Info from Tufts University Health & Nutrition Letter: Many are concerned that raw flaxseeds contain dangerous levels of cyanide, making it poisonous. We have nothing to be afraid of when it comes to raw flaxseeds. Small amounts of cyanide compounds can be found naturally in many foods, including cashews, almonds, some beans, and other plant products, as well as flax. It is more likely that you will ingest these compounds raw, as heat will break them down. However, even when eaten raw, the body has the capacity to break down a certain amount of these cyanide compounds. It was discovered in 1994 that in healthy individuals, daily consumption of around 8 tablespoons was safe. Those who have difficulty digesting high fiber foods and/or have a GI condition (colitis, Crohn’s, etc.) may need to avoid flaxseeds if the body finds it difficult to digest.