EN
This paper presents the properties of selected plant food products and plant feed varieties containing specific ingredients (that are sources of functional food), as well as the biological activity of these products and feeds in humans and animals. The concept of functional food and feed is defined, and the role of these substances in nutrition is described. The paper also discusses the role of selected vegetables, fruits, and condiments in the inhibition of many diseases, including degenerative ones, associated with the ageing process, such atherosclerosis, dementia, hypercholesteremia, and physical infirmity.