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Related Experiment Videos

Nutritional factors and immunological ageing.

Bruno Lesourd1

  • 1EA 2431, Faculté de Médecine, 28 Place Henri Dunant, 63001 Clermont-Ferrand and Hôpital Nord du CHU de Clermont-Ferrand, BP 36, 63118 Cébazat, France. blesourd@tiscali.fr

The Proceedings of the Nutrition Society
|August 23, 2006
PubMed
Summary

Undernutrition impacts immune function in the elderly. Nutritional interventions can improve immune responses and potentially extend lifespan, highlighting the importance of nutrition for healthy aging.

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Area of Science:

  • Gerontology
  • Immunology
  • Nutritional Science

Background:

  • Undernutrition significantly impacts immune responses, especially in the elderly.
  • Aging involves distinct stages: healthy, common (with micronutrient deficits), and pathological (protein-energy deficiency).

Purpose of the Study:

  • To review the relationship between nutrition and immune function in the elderly.
  • To describe immune changes across different stages of aging and nutritional status.

Main Methods:

  • Literature review focusing on undernutrition and immune responses in older adults.
  • Categorization of aging into three stages based on nutritional status and immune function.

Main Results:

  • Healthy aging shows T-cell subset changes but preserved function; function declines in the very elderly (>90).

Related Experiment Videos

  • Micronutrient deficits in common aging impair immunity, but supplements can correct this.
  • Immune responses are enhanced by supplementation even without deficits, showing high micronutrient sensitivity.
  • Pathological aging involves severe immune decline linked to protein-energy deficiency, leading to frailty.

    • Conclusions:

    • Nutritional status critically affects immune responses in the elderly.
    • Nutritional therapy is recommended for elderly individuals with nutrient deficits.
    • Supplementation may promote healthy aging and longevity, even in well-nourished elderly individuals.