Abstract
Plant polyphenols are natural substances present in foods of plant origin. They are the subject of worldwide growing interest in human nutrition researchers.
The fundamental new knowledge it follow that this research complement or change the image of the metabolic pathways of these substances in the human body, but still do not allow them to reliably detect their biological effects that would explain their predicted relationship to non-infectious chronic diseases. On the other side, the indisputable conclusion of research, especially epidemiological studies, is the confirmation that healthy nutrition and healthy food should include regular and sufficient intake of suitable types of polyphenols.
Because polyphenols average total intake for the Czech population is small, it is desirable to stimulate interest in food rich in the most biologically effective subgroups of plant polyphenols, or offer them in food supplements for all population groups, especially vulnerable group.