Silicon and Bone Health: What the Evidence Shows

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A note before you read: This article is for educational purposes only and does not replace medical advice. Speak with a qualified healthcare professional before changing your supplement routine, especially if you have osteoporosis, kidney disease or take medication.

Silicon — not to be confused with silicone, the synthetic polymer — is a trace mineral that plays a biological role in connective tissue and bone metabolism. It’s rarely mentioned in bone health discussions, but its presence in bone and its role in collagen formation make it worth understanding.

Silicon’s Role in Bone

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Silicon is found in the organic matrix of bone, particularly in areas of active bone growth and remodeling. It appears to play a role in the formation of collagen — the protein scaffold of bone — and in the early stages of bone mineralization. Cell studies have found that silicon stimulates osteoblast activity and collagen type 1 synthesis, and animal studies have shown that silicon deficiency leads to reduced bone formation and poor connective tissue development.

Human epidemiological research has found positive associations between dietary silicon intake and bone mineral density, particularly in premenopausal women and men under 50.

Dietary Sources

Silicon is found in whole grains (oats, barley, brown rice), root vegetables, green beans, and beer (which has a notably high bioavailable silicon content due to the brewing process). Drinking water also contributes some silicon. Most people eating a whole-food diet get adequate silicon from food.

Should You Supplement?

Silicon supplementation for bone health is less well-established than calcium, vitamin D, or K2. Orthosilicic acid (the bioavailable form of silicon, sometimes sold as ch-OSA or stabilized orthosilicic acid) has been studied in small trials with promising results on collagen and bone markers. Doses used in studies range from 6–10mg daily. Silicon is generally well-tolerated and not associated with significant adverse effects at these doses.

For most people, dietary silicon from whole grains and vegetables is likely sufficient. Supplementation is a minor optional addition to an already comprehensive bone health regimen — not a priority over the foundational nutrients.

For a complete bone health approach, The Bone Density Solution covers the key elements for adults over 50.

Medical disclaimer: This article is for informational purposes only and is not medical advice. Consult your physician before changing supplements, medications or exercise routines, especially if you have been diagnosed with osteopenia or osteoporosis. See our full medical disclaimer.