Interleukin-2, its receptor and nutrition in older adults: a review

It is well recognized that malnutrition can impair immune function. Conversely, immune activity may influence measures of malnutrition, such as serum albumin and prealbumin. Interleukin-2 (lL-2) and its receptor are key components of immune function. Recent evidence has expanded our understanding of the interaction between nutrition and this cytokine system. particularly in older adults. (A cytokine is a protein that acts as a "hormone" regulator of the immune system.) This paper will summarize more recent findings regarding the relationship between nutrition and the IL-2/IL-2 receptor system.