The nutritional status of the elderly

Area of Science:

• Gerontology
• Nutritional Science
• Public Health

Background:

• Aging is associated with physiological changes that can impact nutritional status.
• Community-based studies are crucial for understanding nutritional trends in diverse elderly populations.
• Previous research indicates potential declines in certain nutritional markers with advancing age.

Purpose of the Study:

• To assess the nutritional status of over 1500 elderly individuals across three community surveys.
• To identify age-related changes in anthropometric measurements and biochemical markers.
• To investigate the influence of social factors, such as eating alone, on nutritional status.

Main Methods:

• Cross-sectional community surveys involving over 1500 elderly subjects.
• Collection of anthropometric data: weight, arm circumference, skinfold thickness, and Quetelet's index.
• Biochemical assessments including hemoglobin, plasma protein, albumin, vitamin C, and thiamine levels.

Main Results:

• A decline in weight, arm circumference, skinfold thickness, and Quetelet's index was observed with advancing age.
• Hemoglobin levels decreased with age in one survey area, potentially linked to nutritional variations.
• Plasma protein and albumin concentrations did not decline with age.
• Men eating alone showed poorer vitamin C and thiamine status compared to those sharing meals; women eating alone had higher leucocyte ascorbic acid levels.

Conclusions:

• While some anthropometric measures decline with age in the elderly, key indicators like plasma proteins remain stable.
• Nutritional status, particularly for certain vitamins, can be influenced by social factors like eating arrangements.
• Community-level nutritional assessments are vital for identifying specific health needs in aging populations.