Silica
Found in :
Special Precautions of Silica
None known, but not yet thoroughly tested to be be fully known. It is thought though, that silicon dioxide (silica) supplements are more toxic at lower levels than those from the herb horsetail, which can generally be safely taken at higher levels, but neither supplements should be taken at excessively high levels for long periods as they can cause toxicity symptoms. The type and severity of toxicity symptoms depends on the individual's tolerance levels. Long-term use or very high doses of horsetail (or silica) supplements have caused irreversible kidney damage, especially in people with existing kidney or heart disease. People with eodema (fluid retention) should also not take silica (or horsetail) supplements. Women who are pregnant or breastfeeding and children should not take any silica (or horsetail) supplements due to the possible adverse effects and only obtain their silica from food, as the safety of excessive levels of silica has not been tested thoroughly and caution is advised. Inhaled silica dust can cause silicosis, which is a lung condition that causes fibrosis and cancer of the lungs. Studies show that diatomaceous earth industry workers who were exposed to crystalline silica during the course of the excavation and mining of diatomaceous earth have a higher than expected rate of death from cancers related to silica exposure and inhalation. There is a lot of conflicting information about this mineral, so people who want to take a silica (or horsetail) supplement should always exercise caution. Seek advice from a doctor before trying any silica (or horsetail) supplements.
