Apple seeds do contain some little toxic compound which produces Cyanide which is a lethal poison. Toxic compound in apple seeds is Amygdalin( also called as Laetrile). Poisoning from apple seeds includes dyspnea, coma, respiratory failure and in few cases on the spot death. Health benefits of Apples include improvement in brain health, controls diabetes, prevents cancers, maintains healthy heart, promotes weight loss and many such benefits.