Anemia in the elderly: current understanding and emerging concepts.

Area of Science:

• Gerontology
• Hematology
• Internal Medicine

Background:

• Anemia is defined by the World Health Organization (WHO) using hemoglobin (Hb) levels: <13 g/dL for men and <12 g/dL for women.
• Prevalence is high in the elderly, affecting up to 25% of community-dwelling octogenarians and 50% of chronically ill older adults.
• Even mild anemia or low-normal Hb levels in the elderly are associated with adverse health events.

Purpose of the Study:

• To review the associations between anemia and adverse outcomes in the elderly.
• To explore the potential role of aging-related inflammatory processes, such as interleukin-6 (IL-6), in anemia development.
• To discuss the complications and quality of life implications of anemia in older individuals.

Main Methods:

• Literature review of studies on anemia in the elderly.
• Analysis of the relationship between aging, inflammation, and hematopoiesis.
• Examination of the impact of anemia on mortality, cardiovascular disease, cognitive function, hospitalization, bone density, falls, and quality of life.

Main Results:

• Anemia in older adults is linked to increased mortality, cardiovascular disease, cognitive dysfunction, longer hospitalizations, reduced bone density, and falls.
• Aging is associated with dysregulation of pro-inflammatory cytokines like IL-6, potentially impairing erythropoiesis.
• Common causes include iron deficiency, chronic inflammation, chronic kidney disease, or remain unexplained.

Conclusions:

• Anemia is a significant comorbidity in the elderly, associated with numerous adverse outcomes and reduced quality of life.
• Further research should investigate age-related physiological changes and the efficacy of anemia correction in mitigating risks and improving QOL.