Apple seeds are poisonous! (According to Robert H. Shmerling, M.D. of the Beth Israel Deaconess Medical Center, under certain unusual circumstances, cyanide poisoning can follow the ingestion of seeds or pits of several common fruits that are members of the Prunus species, including, apricots, cherries, almonds, peaches, and apples. All of these seeds and pits contain amygdalin. You may have heard of amygdalin as a component of Laetrile, an "alternative" cancer treatment, of no proven value, that may be associated with cyanide poisoning. This harmless chemical lies inside the seed, but when the seed is moistened and crushed, it can be converted by bacteria in the intestinal tract or by an enzyme within the seed into cyanide. Because the amount of amygdalin in an apple seed is quite small, it is highly unlikely that you would become ill from swallowing one or two seeds, especially if they were not chewed. Note to self - stop drinking Scrumpy!)