Silica, specifically the crystalline form known as quartz, can be harmful when inhaled in significant quantities, as it can lead to respiratory diseases such as silicosis, chronic obstructive pulmonary disease (COPD), and lung cancer. However, amorphous silica, which is commonly found in products like food additives and cosmetics, is generally considered safe for use.
In summary:
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Crystalline Silica: Inhalation of fine particles can be dangerous and linked to serious lung conditions.
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Amorphous Silica: Typically safe for consumption and use in various products, but moderation is key.
Always follow safety guidelines and consult health professionals if you're unsure about exposure to silica in any form.