Home / About Vitamins / Trace Mineral RDA
The following table lists the RDAs for the trace minerals.
| Mineral | RDA |
| Boron | None available |
| Chromium | 50 to 200mcg |
| Cobalt | None available |
| 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 | None available |
| 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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