Psychic disorders nowadays are increasing parallelly with increasing of beef consumption. Autism and schizophrenia, Alzheimer, Parkinson, dementia are autoimmune deceases, connected with the sensitive bowel syndrome, that means that through gastrointestinal tract is imported a protein which is common to a human receptor in brain. The immune system recognizes it falsely as foreign and reacts to it, genes which are responsible for autoimmune inflammation of brain are proliferated, and that causes psychic disorder. Jacobs-Kreuzfeld disease is a parallel disease in humans and bovines. This proves that the prion receptor in humans and cows is common. That means the reaction to the bovine prion receptor causes production of antibodies which react falsely with the human prion receptor. Thus psychic disorders are caused not only by the prion (by Jacobs-Kreuzfeld disease) but also through the immune reaction of the human organism against the nerve prion receptor in beef and the false re