The RDA for Trace Minerals

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The following table lists the RDAs for the trace minerals.

Mineral

RDA

Boron

None available

Chromium

50 to 200mcg

Cobalt

Copper

1.5 to 3 mg

Iodine

150 mcg

Iron

10 to 15 mg

Manganese

2.5 to 5.o mg

Molybdenum

75 to 250 mcg

Selenium

55 to 70 mcg

Vanadium

Zinc

12 to 15 mg

Many foods that would normally be expected to supply the trace minerals unfortunately do not. Many soils are geographically deficient in certain minerals and therefore foods grown in them lack those nutrients. A similar problem can be caused by over farming or poor soil management.

Many areas are deficient in selenium, a very important trace mineral.

Bland, J. 1996, Contemporary Nutrition . J & B Associates.

Davies, S. and A. Stewart., 1997, Nutritional Medicine . Pan.

Holden, S., Hudson, K., Tilman, J. & D. Wolf, 2003, The Ultimate Guide to Health from Nature . Asrolog Publication.

Pressman, A. and S. Buff, 2000, The Complete Idiot's Guide to Vitamins and Minerals . (2nd Ed.) Alpha Books.

Soothill, R. 1996, The Choice Guide to Vitamins and Minerals . A Choice Book Publication.

Sullivan, K. 2002, Vitamins and Minerals: A Practical Approach to a Health Diet and Safe Supplementation . Harper Collins.

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Remember that some known trace elements don't yet have a recommended allowance as this amount is simply not known at this time.

To ensure you obtain all the mineral supplements needed for good health we recommend Total Balance .