Ageing, Nutrition, and Infection: The Forgotten Triad
1Infectious Diseases Department, Morriston Hospital, Swansea, UK.
British Journal of Hospital Medicine (London, England : 2005)
|September 25, 2025
Summary
Malnutrition and infection create a vicious cycle in the elderly, impairing immune function. Nutritional interventions are crucial for improving health outcomes in ageing populations.
Area of Science:
- Gerontology
- Immunology
- Nutritional Science
Background:
- Ageing involves physiological declines in nutritional status and immune response.
- The ageing immune system exhibits quantitative and qualitative deficits, leading to reduced responsiveness and chronic low-level inflammation.
- Nutrition significantly modulates immune function in the elderly.
Purpose of the Study:
- To review the interplay between infection and malnutrition in the elderly.
- To highlight the impact of macronutrient and micronutrient deficiencies on immune dysfunction.
- To emphasize the need for nutritional research and modification in the elderly to improve health outcomes.
Main Methods:
- Literature review focusing on ageing, nutrition, and immunity.
- Analysis of the cycle of infection and malnutrition in older adults.
- Examination of nutrient deficiencies' role in immune system dysfunction.
Main Results:
- A prevalent vicious cycle of infection and malnutrition exists in the elderly population.
- Both macronutrient and micronutrient deficiencies contribute significantly to immune system dysfunction.
- Impaired immune responses are characteristic of the ageing process.
Conclusions:
- Addressing nutritional deficiencies is essential for enhancing immune function in the elderly.
- Nutritional interventions can mitigate the negative health impacts of ageing and improve healthcare outcomes.
- Further research into elderly nutrition is vital to support a growing ageing population.
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