Diatomaceous Earth
herbs
Diatomaceous earth is a naturally occurring silica-rich powder derived from fossilised diatoms, commonly used as a dietary supplement despite limited clinical evidence. Most health claims lack robust scientific support, though it contains trace minerals and has been traditionally used for various wellness purposes.
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Benefits
Dosage
Typical Dose
1-2 teaspoons (5-10 grams) daily
Upper Limit
3 teaspoons (15 grams) daily
Timing
With meals to minimise gastrointestinal irritation
Forms & Bioavailability
Food-grade powder
Low to moderate; silica bioavailability varies and is poorly absorbed
Capsules
Low to moderate; similar absorption concerns as powder
Side Effects
Interactions
Research Summary
Clinical evidence supporting diatomaceous earth supplementation remains sparse and inconclusive. Most traditional uses lack robust peer-reviewed studies in humans, with most research limited to in vitro or animal models. The bioavailability and efficacy of dietary silica from diatomaceous earth specifically is poorly characterised compared to other silica sources.
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The Bottom Line on Diatomaceous Earth
Diatomaceous Earth is emerging in research with limited but interesting evidence.It is most commonly used for may support connective tissue and collagen formation via silica content and traditionally used to support joint and bone health. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Diatomaceous Earth
See how Diatomaceous Earth can help with specific health goals: