Who this is for
Anyone managing aluminum burden, anyone whose OligoScan shows low silicon alongside elevated aluminum, and anyone who's noticed that most heavy metal chelation advice doesn't seem to apply well to aluminum specifically.
Why aluminum needs a different approach
Most heavy metals respond, at least partially, to standard chelating agents. Aluminum largely doesn't. It isn't easily bound by DMSA, DMPS, or EDTA the way lead or mercury can be, which is why aggressive chelation isn't typically the primary strategy here. The more realistic, better-supported approach is gradual: reduce ongoing exposure, and support the specific chemistry that does bind aluminum effectively, which is silicon.
The actual chemistry: hydroxyaluminosilicate
Silicon, in the form of orthosilicic acid, reacts with aluminum in the blood to form a compound called hydroxyaluminosilicate. This isn't a supplement marketing term. It's real inorganic chemistry, and the reason it matters clinically is specific: the compound needs to be stable long enough to survive being filtered by the kidney, so that the aluminum it's carrying ends up in urine instead of being reabsorbed. Silicon-rich water works by keeping blood silicic acid concentration high enough for that stability to hold.
What the clinical research actually shows
This has been tested directly, more than once, by a research group at Keele University led by Professor Christopher Exley, who spent decades studying the relationship between silicon and aluminum in the body.
In people with Alzheimer's disease: a 12-week trial had participants drink about a liter of silicon-rich mineral water daily. Urinary aluminum excretion increased significantly over the study period. Alongside that reduction in aluminum burden, 8 of 15 participants showed no further cognitive decline during the study, and 3 showed measurable improvement.
In people with secondary progressive multiple sclerosis (a population known to excrete unusually high amounts of aluminum), the same 12-week protocol with silicon-rich water more than doubled baseline urinary aluminum excretion in both men and women.
In healthy adults, a registered clinical trial testing several silicon-based supplement forms found increased urinary aluminum excretion within the first week of use compared to baseline.
One more detail worth knowing: in the 12-week trial, the increase in aluminum excretion happened without a corresponding drop in iron or copper, meaning it doesn't appear to indiscriminately strip other essential minerals along with it.
What counts as "silicon-rich"
Per Exley's own research criteria, a mineral water needs a silicon (often labeled "silica" or, on some German or Austrian brands, "meta-silicate") content of at least 30 mg/L to be considered silicon-rich enough for this effect. Brands like Volvic and Fiji are naturally high enough to qualify; check the label rather than assuming.
Horsetail (Equisetum arvense) is the traditional herbal source, with up to 25% of its dry weight as silica, delivered through a long, well-strained infusion. If wild-harvesting it, choose plants well away from roadsides and industrial land, since horsetail readily absorbs whatever is in its soil.
Diatomaceous earth is a different tool for a different job. It works mechanically in the gut and is useful for parasite support, but it's poorly absorbed and shouldn't be relied on to restore systemic silicon levels the way silica-rich water or stabilized orthosilicic acid can.
Why silicon runs low in the first place
Chronic aluminum exposure is one of the most common drivers of low silicon: the body continually uses silicon to bind and neutralize aluminum, which means ongoing exposure diverts silicon away from its other jobs, like collagen formation, bone matrix structure, and connective tissue repair. Common signs of low silicon include front-to-back ridging on the nails, brittle hair and nails, reduced skin elasticity, and slow wound healing, alongside the elevated-aluminum pattern itself on an OligoScan.
What this article does not tell you
- This is supportive, not a fast fix. Aluminum accumulates over years, and reducing it responds better to gradual, consistent support than to an aggressive short-term protocol.
- The clinical trials involved small groups, particularly the Alzheimer's study. They're genuine, published, peer-reviewed findings, not massive population-level proof, and more research continues in this area.
- This doesn't replace medical care for a diagnosed neurological or autoimmune condition. The research connecting aluminum to conditions like Alzheimer's and MS describes an association under active investigation, not a settled cause-and-effect explanation for either disease.
Go deeper
For the full detox pathway picture, including how silicon fits alongside liver, kidney, and lymphatic support, see the detox hub.
See the full Heavy Metals & Detox guide →
References and further reading
- Davenward S, Bentham P, Wright J, et al. Silicon-rich mineral water as a non-invasive test of the 'aluminium hypothesis' in Alzheimer's disease. J Alzheimers Dis. 2013;33(2):423-430.
- Jones K, Linhart C, Hawkins C, Exley C. Urinary excretion of aluminium and silicon in secondary progressive multiple sclerosis. Mult Scler Relat Disord. 2017;18:191-193.
- Exley C, Korchazhkina O, Job D, et al. Non-invasive therapy to reduce the body burden of aluminium in Alzheimer's disease. J Alzheimers Dis. 2006.
- Effect of Three Silicon-Based Food Supplements on Urinary Excretion of Aluminum (SILIAL). ClinicalTrials.gov, NCT05116982.
- Crouse DN. Silica Water: The Secret of Healthy Blue Zone Longevity in the Aluminum Age. 2018.
- VIGEO Health Medical Disclaimer
Questions and Answers
Q: How does orthosilicic acid remove aluminum from the body? A: It reacts with aluminum in the blood to form hydroxyaluminosilicate, a compound stable enough to survive kidney filtration, allowing the aluminum to be excreted in urine rather than reabsorbed.
Q: Is this backed by real research, or just theory? A: It's been tested in published clinical trials, including 12-week studies in people with Alzheimer's disease and secondary progressive multiple sclerosis, both showing measurably increased urinary aluminum excretion after drinking silicon-rich mineral water.
Q: What's the difference between silica-rich water and diatomaceous earth? A: Silica-rich water and stabilized orthosilicic acid are well absorbed and effective for systemic silicon repletion and aluminum binding. Diatomaceous earth works mechanically in the gut, mainly for parasite support, and is poorly absorbed for restoring silicon levels.
Q: How much silicon does water need to have an effect? A: Research criteria point to at least 30 mg/L of silicon (labeled as silica or meta-silicate on some bottles) for a water to be considered silicon-rich enough to meaningfully affect aluminum excretion.