[Nutritional problems in old age (author's transl)].

While age is increasing involutiones specific to age can be proofed at the gastrointestinal tract, which lead to a deceleration but quantitative unchanged adsorption. Wrong nutrition concerning to the take up of fat, carbohydrates, proteins and trace elements can be found in greater age very often. By watching a collective of healthy persons beyond the age of 90 years however it turns out that this group keeps a nearly faultless nutrition. The requirements of lysin, methionin and calcium is a little higher in old age than in younger. By intermitting starvation or addition of antioxidants life can be prolonged in experiments on animals, when this therapy starts already in younger age. Starvation in higher age, however, leads to a shortening of life in experiments on animals.