Abstract: A method for the radiation of corporeal blood is described with which it is possible to prevent arteriosclerosis related heart and vascular diseases due to disturbances in the fat exchange, or to successfully fight such diseases, without exposing the blood to photosensibilators or without the necessity of additional corporeal activity, or a special diet. The apparatus is easily transportable, indepedent from electrical supply lines and may, for example, be operated from the energy obtained from a car battery. A radiation spectrum is used, which employs optical radiation types, which are available on the surface of the earth in nature, so that damages to the organism in principle are prevented.