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Effects of age on nutrient requirements
1Geriatric Research, Education and Clinical Center, John L. McClellan Memorial Veterans Hospital, Little Rock, Arkansas, USA.
Clinics in Geriatric Medicine
|November 1, 1995
Summary
Nutrient needs in older adults vary, with energy requirements decreasing but protein needs potentially increasing. Chronic conditions may affect vitamin absorption, and fluid intake is crucial for preventing dehydration in the elderly.
Area of Science:
- Gerontology
- Human Nutrition
- Dietary Science
Background:
- Aging presents unique physiological changes impacting nutritional needs.
- Individual variability in aging complicates precise nutrient requirement quantification for older adults.
Purpose of the Study:
- To summarize current understanding of age-related changes in nutrient requirements.
- To identify specific nutrients where needs may change with advancing age.
Main Methods:
- Review of longitudinal studies examining aging and nutrient intake.
- Analysis of factors influencing nutrient absorption and metabolism in older populations.
Main Results:
- Energy requirements generally decrease with age.
- Protein requirements per kilogram of body weight may increase.
- Vitamin needs can be affected by chronic conditions and altered absorption.
- Mineral requirements show little evidence of change unrelated to chronic conditions.
- Adequate fluid intake is essential for preventing dehydration in elderly individuals.
Conclusions:
- Nutrient requirements for older adults are not uniformly reduced with age.
- Personalized nutritional strategies are necessary, considering individual health status and chronic conditions.
- Focus on adequate protein, specific vitamins, and sufficient fluid intake is vital for healthy aging.