Diatomaceous earth, food grade, is this really so good , or dangerous ? My doctor, and all the pharmacists I've talked to say, " DO NOT EAT Diatomaceous earth, you will harm yourself. " All the web says it cures artheritis, clogged arteries, high blood-pressure, high cholesteral, intestinal problems, and any parasites ( internal or external ). It is approved for animals, and is the anti-caking agent in flour, plus annihilating meal worms; therefore, we are already eating it." Food grade diatomaceous earth is EPA approved to be mixed with grains to control mealworms and other pests and has been exempted from tolerance requirements as an inert, inactive ingredient in chemical pesticides. Diatomaceous earth is EPA approved against indoor and outdoor crawling insects. Diatomaceous earth is USDA approved as an anti-caking agent for flour and animal feed. Diatomaceous earth is FDA approved for internal and external use and has a rating of Food Chemical Codex Grade. ", is the common web description, adding humans should consume a spoonful a day. IN REALITY, the stuff is dangerous to handle without gloves ( due to dehidration ), is dangerous to inhale when handling, and I suspect caused me to get a sore throat and diarrhea ( I did mix it with pleanty of water ). The question is, " WHAT COULD GO WRONG ? " ( side effects ) of ingesting diatoms. I do feel it helped my back-aches, but this could be a coincidence. Furthermore, I wonder if mixing Diatomaceous earth with nopalea cactus could be a wonder drug ? ... my doctor says " NO ! ".