RDA

Recommended Dietary Allowance of nutritional elements

RDA, or known by its full name, the Recommended Daily Allowance, is busy being revised and will be called the Dietary Reference Intake (DRI) and is a collaborative effort between the USA and Canada.

RDA

This stands for the Recommended Dietary Allowance, although many refer to it as the Recommended Daily Allowance.

Until publication of the new DRI, we herewith refer to the old RDA schedule, with some of the new DRI worked in, as a point of reference only.

On this page:

• fat soluble vitamins,

• water soluble vitamins,

• minerals and other nutritional elements.

On a different page:

• amino acids.

The RDA represent the establishment of a nutritional norm for planning and assessing dietary intake, and are the levels of intake of essential nutrients considered to be adequate to meet the known needs of practically all healthy people.

These figures were first published in 1943 and have been updated and expanded as data became available.

When introducing the new revision of the RDA in 1974, Dr. Alfred E. Harper, the then Chairman of the Committee on Dietary Allowances, Food and Nutrition Board said "...However requirements differ with age and body size; among individuals of the same body size owning to differences in genetic makeup; with the physiologic state of individuals - growth rate, pregnancy, lactation; and with sex. .."

With this in mind, herewith the tables as they stand at the moment:

Fat Soluble Vitamins*

* first figure refers to the old RDA listing while the second figure refers to the newer DRI listing

Water Soluble Vitamins*

* first figure refers to the old RDA listing while the second figure refers to the newer DRI listing

Minerals and others*

* first figure refers to the old RDA listing while the second figure refers to the newer DRI listing - age groups have also been changed on certain nutrients to range from 9-13, 14-18,19-30,31-50, 51-70 and 71+ - figures above merely for illustration and information.

Please be advised that these tables above must not be used to treat or diagnose - they are merely brought to you for information, in order to give you a better understanding on the dynamics involved, and the changing importance of vitamins and nutrition as well as their importance in maintaining optimum health.

RDA for essential amino acids

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Nutritional information

Here are some information page on which you can read more about a specific nutrient and the role it plays in our general well-being. Please note - we do not use or sell all of these compounds but include the information for the benefit of our clients and visitors. To visit our selection of vitamin products please click here.