Diatomaceous Earth is basically fossilized algae. It is extremely rich is silica, which is very important for healthy bones. It aids in repairing broken bones and preventing osteoporosis. Taken internally, besides helping your bones, it kills parasites - most people don't even realize they have parasites until they start taking Diatomaceous Earth regularly. In addition to being great for your bones and removing parasites, it can also help you remove unwanted insects from yo