Sarcopenia is defi ned as a loss of a muscle tissue progressing with age. It contributes to the deterioration of the muscle function, increasing the risk of falls, fractures, the severity of disability and dependence on others. On account of the increased number of elderly people, also in the demographic structure of the Polish society, sarcopenia requires attention. It is recognized that the prevalence of sarcopenia is underestimated. Neglecting this problem can be the reason for serious consequences, such as the muscle weakness or increase in the risk of falls and related complications. Also, for the entire health system it has signifi cant economic importance. Its early detection should be a priority in geriatric care. The article presents the genesis of the concept, clinical symptoms, complications, techniques useful in the evaluation of muscle mass and therapeutic methods.

Key words: sarcopenia, aged, geriatrics.