Feeding As already mentioned before, vampires feed on sources of life energy, such as blood or mental energy. The aforementioned psychic draining is rather a magical act than a physical one, therefore I will leave it out at this point, as I want to concentrate on physical feeding. It is said that the older a vampire gets, the better he has the ability to control his urges. It is also said that with the time passing, the blood comsume decreases. Yet I cannot speak for myself. But simply the fact THAT blood is consumed stands in contradiction to what is known about the normal human metabolism and body chemistry. Although in several cultures blood can appear as a part of specific meals in small amounts, it is accepted as a general statement that blood cannot be digested. For a normal body chemistry that is unable to split the specific molecules into consumable ones I mean. This seems to be different for vampires. But this is a topic for the offspring theory. The only thing that can be stated right here and now is that the metabolism of a vampire is able to use blood as a source of energy ad nourishment. On the other hand, most vampires I know including me state that their need to consume solid food has decreased. Obviously blood replaces a certain amount of the normal human diet. To which degree this replacement takes place seems to depend on the individual.