The Fundamental Difference: Food-Grade vs. Filter-Grade
Before considering any internal use, it is critical to understand the stark difference between the two main types of diatomaceous earth. All internal consumption must be limited to food-grade diatomaceous earth, which contains a very low percentage (less than 2%) of crystalline silica and meets heavy metal content specifications. The other variety, filter-grade (or pool-grade) diatomaceous earth, is toxic and must never be ingested. The mechanical nature that makes food-grade DE effective for certain internal processes is entirely physical, unlike chemical pesticides.
Purported Internal Health Benefits
Many of the claims surrounding the internal use of food-grade diatomaceous earth are theoretical and largely based on anecdotal reports, not extensive human research. However, some studies and traditional uses highlight potential effects:
Detoxification and Cleansing
Proponents of DE often suggest it can act as a gentle intestinal cleanse, and some animal studies hint at its ability to remove heavy metals. The mechanism is attributed to the negatively charged, honeycomb-like cylindrical structure of the diatom fossils, which can theoretically attract and absorb positively charged particles like heavy metals, bacteria, and toxins. It is thought to then sweep these substances out of the body through the digestive tract. It's important to remember that your body has its own highly effective detoxification systems, and robust human research proving DE's detoxifying efficacy is lacking.
Digestive Support and Regularity
Due to its mildly abrasive and absorbent nature, some people use DE to support digestive regularity by helping to scour the intestinal walls. It may help address issues like bloating and gas by assisting with waste removal. Proper hydration is crucial when taking DE to prevent constipation, as its absorbent properties can have a drying effect on the digestive tract.
Support for Skin, Hair, and Nails
As diatomaceous earth is rich in silica, a mineral essential for connective tissues, it is often marketed to promote healthy skin, hair, and nails. Some research suggests that silicon intake is linked to bone and connective tissue health. However, it is not clear how much of the silica from diatomaceous earth the human body can actually absorb versus how much is simply excreted as waste.
Cholesterol Management
One small, uncontrolled human study from 1998 showed a decrease in total cholesterol and LDL ("bad") cholesterol after participants took DE for 8 weeks. While these results are promising, the study's lack of a control group means definitive conclusions cannot be drawn. More research is needed to confirm this effect.
Important Safety Precautions
Always Inhale With Caution
One of the most significant risks associated with diatomaceous earth is inhalation. While amorphous silica is relatively harmless when ingested, inhaling the fine dust can irritate the nasal passages and lungs. For individuals with existing respiratory issues, this can be particularly problematic. Chronic inhalation of crystalline silica can lead to serious conditions like silicosis. When handling DE, especially in large quantities, it is advisable to wear a dust mask.
Hydration Is Non-Negotiable
DE is highly absorbent and can lead to constipation if not enough water is consumed. To mitigate this, individuals taking DE should significantly increase their daily fluid intake. A good starting point is mixing the powder with plenty of water or juice to ensure it is well-hydrated before ingestion.
Guidance on Use
There is no established recommended daily allowance for silica from diatomaceous earth. For those who choose to take it, it is advisable to follow product label instructions or guidance from a healthcare professional. This approach helps the body adjust and can potentially reduce the likelihood of discomfort or symptoms.
What to Consider Before Taking DE
| Feature | Food-Grade Diatomaceous Earth | Filter-Grade Diatomaceous Earth |
|---|---|---|
| Source | Freshwater lake beds | Saltwater, ocean-based deposits |
| Safety for Ingestion | Generally considered safe by the FDA for human and animal use | Toxic, not safe for human or animal consumption |
| Silica Content | Contains a low percentage of crystalline silica (under 2%) | Contains a high percentage of crystalline silica (around 60%) |
| Primary Use | Dietary supplement, anticaking agent in feed, insecticide | Industrial water filtration (e.g., swimming pools) |
| Mechanism of Action | Mildly abrasive and highly absorbent | Provides a more effective filter medium due to high heat processing |
Conclusion: Limited Evidence, Maximum Caution
While proponents suggest numerous benefits for detoxification, digestion, and overall wellness from internal diatomaceous earth use, the scientific evidence to support these claims is currently limited and mostly anecdotal. The product's potential effects are based on its mechanical properties rather than any verified chemical action within the body. It is crucial to use only certified food-grade DE and to exercise maximum caution to avoid inhaling the fine powder. As with any dietary supplement, consulting a healthcare professional is recommended before adding diatomaceous earth to your wellness routine, particularly if you are pregnant, breastfeeding, or have pre-existing health conditions. For further authoritative information on its uses and safety, consider consulting sources like WebMD: https://www.webmd.com/diet/health-benefits-diatomaceous-earth.
