What does it do? Silicon is a trace mineral. The functions of silicon are not well understood, although silicon probably plays a role in making and maintaining connective tissue. Silicon is present in areas of bone that are undergoing mineralization, which indicates this mineral might be important for normal bone function; however, evidence for this has not been confirmed in humans.1
Where is it found? Good dietary sources for silicon include whole-grain breads and cereals, root vegetables, and beer. A form of silicon called silicates is added to some processed foods.
Silicon has been used in connection with the following condition (refer to the individual health concern for complete information):
| Rating | Health Concerns |
|---|---|
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Osteoporosis Sprains and strains |
Reliable
and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies
suggesting a health benefit or minimal health benefit. An herb is primarily supported by traditional use, or
the herb or supplement has little scientific support and/or minimal health benefit. |
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How much is usually taken? Because silicon has not been established as essential, a recommended intake has not been established. The average diet is estimated to provide 5–20 mg of silicon per day—an amount that appears adequate. When used as a supplement, common amounts range from 1 to 2 mg per day.
1. Nielsen FH. How should dietary guidance be given for mineral elements with beneficial actions or suspected of being essential? J Nutr 1996;126:S2377–85 [review].