2.3          11     mg/day
Molybdenum      45          2000     mcg/day
Phosphorus     700          4000     mg/day
Potassium     4700                   mg/day
Selenium        55           400     mcg/day 
Sodium        1500          2300     mg/day
Zinc            11            40     mg/day