Some foods are dangerous for human body. Among them were the usual potatoes and fish. Scientists tried to explain their position from a scientific point of view.
Not all potatoes are equally useful or harmful. In leaves and sprouts of potatoes during long exposure to the sun hazardous poisons. When long storage and they accumulate in the tubers that people eat. A one-time use of this product does not cause changes, but the constant ingestion of potato with abnormal conditions of storage can lead to diseases of the gastrointestinal tract.
The situation is similar with fish. In some samples of tuna, the scientists found traces of mercury. Mercury does not evaporate after the heat treatment and tends to accumulate in the body.
More harmful unfiltered honey, if you eat it in large quantities. Doctors do not recommend eating the seeds of apples, peaches, cherries, they contain hydrogen cyanide. In large quantities this substance damages the heart.