More and more elderly patients are being admitted to the hospital. These elderly patients represent a significant proportion of intensive care unit (ICU) admissions. Older ICU patients have a high risk of death during their ICU admission and, if they do survive, a high risk of physical and cognitive decline. In addition, their remaining life expectancy is often limited. In short, elderly patients have less to gain from ICU treatment than young patients. It is therefore important to carefully consider the proportionality of ICU treatment. In this clinical lesson, we discuss aspects of the elderly ICU patient that should be taken into account when considering ICU treatment, in acute situations as well as in outpatient or GP settings.