Association "Paris Appeal", which unites European doctors and scientists, including Nobel Prize laureates, presented to Euro parliament results of investigations, explaining harmful influence of synthetic compounds, penetrating to blood from environment. Therefore, contamination of environment can provoke many serious illnesses, even cancer. In 75% of cases cancer tumors form because of toxic substances in environment. These compounds are actual poisons for human organism and can lead allergies and diseases. Only 25% of cancer illnesses are connected with smoking. Blood of every European contain more than 300 chemical compounds. There are traces of chemical compounds even in mother`s milk, in umbilical cord of a new-born - this is a sign that human embryo contacts with artificial substances before birth. The majority of compounds get to atmosphere through heating system, penetrating to respiratory tract afterward. We receive other compounds through food, subjected to various treatments by chemicals. Assimilation of harmful substances occurs through skin, which absorbs synthetic substances from make-up, clothes or shoes. Entering human organism once, these poisons stay forever.